Transformation of two phase nozzle flow equations into pure type by introducing virtural area and virtual Mach number

Reddy, N. M.; Tulasiram, R. K.

doi:doi:10.1063/1.39460

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AIP Conference Proceedings / Volume 208

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Transformation of two phase nozzle flow equations into pure type by introducing virtural area and virtual Mach number

AIP Conf. Proc. 208, pp. 732-737; doi:http://dx.doi.org/10.1063/1.39460 (6 pages)

Current topics in shock waves 17th international symposium on shock waves and shock tube

Date: 17 Jul 1989

Location: Bethlehem, Pennsylvania (USA)

N. M. Reddy and R. K. Tulasiram

Department of Aerospace Engineering Indian Institute of Science Bangalore‐560012, India

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In nonequilibrium gas‐particle nozzle flows, new definitions for effective nozzle area ratio and effective, Mach number, which can be called as virtual area and virtual Mach number, are proposed. By using the definition of virtual area it is shown that the governing equations for the two‐phase nonequilibrium nozzle flow can be effectively reduced to pure type equations. This ‘‘pseudo pure gas’’ resembles that of real diatomic gas with vibrational mode relaxation. By combining the transformed mass and momentum conservation equations and by using the definition of virtual Mach number, simple area‐Mach number relations which are very similar to those of pure gas case have also been obtained.