Numerical Investigations on Transpiration Cooling for Scramjet Applications using different Coolants

Numerical Simulation of Coolant Variation in Laminar Supersonic Film Cooling

“…In case of hydrogen and helium, due to their larger specific heat capacities, the mass flow rate can be greatly reduced while achieving the same cooling efficiency as when using air. 6 The injection of various cooling gases into a laminar supersonic boundary layer was recently investigated in experiments by Hombsch et al 1 An inclined flat plate mounted on a wedge model is used in a hypersonic shock tunnel to create a laminar boundary layer with supersonic velocities at the boundary layer edge, see The test gas for the main flow is air. Various coolants at ambient temperature are injected into the boundary layer.…”

Pyrolysis in Porous Media: Numerical Analysis and Comparison to Experiments

“…Studying porous flow is of interest in numerous fields of research and more specifically in the present framework of active cooling intended to be used on highly thermally loaded structures [1,2]. Transpiration cooling through a porous structure is highly efficient as shown by Langener et al [3,4]. This technology is found in rocket engines and chambers for example [5,6].…”

Pyrolysis in Porous Media: Part 2. Numerical Analysis and Comparison to Experiments

“…Transpiration cooling through a porous structure is highly efficient as shown by Langener et al (2011) and by Cheuret et al (2011). This technology is found in rocket engines and chambers for example (Arnold et al, 2009;Kanda et al, 1994).…”