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Effect of Porosity and Injection Ratio on the Performance of Transpiration Cooling through Gyroids †.
- Source :
- International Journal of Turbomachinery, Propulsion & Power; Dec2023, Vol. 8 Issue 4, p50, 12p
- Publication Year :
- 2023
-
Abstract
- This paper presents experimental measurements of adiabatic effectiveness for three transpiration cooling porosities ( ϕ = 0.3, 0.4, and 0.5) constructed from gyroid lattice structures. To the authors' knowledge, this is the first use of a Triply Periodic Minimal Surface (TPMS) function to produce transpiration test coupons of varying porosity. Polymer gyroid lattice structures were successfully printed using Stereolithography (SLA) down to ϕ = 0.3 for a print resolution of 25 microns and unit cell size of 2 mm. Cooling performance was measured in a small-scale wind tunnel. High-resolution Infrared Thermography was used to determine wall temperatures downstream of the porous section. When tested at both common blowing ratios ( M = 0.029, 0.048, and 0.062) and common injection ratios ( F   = 0.010, 0.017, and 0.022) the cooling performance was found to be dependent on porosity for constant M but not for constant F . Having determined F as the more important parameter for comparison, results are presented alongside transpiration and effusion data from literature. [ABSTRACT FROM AUTHOR]
- Subjects :
- POROSITY
WIND tunnels
MINIMAL surfaces
UNIT cell
CELL size
Subjects
Details
- Language :
- English
- ISSN :
- 2504186X
- Volume :
- 8
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- International Journal of Turbomachinery, Propulsion & Power
- Publication Type :
- Academic Journal
- Accession number :
- 174440719
- Full Text :
- https://doi.org/10.3390/ijtpp8040050