A comparison of mathematical formulations of the Navier-Stokes equations for modeling nonreacting flows in an axisymmetric dump combustor
Abstract
Three sets of mathematical formulations of the Navier-Stokes equations are used to predict the axisymmetric nonreactive laminar or turbulent recirculating flowfield within a cylindrical dump combustor. The study has given its main attention to the comparison of the numerical accuracy of all of the formulations which are cast into three categories in terms of stream-function/vorticity, velocity/vorticity, and velocity/pressure. Computations have employed an adaptation of the LEE-2/3 computer program in which the governing nonlinear, elliptic partial differential equations are derived in finite difference form and the k-epsilon model is used for turbulence closure. An iterative solution procedure is used to solve these three sets of the finite difference form of the governing equations. The results obtained are compared with published experimental data.
- Publication:
-
AIAA, SAE, ASME, and ASEE, 26th Joint Propulsion Conference
- Pub Date:
- July 1990
- Bibcode:
- 1990jpof.confS....L
- Keywords:
-
- Axisymmetric Flow;
- Computational Fluid Dynamics;
- Dump Combustors;
- Flow Distribution;
- Navier-Stokes Equation;
- Computerized Simulation;
- Finite Difference Theory;
- K-Epsilon Turbulence Model;
- Laminar Flow;
- Partial Differential Equations;
- Turbulent Flow;
- Fluid Mechanics and Heat Transfer