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Vol.9, No.4, November 2020. ISSN: 2217-8309 eISSN: 2217-8333
TEM Journal
TECHNOLOGY, EDUCATION, MANAGEMENT, INFORMATICS Association for Information Communication Technology Education and Science |
The Study of Hydrodynamic Processes Occurring on Transition of Sudden Expanding of Hydraulic Section of Plane – Parallel Full Pipe Flow
Arestak Sarukhanyan, Arevshad Vartanyan, Garnik Vermishyan, Vache Tokmajyan
© 2020 Arevshad Vartanyan, published by UIKTEN. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. (CC BY-NC-ND 4.0)
Citation Information: TEM Journal. Volume 9, Issue 4, Pages 1494-1501, ISSN 2217-8309, DOI: 10.18421/TEM94-23, November 2020.
Received: 14 September 2020. Revised: 03 November 2020.
Abstract:
The study regarding the regularity of
changes in the hydrodynamic processes in the area of a
sudden expanding in hydraulic section of the planeparallel
full pipe flow of the liquid is carried out on the
basis of the equations on the boundary layer. A method
has been developed for determining the changes in the
hydrodynamic parameters of the flow in the transition
section which makes it possible to obtain the profile of
the distribution of fluid velocities in any cross section
of the channel based on the results of deformation of
the areas of velocity under common initial and
boundary conditions. The hydrodynamic processes
occurring on transition of sudden expanding on
hydraulic section of plane-parallel full pipe flow are
studied in cases when: a) the velocity at any point of
the inlet section of the channel is constant; b) the
velocity at the inlet section is distributed according to
the parabolic law. The calculation results for various
values of the coefficient of expansion are given:
Keywords –transition; hydraulic section; function; velocity; distribution. |
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Based on the results of computer simulation, the
course of deformation of the velocity diagram along the
length of the transition section was obtained for a
constant and parabolic distribution of the velocities of
the fluid flowing into the expanded section of the
channel. The regularities of pressure distribution along
the length of the studied section were also determined.