Нерівномірність Притоку Води До Напірного Трубопроводу-Збирача Залежно Від Кута Приєднання Вхідних Струменів

Cherniuk, Volodymyr; Ivaniv, Vasyl; Tsenyuh, M. B.

doi:10.36930/40290920

Cited by 2 publications

(1 citation statement)

References 4 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Напірні збірні перфоровані трубопроводи, які працюють зі змінною витратою вздовж шляху, знаходять широке застосування в різних областях техніки, наприклад, водозабірних спорудах, системах примусової вентиляції, теплоенергетиці та ін. [1]. Особливо слід виділити їх використання в очисних спорудах систем водопостачання і водовідведення населених пунктів і промислових підприємств [2].…”

Section: вступunclassified

Determination of Boussinesq and Coriolis coefficients for pipelines operating with discharge connection along the path

Kravchuk¹,

Kochetov²,

Kravchuk³

2021

PWSH

View full text Add to dashboard Cite

Peculiarities of the diagrams of averaged fluid velocities in the cross-sections of pressure collecting perforated pipelines were determined on the basis of the experimental studies conducted by the authors. The most characteristic typical diagrams of averaged velocities in the pipelines cross-sections with their different design characteristics were given. A comparative analysis of the obtained diagrams with the diagrams of velocities that occur during uniform motion in pressure pipelines with solid walls was carried out. It is shown that the main difference between them occurs in the flow zones, which are located near the pipeline walls. It was explained by the connected liquid jets effect on the main flow. The degree of diagrams deformation was estimated by the value of the momentum coefficient α0 (Boussinesq coefficient) and the coefficient of kinetic energy α (Coriolis coefficient). It was determined that in the general case these coefficients will be variable in magnitude along the length of the studied pipes. Nevertheless, these coefficients are recommended to be constant in magnitude in engineering calculations. The limits of the structural characteristics of collecting perforated pipes for which this non-uniformity of the diagrams must be taken into account, and for which it can be neglected were determined on the basis of the analysis of the equation of fluid motion with a variable flow rate.

show abstract

Section: вступunclassified

Determination of Boussinesq and Coriolis coefficients for pipelines operating with discharge connection along the path

Kravchuk¹,

Kochetov²,

Kravchuk³

2021

PWSH

View full text Add to dashboard Cite

show abstract

To the Hydraulic Calculation of Pressure Drainage Pipelines, Operating in Distribution Regime

Kravchuk

2021

MEC

View full text Add to dashboard Cite

A system of two differential equations which describes the movement of fluid in a pipe with a variable flow rate and the conditions for the fluid outflow through the walls of drainage pipelines into the surrounding soil is considered. It is reasoned that the second term in the original equation, which takes into account energy losses associated with a flow rate variation along the length, can be neglected without a substantial error. The considered system is reduced to dimensionless form by introducing original variables. The coefficient of collecting drainage pipeline resistance «ζl» and the generalized parameter «A», which take into account the structural and hydraulic characteristics of the considered flow, are two main parameters used in the analysis. The concept of an infinitely long drainage pipeline (a pipeline with an infinite walls filtration capacity) is introduced in the article. Also it is noted that such pipeline will have a maximum throughput comparing to pipes of the same diameter but limited length. Quite simple and practical calculated dependencies for the determination of the nature of flow rate variation and pressure drop along the length of the pipeline were received on the basis of the conducted analysis. Important characteristics of pressure distribution pipelines were calculated on the basis of offered formulas. Corresponding graphical dependencies were built for visibility. In particular, graphs of the flow rate variation at the end of the distributor, depending on the design and filtration characteristics of the «soil-drain» system, are presented. Graph that shows the dependence of the variation in the flow rate distribution unevenness along the length of the drainage pipe at various hydraulic conductivity values of the surrounding soil is important for understanding the drainage pipelines particularity. The necessity to take into account the nature of the flow rate connection unevenness along the length for obtaining reliable results for real drainage pipelines calculation is demonstrated.

show abstract

Нерівномірність Притоку Води До Напірного Трубопроводу-Збирача Залежно Від Кута Приєднання Вхідних Струменів

Cited by 2 publications

References 4 publications

Determination of Boussinesq and Coriolis coefficients for pipelines operating with discharge connection along the path

Determination of Boussinesq and Coriolis coefficients for pipelines operating with discharge connection along the path

To the Hydraulic Calculation of Pressure Drainage Pipelines, Operating in Distribution Regime

Contact Info

Product

Resources

About