Tag:hydraulic design

№10|2020

SURFACE RUNOFF TREATMENT

DOI 000000

UDC 628.22

Vereshchagina Lidiia, Gromov Grigorii, Ten A. E., Khudiakova Dar’ia

Analysis of foreign and domestic approaches to the hydraulic calculation of gravity storm sewer networks

Summary

In accordance with the requirements approved by the Decree of the RF Government of September 5, 2013 No. 782 «On the development of water supply and wastewater disposal schemes» (as amended on May 22, 2020), projects of the developed water supply and wastewater disposal schemes for settlements and urban districts of the Russian Federation with a population of 150 thousand people and more must include an electronic model. At the same time, the software used for the electronic model must ensure the performance of hydraulic calculations, including rainwater (storm) sewer networks operating in gravity and pressure modes. Analysis of literature data and official websites of software manufacturers show that at present in Russia no domestic software for calculating gravity storm sewer networks that meet the requirements of the current regulatory document – SP 32.13330.2018 «SNiP 2.04.03-85. Sewerage. External networks and structures» that regulates the design of wastewater systems for settlements, urban districts is available. Foreign companies working in the Russian market have certain experience in this area. In this regard, the possibilities of software products of various companies have been studied that provide for the electronic models allowing to perform hydraulic calculations and design gravity systems for the surface runoff disposal. The authors have analyzed European regulatory documents, including BS EN 752: 2017, and also performed verification calculations in terms of determining the flow rates of surface (rain) runoff. The results show that the use or adaptation of foreign software products to the design environment in Russia is not possible because of their inconsistency with the applied design dependencies and the requirements of the current regulatory documents of the Russian Federation.

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№9|2016

PIPELINE SYSTEMS

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UDC 628.144:532.542:691.175

Averkeyev I. A., Gimazieva D. R.

Analysis of methods of hydraulic calculation of pressure pipelines  made of polymer materials

Summary

The analysis of the most pressing for today methods of hydraulic calculations used in domestic design of pressure pipeline systems made of polymer materials was carried out. The methods of hydraulic calculation of pressure pipes were considered on the basis of: pipe friction number formula for hydraulically smooth pipes suggested by F. A. Shevelev; Kolbruk formula (widely used overseas); formula suggested by A. Ia. Dobromyslov. The analysis of the methods was carried out in relation to the applicability and validity of the results of the hydraulic calculations of pressure pipelines. The aim of the analysis was to assist the designer in choosing the most comfortable method of hydraulic calculations of pressure pipes made of polymer materials.

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№1|2022

DESIGNING WASTEWATER SYSTEMS

DOI 10.35776/VST.2022.01.07
UDC 628.24

Ten A. E.

Analysis of methods for hydraulic calculation of surface runoff disposal systems

Summary

In the context of the improvement of advanced domestic and international technologies, materials and treatment equipment used to protect the environment from anthropogenic pollution, designing new systems for the removal and treatment of surface runoff and methods for their calculation that involve the latest achievements of the sectoral science and technology and optimization of the algorithm for performing operations and practical techniques for their hydraulic calculation, is of special actuality. Currently, domestic and international companies have entered the Russian market offering innovative designs of surface runoff disposal systems that have a wide range of applications owing to their design, operational features and the ability to withstand heavy loads. An example of such an innovative design of an open surface runoff disposal systems is ASO Qmax system. The analysis of international and domestic approaches to the hydraulic calculation of surface runoff disposal systems, of the possibility of their adaptation to the Russian conditions is presented.

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№9|2021

AUTOMATED AND INFORMATION MANAGEMENT SYSTEMS

DOI 10.35776/VST.2021.09.08
UDC 628.179.36:004.415.53

Egorova Yu. A., Konevskii E. V., Vas'kovskii A. V., Zaiko V. A.

Implementation of electronic models of water supply
and wastewater disposal systems

Summary

Since 2013, «Samarskie Kommunal’nye Sistemy», LLC, within the framework of the implementation and development of electronic models of water supply and wastewater disposal systems, acquired the software, arranged the process of certification and updating of water distribution and sewer networks, tested various methods of detecting latent water losses in the water distribution networks using the results of hydraulic modeling, assessed various promising measures for the development of the water supply and distribution system and wastewater disposal, developed an algorithm for the interaction of various software products and employees working with them, carried out measures on meeting the requirements for the protection of information related to the National Security Information, developed measures to maintain previously achieved results in eliminating water losses. Currently, full-scale detailed hydraulic models of the water supply and wastewater disposal systems are being developed, a mechanism is being tested for transferring data from the sales department on the volumes of provided services directly to the hydraulic model.

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№2|2021

SEWERAGE NETWORKS

DOI 10.35776/VST.2021.02.05
УДК 628.24

Gromov Grigorii, Ten A. E., Dzhumagulova N. T., Brianskaia Iuliia

Hydraulic characteristics and calculation of the innovative systems of surface runoff disposal

Summary

In the context of the intensive development of new domestic and foreign technologies, materials and equipment used to protect the environment from anthropogenic pollution, the development of advanced systems for surface runoff removal and treatment is of special actuality. These systems provide for using the latest achievements of the sectoral science and optimizing the algorithm for performing operations and practical methods for the hydraulic calculations. An example of the innovative surface runoff disposal system is ASO Qmax, that refers to an open system of channels for the collection and disposal of surface runoff formed during precipitation. However, the widespread use of these facilities in Russia is hampered by the lack of a method for the hydraulic calculations, including tables for the selection of cross-sections (diameters) of channels that meet the requirements of the Russian guidelines and regulations for the design of surface runoff disposal systems. In this regard, the subject of this paper is the estimation of the hydraulic characteristics of pipelines, channels of ASO Qmax drainage system. The results of theoretical and experimental studies of the hydraulic characteristics of ASO Qmax system with account of the adaptation for the Russian conditions and regulatory requirements, as well as the justification of the recommended parameters for their use are presented.

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№11|2016

PIPELINE SYSTEMS

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UDC 532.542.9

Boldyrev Vladimir Vasil'evich

Hydraulic calculations of a water curtain as a pipeline with cocurrent flow

Summary

The need for water curtains arises at over load of any toxic and explosive liquids and gases; and with account for the continuous growth of overload amounts owing to the construction of new terminals it is necessary to design water curtains more and more often. The ana­lysis of hydraulic calculations of a water curtain in a distribution pipeline is presented. When calculating through nozzles the expediency of using the widely known flow rate coefficient instead of an unknown departmental coefficient is shown. At present formulas for calculating the total flow through the water curtain nozzles and head loss in a distribution pipeline are lacking. The method of calcula­ting such a pipeline (pipeline with concurrent flow) is known from the hydraulics. However, it cannot be used because it is suitable for the constant specific flow rate, and the specific flow rate of the water curtain is not constant. The task of making hydraulic calculations of a water curtain for a distribution pipeline has been formulated as follows: determining such pressure and flow rate values that provide for the set flow and pressure for the last (most remote) nozzle is required. When determining head losses in a distribution pipeline the flow rate value before the pipeline multiplied by the decreasing coefficient is used. It was stated that this coefficient depended on the ratio of the diameter of the distribution pipeline to the nozzle diameter. The diagram and formula describing the above-noted dependency are presented together with an example of the calculations illustrating the use of the obtained dependencies.

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№10|2019

FIREFIGHTING WATER SUPPLY

DOI 10.35776/MNP.2019.10.04
УДК 614.844

Yepifanov S. P., Zorkaltsev V. I., Baranchikova N. I., Korel’stein L. B.

Hydraulic calculation of automatic firefighting systems
combined with internal fire water pipeline system

Summary

In recent decades the construction of large buildings has risen sharply: shopping and entertainment centers, multifunctional high-rise buildings for residential and public purposes with underground parking lots, storage facilities for the storage of combustible materials. During construction finishing materials are often used that emit toxic substances if ignition occurs. Fires can result in fatalities and substantial material losses. For the fire safety of buildings and structures the use of firefighting water supply – both outdoor and internal is most effective. Due to the inability to provide for outdoor firefighting of a large part of the premises of the upper floors of high-rise buildings, the effectiveness and reliability of internal firefighting systems is of particular importance. Water consumption for fire water supply can be 200 l/s or more. To supply water in such a volume to the fire points, effective internal fire water supply systems are required: automatic firefighting systems (sprinkler and deluge), internal fire water pipelines, deluge water curtains. Combined internal firefighting systems include automatic firefighting installations and internal firefighting water pipeline. The method of hydraulic calculation of each of these systems is available in the regulatory and specialized literature. However, in the process of hydraulic calculations of combined (integrated) firefighting water supply systems, their essential features should be taken into account. In this regard, a mathematical model of flow distribution in automatic firefighting systems combined with an internal fire water pipeline system is considered. The technique of hydraulic calculation of arbitrary combined firefighting water supply systems is given. The proposed model allows you to get an actual value of water abstraction through nozzles (sprayers) and hand control branch pipes.

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№9|2018

WATER DISTRIBUTION NETWORKS

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UDC 628.14:004.415.53

Primin Oleg, Gromov Grigorii, Stepanov D. L., Kozlova O. V.

Calibration of an electronic model of a water supply system
(through the example of the water distribution network of Salavat city)

Summary

In accordance with the RF legislation within the frames of the water supply schemes development for the Russian cities designing an electronic model of a water supply system is envisaged. In order to obtain trustworthy results of modeling the model verification is required that is carried out by the calibration on the basis of operation and statistic data of the water supply system. The action of the electronic model calibration through the example of the Salavat water distribution network is described (Republic of Bashkortostan). The calibration was aiming at maintaining hydraulic head at the nodal points of the design model according to the assumed calculation as well as maintaining water source flows according to the assumed estimation hour. The calibration of the electronic model of the water supply system was carried out by varying the maximum values of steel and cast iron pipeline roughness that corresponded to their maximum working lifespan. The calibration process involved a considerable amount of hydraulic calculations (256). The mean total difference of hydraulic head between the estimated values and actual measurements was 4.03%; the mean total difference of water source flows – 0.31%. With the purpose of the calibration process automation an algorithm based on VBA language with the use of Excel tables and ActiveX library of «ZuLuNetTools» was developed. The developed algorithm of automated calibration of the electronic model is applicable to «ZuLu» Russian software.

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№8|2019

ОЧИСТКА ПОВЕРХНОСТНОГО СТОКА

DOI 10.35776/MNP.2019.08.06

UDC 628.22

Vereshchagina Lidiia, Ten A. E., Gromov Grigorii, Khudiakova Dar’ia

Method of hydraulic calculation of the innovative designs
of surface runoff disposal

Summary

The method of hydraulic calculation of open canals of the surface runoff drainage system ACO Qmax is presented. The canals are designed to collect and drain surface (rain, snowmelt and street flush water) runoff from urban areas of various functional purposes: parking lots, warehouse complexes, shopping centers, transport terminals, highways, service area facilities, industrial areas with heavy traffic, marine and river terminals, airfields, sports facilities, local park and other areas where the use of open drainage systems is allowed. The method was developed by the experts of MosvodokanalNIIproject JSC taking into account the legislative, regulatory and procedural documents of the Russian Federation governing the design of systems for the removal and treatment of surface runoff from the territory of settlements. The method is based on the results of experimental studies on determining the hydraulic characteristics of canals of the ACO Qmax drainage system that are a sort of open systems and are widely used in the EU countries for land improvements.

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№4|2013

ADVANCED TECHNOLOGIES AND EQUIPMENT

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UDC 696.117.001.24

Svintsov A. P., MUKARZEL S. A., Shchesnyak L. E.

The method of designing a tap head for water supply fittings

Summary

The method of hydraulic designing a tap head for water supply fittings with a flat locking couple with a passageway made in the form of a curved drop is presented. The developed design is characterized with a high regulating capacity that provides for changing the water flow proportional to the turn of the tap handle. With this wastage of water is decreased.

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№8|2013

WATER DISTRIBUTION NETWORKS

bbk 696.115.005

UDC

Zotova I. Yu., Zotov Yu. N., Strelkov A. K.

Methodic procedures of hydraulic designing plumbing systems in tenement buildings

Summary

Changes in the current water and wastewater regulatory legislation establishing unambiguous requirements to the development of methodic procedures are considered. The guidelines on creating methodic procedures that being implemented will ensure the legitimacy of the methods are given. It is shown that using utility facilities of the entire apartment as a primary element and introducing two new concepts, i. e. master service connection and maximum momentary flow, allowed developing advanced methods of determining design flows and required water head for the master service connection.

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№7|2010

PROBLEMS, PERSPECTIVES

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UDC 628.22:532.542

Chupin V. R., Melekhov E. S., Chupin R. V.

Pressure Movement of Flows in Gravity Manifolds

Summary

A new approach to the design of water disposal systems based on their simulation with hydraulic chains with unrecorded withdrawals and inflows of runoffs is offered. It makes it possible, on one hand, to determine the presence of counterflows in the network, possible effusions of flows on the ground surface, volumes of runoffs running out, carrying capacity of a water disposal system and, on the other hand, to simulate various conditions of flow transportation with due regard for possible cloggings, encrustation of pipes and other violations which can occur during the operation.

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№12|2022

DISCUSSING REGULATORY DOCUMENTS

DOI 10.35776/VST.2022.12.02
UDC 696.11:006.3

Strelkov A. K., Zotov Yu. N., Mikhailova I. I.

Regulatory requirements and their practical implementation in the process of calculating water supply systems for apartment buildings

Summary

The article is devoted to the analysis of the amendments to the requirements in legal documents and their practical implementation in the codes of practice in relation to the hydraulic calculation of the inhouse water supply systems of apartment buildings. An overview of the main amendments to the legal documents regarding the functional affiliation of inhouse water supply systems and their maintenance in apartment buildings is given. There is a functional-targeted insufficiency of the methodology and the lack in the current federal-level regulatory and technical documents of the methods for hydraulic calculation of water supply systems for apartment buildings that provide for their design characteristics complying with the mandatory requirements of the federal laws «On Technical Regulation», «Urban Development Code of the Russian Federation» and «Technical Regulations on Safety of Buildings and Structures». Technological approaches are considered in the regulation of water consumption in the water supply systems of apartment buildings. Recommendations are presented on the development of methodological procedures, that being applied will ensure the legal legitimacy of the methods for hydraulic calculation of centralized cold and hot water supply systems in apartment buildings.

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№12|2015

WATER DISTRIBUTION NETWORKS

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UDC 628.1

GALPERIN E. M.

On hydraulic calculations of a loop water distribution network
(to be discussed)

Summary

During the operation a loop water distribution network is subject to both disturbing impact and control activities. Disturbing impact aims at changing the state of the network. At that the operating personnel try to maintain the network in 100% working conditions at minimum costs by the control activities. Disturbing impact is caused by water consumption alterations and pipeline failures that arise stochastically. In the process of hydraulic designing water consumption variations are simulated with so called specific modes chosen at the most crucial moments of the water network operation. Hydraulic calculations of the specific modes are carried out provided the network is in complete function. The model of a loop water distribution network operation does not take into account the disturbing impact of failures. The construction rules and regulations determine only the level of the network operation in case of a single section cutoff. For simulating the process of failure occurrence and elimination the use of the mathematical tools of a queue system is suggested. The calculations show that at the existing water network failure rate and repair time the loop water distribution network is in non-operating condition at least for three and more weeks over a year. The procedure of hydraulic calculation of a loop water distribution network with account of occurring failures and repair time is suggested.

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№3|2020

LAWS, STANDARDS, REGULATIONS

DOI 10.35776/MNP.2020.03.05
UDC 696.11

Strelkov A. K., Zotov Yu. N., Mikhailova I. I.

On improving Code of Rules (CR) 30.13330.2016 «Water supply and drains of buildings. Revised edition of SNiP 2.04.01-85*» (for the discussion)

Summary

The article is explaining the amendments to Code of Rules (CR) 30.13330.2016 «Water supply and drains of buildings. Revised edition of SNiP 2.04.01-85*». The results of the analysis of the interconnections of the system of technical regulation in construction business and the system of regulating the provision of public services are presented. In order to create a legitimate methodological toolkit, the experts of the Academy of Civil Engineering and Architecture, Samara State Technical University developed amendments to CR 30.13330.2016 that will clarify the content of the regulatory document and specify certain elements of the design and calculation of the internal water supply systems of an apartment building. The methodology of designing drinking water supply systems for apartment buildings is considered. Methodological procedures and their practical implementation in the design of internal drinking water supply systems of an apartment building are given.

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№12|2019

PIPELINE SYSTEMS

DOI 10.35776/MNP.2019.12.05

UDC 628.144:532.542

Averkeyev I. A.

On special features of determining the coefficient
of equivalent polymer pipe roughness
(to be discussed)

Summary

The criteria of estimating the condition of the inner surface of water and wastewater pipelines are considered and appraised. In particular, the feasibility of using equivalent roughness Кэ coefficient as such a criterion is substantiated. Two main methods of determining Кэ parameter are presented and described: with the help of hydraulic experiments with subsequent processing of the results by Prandtl and Colebrook–White equations; direct measurement by a proficorder of the arithmetic mean deviation of the profile of the inner surface of the pipe from the midline Ra with the subsequent conversion to Кэ using the empirical dependence obtained by A. Ia. Dobromyslov. An assessment of the reliability of the results obtained by these methods is given. The feasibility of developing a standard regulating the procedure of determining the parameter Кэ and the mandatory in-process monitoring of it are considered.

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№11|2017

DESIGNING WATER AND WASTEWATER SYSTEMS

 

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UDC 65.012.45:628.1/.2

Chupin V. R., Chupin R. V., Alekseev A. V., Novitskii N. N.

Prospective development scheme of the water supply
and wastewater disposal systems in the city of Irkutsk
and Irkutsk Area

Summary

According to the national legislation all the communities in Russia shall have prospective development schemes of the water supply and wastewater disposal systems. In the process of developing the schemes the electronic models and software for the assessment of the options of the development and decision making related to their implementation shall be used. Using the example of developing the scheme of the water supply and wastewater disposal systems in the city of Irkutsk and Irkutsk Area the efficiency of using «ANGARA» information computer complex that have been used for several years in the operating activities of Irkutsk «Vodokanal» MUE is shown. The main tool used in the scheme development was the electronic model of the pipeline system – the data base and software complex. The data bases contain the information on the site plans, schemes and parameters of the network elements and structures required for hydraulic calculations. The use of this complex provided for developing within fairly short time a radically new scheme of the water supply and wastewater disposal systems of the city of Irkutsk and Irkutsk Area for the period until 2025. The scheme provides for connecting 28 communities of the Irkutsk Area to the public water supply and wastewater disposal systems of Irkutsk.

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№2|2011

WATER SUPPLY

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UDC 628.142.001.24

Belyaev N. N., Sukacheva I. N., Radetsky M. Yu.

Practice of Сarrying out Hydraulic Calculations on the Example of Water Supply System of the Right-Bank Part of Novosibirsk

Summary

One of the most important problems confronting the heads of water supply-sewerage services enterprises, – the reduction of energy and operating expenses for operation of water supply and water distribution systems, – is considered. Economic reasonability of a multiple-choice hydraulic calculation of the water supply network of the right-bank part of Novosibirsk is shown. As a result of the technological studies and a series of hydraulic calculations, the most rational (in the event of an increase in the volume of water consumption in the future) scheme of development of the water supply network of the city has been developed. In a complex with hydraulic calculations of the water supply and distribution system of the right-bank part of Novosibirsk a check calculation of the sufficiency of pure water tanks capacity has been carried out and the quality of water supplied to the consumer for revealing the corrosive-aggressive properties has been analyzed.

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№4|2018

WATER DISTRIBUTION NETWORKS

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UDC 628.144

Luk’ianchuk Maksim, Hyamyalyainen M. M., Smirnova S. V., JUDIN M. Iu.

Hydraulic model use-case in the operation of a water and wastewater services utility

Summary

Hydraulic models are used at the water and wastewater services utilities for addressing different tasks related to improving the operation of water distribution networks. Practitioners have been continuously looking for possible ways of using the models for daily needs of the utilities and their technical execution with the use of software. The advanced software includes an adequate number of functions that ensure completing routine tasks of water distribution network operation, management and development. An example of modeling a fault pipeline section shutoff with sequential valve shifting is presented; a method of basic data generation and presentation of the modeling results is shown. In the viewed example during the routine work execution the hydraulic head is slightly changed. During the pipeline section cutoff pressure monitoring in the control points of the pressure zone and additionally in the sections where pressure reduction is expected based on the results of modeling is carried out. In appropriate cases pressure reduction in the network can be balanced by increasing the output pressure of the pumping station. Changing flow directions will influence to a small extent separate network sections that could be additionally flushed before the cutoff. Following the pipeline cutoff procedure together with the recommendations based on the results of hydraulic modeling provides for eliminating the disruption of water supply to the customers.

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№10|2016

WATER DISTRIBUTION NETWORKS

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UDC 628.32:62-192

GALPERIN E. M., Egorova Yu. A., Vas'kovskii A. V., Konevskii E. V.

Ways to improve the municipal water supply and distribution system

Summary

Simulation of all possible switch-overs in the municipal water distribution network caused by fault section cutoffs is practically unfeasible because of the large number of simulation cases. For the implementation a method of the distribution network dividing into separate districts (zones) with water flow rate measured at the input and outlet is suggested in a similar way to the elimination of leaks. Within the limits of each district including up to 50 km pipelines the search of the isolated sections becomes feasible. At that determi­ning the reliability of the water supply in each district as a part of the annual period when the customer receives water on a regular basis is possible. This is achieved with the use of Markov model for determining the period of the water distribution network being operational and in the state with simultaneously isolated sections. Then by hydraulic calculations the parameters of the network in non-operating conditions are determined; at that it is determined which parameters are related to the operation period with normal or lowered level of performance.

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