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Numerical simulations of a spacecraft at reentry conditions are presented. The fluid at such conditions is modeled as a reacting gas in thermal and chemical nonequilibrium. The reacting gas is modeled using a standard finite rate chemistry model for air. A twotemperature model is used to account for the thermal nonequilibrium effects. The finitevolume… (More)

- Thomas E. Schwartzentruber, Leonardo C. Scalabrin, Iain D. Boyd
- J. Comput. Physics
- 2007

Numerical simulations of axisymmetric flows over reentry configurations at hypersonic conditions using a Navier-Stokes solver are presented. The Navier-Stokes equations are modified using Park’s two-temperature model to account for thermochemical nonequilibrium and weak ionization effects. The finite-volume method is used to solve the set of differential… (More)

Hypersonic blunt-body flowfields containing a mixture of continuum and nonequilibrium flow are investigated using a modular particle–continuum numerical method. The modular particle–continuum method solves the Navier–Stokes equations in near-equilibrium regions and uses the direct simulation Monte Carlo method in nonequilibriumregions.Hypersonicflowof… (More)

Numerical simulations of axisymmetric flows over the FIRE-II spacecraft at reentry conditions using a Navier-Stokes solver being developed at the University of Michigan are presented. The finite-volume method is used to solve the set of differential equations. The code has the capability to handle any mix of hexahedra, tetrahedra, prisms and pyramids in 3D… (More)

- Andrew J. Lofthouse, Leonardo C. Scalabrin, Iain D. Boyd
- 2008

Hypersonic vehicles experience different flow regimes during flight due to changes in atmospheric density. Computational fluid dynamics, although relatively computationally inexpensive, is not physically accurate in areas of highly nonequilibrium flows. The direct simulationMonte Carlomethod, although physically accurate for all flow regimes, is relatively… (More)

Amodular particle–continuum numerical method is used to simulate steady-state hypersonic flow over a hollowcylinder-flare geometry. The resulting flowfield involves a mixture of rarefied nonequilibrium flow and high-density continuum flow. The hybrid particle–continuummethod loosely couples direct simulationMonte Carlo andNavier– Stokes methods, which… (More)

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