Transpiration cooling of hypersonic flow past a flat plate with porous injection
Transpiration cooling of hypersonic flow past a flat plate with porous injection
Transpiration-based cooling using porous layer is explored where the coolant is injected into the hypersonic cross-flow, providing a more uniform distribution of the coolant. Three-dimensional direct numerical simulations of flow past a at plate with a porous layer are conducted at M = 5. Conjugate heat flux boundary condition is used as compared to the simpler isothermal wall. The coolant is injected through a porous layer composed of a staggered (body-centered cubic) arrangement of spheres. Smaller pressure ratios resulting in relatively smaller blowing ratios are used, which are found to be more effective in the experiments. Also, to mimic turbulent conditions in the experiments, wall-bounded disturbances are introduced upstream of the porous layer such that reasonable mixing of coolant is allowed inside the hypersonic boundary layer. It is noted from the moderately high Reynolds number cases that the lowest blowing ratio results in more cooling immediately downstream of the porous layer, while the highest blowing ratio show higher effectiveness farther downstream.
Hypersonic flows, transition, Transpiration cooling, porous layer
Sharma, Pushpender
31c7280b-e564-46cb-ad1a-bb7fa00f3887
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
Sandham, Neil
0024d8cd-c788-4811-a470-57934fbdcf97
25 May 2022
Sharma, Pushpender
31c7280b-e564-46cb-ad1a-bb7fa00f3887
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
Sandham, Neil
0024d8cd-c788-4811-a470-57934fbdcf97
Sharma, Pushpender, Deiterding, Ralf and Sandham, Neil
(2022)
Transpiration cooling of hypersonic flow past a flat plate with porous injection.
33rd Parallel CFD International Conference, , Alba, Italy.
25 - 27 May 2022.
4 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Transpiration-based cooling using porous layer is explored where the coolant is injected into the hypersonic cross-flow, providing a more uniform distribution of the coolant. Three-dimensional direct numerical simulations of flow past a at plate with a porous layer are conducted at M = 5. Conjugate heat flux boundary condition is used as compared to the simpler isothermal wall. The coolant is injected through a porous layer composed of a staggered (body-centered cubic) arrangement of spheres. Smaller pressure ratios resulting in relatively smaller blowing ratios are used, which are found to be more effective in the experiments. Also, to mimic turbulent conditions in the experiments, wall-bounded disturbances are introduced upstream of the porous layer such that reasonable mixing of coolant is allowed inside the hypersonic boundary layer. It is noted from the moderately high Reynolds number cases that the lowest blowing ratio results in more cooling immediately downstream of the porous layer, while the highest blowing ratio show higher effectiveness farther downstream.
Text
abstract_ParCFD2022
- Accepted Manuscript
More information
Published date: 25 May 2022
Venue - Dates:
33rd Parallel CFD International Conference, , Alba, Italy, 2022-05-25 - 2022-05-27
Keywords:
Hypersonic flows, transition, Transpiration cooling, porous layer
Identifiers
Local EPrints ID: 458076
URI: http://eprints.soton.ac.uk/id/eprint/458076
PURE UUID: 4680d81c-0a77-4806-93d7-8a9dfa1486b5
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Date deposited: 28 Jun 2022 16:36
Last modified: 17 Mar 2024 04:04
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Contributors
Author:
Neil Sandham
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