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http://dx.doi.org/10.6108/KSPE.2015.19.1.009

A Study on the Effect of Mid Layer on Supersonic 2D Double Shear Layer  

Kim, Dongmin (Department of Aerospace Engineering, KAIST)
Baek, Seungwook (Department of Aerospace Engineering, KAIST)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.19, no.1, 2015 , pp. 9-17 More about this Journal
Abstract
The basic flow configuration is composed of a plane, double shear layer where relatively thin mid gas layer is sandwiched between air and fuel stream. The present study describes numerical investigations concerning the combustion enhancement according to a variation of mid layer thickness. In this case, the effect of heat release in turbulent mixing layers is important. For the numerical solution, a fully conservative unsteady $2^{nd}$ order time accurate sub-iteration method and $2^{nd}$ order TVD scheme are used with the finite volume method including k-${\omega}$ SST model. The results consists of three categories; single shear layer consists of fuel and air, inert gas sandwiched between fuel and air, cold fuel gas sandwiched between fuel and air. The numerical calculations has been carried out in case of 1, 2, 4 mm of mid layer thickness. The height of total gas stream is 4 cm. The combustion region is broadened in case of inert gas layer of 2, 4 mm thickness and cold fuel layer of 4 mm thickness compared with single shear layer.
Keywords
Supersonic Combustion; Double Shear Layer; Inert Gas; Dissipation Energy; Heat Blockage;
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