Abstract
The time-dependent Navier-Stokes equations, including the effects of finite rate chemistry, are numerically integrated to predict the steady-state behavior of several model supersonic flandholders. The conservation equations governing chemically reacting flows are solved using a technique based on the idea of rescaling the equations in time such that all convective and chemical processes evolve on similar pseudo time scales. To accomplish this, the conservation equations are preconditioned to remove the stiffness associated with these equations. The method can be used to compute the steady-state solution very efficiently, regardless of whether the flow is frozen, finite rate, or in equilibrium. Two candidate supersonic flameholders are analyzed to assess their operating characteristics. The geometries include a ramp and a rearward-facing step. All flows consider a premixed H2-airstream and use the global chemistry model of Rogers and Chinitz. Several different kinds of flowfields are generated, depending on the level of heat release.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call