Higher-order viscous shock-layer solutions for high altitude flowsA higher-order viscous shock-layer (HVSL) method has been developed and is used to obtain physically consistent results under varying degrees of low-density conditions for perfect-gas and nonequilibrium flows past long slender bodies. This method is implemented with higher-order body and shock slip conditions. Detailed comparisons with the direct simulation Monte Carlo (DSMC) method and Navier-Stokes (NS) calculations establish HVSL as a computationally efficient code for the low-density calculations. Further, it is shown that the deficiencies in the standard viscous shock-layer (VSL) method when predicting low-density flows lie in the governing equations and not with the slip boundary conditions as considered by earlier researchers.
Document ID
19930057053
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gupta, Roop N. (NASA Langley Research Center Hampton, VA, United States)
Nayani, Sudheer N. (NASA Langley Research Center Hampton, VA, United States)
Lee, Kam-Pui (Vigyan, Inc. Hampton, VA, United States)
Zoby, Ernest V. (NASA Langley Research Center Hampton, VA, United States)