Numerical optimization studies of axi-symmetric unsteady sprays
Abstract
Numerical experiments were made on a system of nonlinear, axisymmetric, unsteady equations for the modeling of realistic two-spray combustion. An alternating direction implicit (ADI) method is an efficient finite difference approach involving a solution of a set of tridiagonal matrices; the hyperbolic equations can be handled by the method of characteristics since the finite difference technique is inadequate in cases such as multivalued functions of the droplet radius and velocities. A computer code for solving model equations includes the numerical parameters of spatial mesh-size, time steps for the discretization of the differential equations and of the spray injection description, and the number of characteristics utilized.
- Publication:
-
AIAA, Aerospace Sciences Meeting
- Pub Date:
- January 1981
- Bibcode:
- 1981aiaa.meetT....A
- Keywords:
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- Axisymmetric Flow;
- Fuel Sprays;
- Unsteady Flow;
- Alternating Direction Implicit Methods;
- Drops (Liquids);
- Mathematical Models;
- Optimization;
- Fluid Mechanics and Heat Transfer