Analysis of hypersonic nozzles including vibrational nonequilibrium and intermolecular force effectsA computational fluid dynamics algorithm is developed for the study of high-pressure axisymmetric hypersonic nozzle flows. The effects of intermolecular forces and vibrational nonequilibrium are included in the analysis. The numerical simulation of gases with an arbitrary equation of state is discussed. Simulations for a high pressure nozzle (p(0) = 138 MPa) demonstrate that both intermolecular forces and vibrational nonequilibrium have a significant affect on the flow. These nonideal effects tend to increase the Mach number at the nozzle exit plane. Thus, they must be included in the design and analysis of high pressure hypersonic nozzles.
Document ID
19920043153
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Canupp, Patrick W. (NASA Headquarters Washington, DC United States)
Candler, Graham V. (NASA Headquarters Washington, DC United States)
Perkins, John N. (NASA Headquarters Washington, DC United States)
Erickson, Wayne D. (North Carolina State University Raleigh, United States)