| Issue |
E3S Web Conf.
Volume 578, 2024
XL Siberian Thermophysical Seminar (STS-40)
|
|
|---|---|---|
| Article Number | 01010 | |
| Number of page(s) | 6 | |
| DOI | https://doi.org/10.1051/e3sconf/202457801010 | |
| Published online | 14 October 2024 | |
Flow in a channel with obstacles of different scales: A detached rib and a forward-facing step
Kutateladze Institute of Thermophysics SB RAS, 630090 Novosibirsk, Russia
* Corresponding author: yar-smulsky@yandex.ru
A numerical study of the flow in a channel with a forward- facing step was carried out. A single disconnected rib 3 mm high served as a passive control element in the range of Reynolds numbers from 2700 to 16400. The rib was installed at a distance to the ledge from 1.6 to 0.8 calibers at a height of 0.2 to 1 caliber. The introduction of an edge transforms the flow in front of the step. A tear-off area is created behind the rib. In cases of a high-lying rib, the separation area behind the shoulder becomes larger than the unregulated case, which leads to a loss of total pressure and an increase in the hydraulic resistance of the channel. Thermal-hydraulic efficiency was assessed; installing the fin at a close distance from the wall showed the best result
© The Authors, published by EDP Sciences, 2024
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