Shock enhancement and control of hypersonic mixing and combustionExperimental and computational analyses of the possibility that shock-enhanced mixing can substantially increase the rate of mixing between coflowing streams of hydrogen and air are discussed. Numerical computations indicate that the steady interaction between a weak shock in air with a coflowing hydrogen jet can be approximated by the two-dimensional time-dependent interaction between a weak shock and an initially circular region filled with hydrogen imbedded in air. Experimental results obtained in a shock tube and contoured wall injector are presented. It is shown that the shock impinging process causes the light gas cylinder to split into two parts; one of these mixes rapidly with air and the other forms a stably stratified vortex pair which mixes more slowly. The geometry of the flow field and the mixing process and scaling parameters are assessed.
Document ID
19900055655
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Marble, Frank E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Zukoski, Edward E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Jacobs, Jeffrey (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hendricks, Gavin (JPL Pasadena, CA, United States)
Waitz, Ian (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)