Transpiration effects in perforated plate aerodynamics

[摘要] Perforated walls find a wide use as a method of flow control and effusive cooling. Experimental investigations of the gas flow past perforated plate with microholes (110μm) were carried out. The wide range of pressure at the inlet were investigated. Two distinguishable flow regimes were obtained: laminar and turbulent regime.The results are in good agreement with theory, simulations and experiments on large scale perforated plates and compressible flows in microtubules. Formulation of the transpiration law was associated with the porous plate aerodynamics properties. Using a model of transpiration flow the "aerodynamic porosity" could be determined for microholes.

[发布机构] Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, Gdansk; 80-231, Poland^1

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Experimental investigations;Flow regimes;Micro holes;Microtubules;Perforated walls;Transpiration flows