Numerical and experimental investigation of the methane film cooling in subscale combustion chamber

Abstract

The characteristics of ¦lm cooling in a CH 4 /O 2 subscale chamber with multiinjector elements and two kinds of ¦lm cooling slot dimensions are investigated using a calorimeter chamber in experiments and simulations, in which the ¦nite rate chemistry with a reduced CH 4 /O 2 reaction mechanism is taken into account. The computed wall heat §ux and pressure distributions are compared to the experimental results, which overall show good agreement. A large slot dimension is shown to induce mixing with core §ow. This mixing causes a low heat- §ux distribution near face plate along with high combustion e©ciency.

Subgrid Turbulent Flux Models for Large Eddy Simulations of Diffusion Flames in Space Propulsion

“…In addition, they can facilitate the understanding of test results, since every relevant physical field is accessible. Consequently, CFD is an integral part of the design process of combustion chambers [6][7][8][9]. Traditionally, Reynolds Averaged Navier-Stokes (RANS) solvers have been extensively used in industry due to their low computational cost.…”

Experimental Investigation of Heat Transfer in a Subscale Liquid Rocket Engine

“…They are mainly based on calorimeter cooled segments where heat fluxes are deduced from enthalpy difference measurements of cooling channels. Such a setup was operated with methane and used for direct comparison with numerical simulations [9] and with both methane and hydrogen with specific focus on film cooling [10][11][12][13]. Ahn et al also used a calorimeter cooled combustion chamber to study the influence of bi-swirl injector recess length on the heat transfer at the wall for a multi-injector oxygen-kerosene configuration [14].…”