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http://dx.doi.org/10.5139/JKSAS.2002.30.6.053

Characteristics of Dual Transverse Injection in Supersonic Flow Fields I-Mixing Characteristics  

Shin, Hun-Bum (울산대학교 항공우주공학과 대학원)
Lee, Sang-Hyeon (울산대학교 수송시스템공학부 항공우주전공)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.30, no.6, 2002 , pp. 53-60 More about this Journal
Abstract
Based on the analyses of the single transverse injection in supersonic flow fields, the mixing characteristics of dual transverse injection of hydrogen in supersonic air flow are studied with computational methods. Three-dimensional Navier -Stokes and the k-$\omega$ SST turbulence model were used. A parametric study is conducted with the variation of the distance between two injectors. The flow patterns and the mixing characteristics of two injection flows are very different from each other, and the flow patterns and the mixing characteristics of the rear injection flow are strongly influenced by those of the first injection flow. The increase of the distance between two injectors up to a specific distance results in the increase of mixing rate and penetration of fuel. However, the increase of the distance over the specific distance results in the decrease of mixing rate and penetration of fuel. From the results it can be stated that there exists a distance between two injectors for optimum mixing characteristics.
Keywords
dual transverse injection; k-$\omega$ turbulence model; mixing characteristics; distance between injectors;
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