Fast convergence numerical models for reactive flows
Abstract
Numerical methods are presented for modeling stabilized, unsteady reactive flows implicitly using a time-varying grid. The models are limited to gas phase flows and cannot describe laminar flames. Eulerian balance equations are defined for the total species masses, motion and enthalpy. The equations are adapted to turbulent fluxes and to quantification of the average reaction rates. Boundary and initial conditions are developed, assuming that the gas is initially at rest and experiences increasing pressure with motion downstream along a rectilinear grid. Sample results are provided for isothermal lines in a reheat loop and the velocity field around a combustible droplet.
- Publication:
-
NASA STI/Recon Technical Report A
- Pub Date:
- 1985
- Bibcode:
- 1985STIA...8547294D
- Keywords:
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- Combustible Flow;
- Computational Fluid Dynamics;
- Computational Grids;
- Convergence;
- Flow Equations;
- Flow Velocity;
- Turbulent Flow;
- Fluid Mechanics and Heat Transfer