A numerical procedure for calculating partly elliptic flows
Abstract
A new finite-difference technique, designated EMIT, is presented for calculating flows that are parabolic (that is, boundary-layer type) in some regions and elliptic in others without recirculation. The technique uses velocities and pressure as the dependent variables, and employs a marching procedure in all regions of the flow, wherein calculations are made along only one plane of the flow domain at a time, and the entire planes are visited in an ordered sequence. An application of the method is made to the plume in calm, stably-stratified surroundings. For this test case, a comparison is made between the EMIT and the SIMPLE procedure of Patankar and Spalding (1972), and the EMIT algorithm appears to be more efficient than SIMPLE.
- Publication:
-
Journal of Mechanical and Engineering Science
- Pub Date:
- December 1979
- Bibcode:
- 1979JMecE..21..373I
- Keywords:
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- Boundary Layer Flow;
- Computational Fluid Dynamics;
- Elliptic Functions;
- Finite Difference Theory;
- Plumes;
- Axisymmetric Flow;
- Differential Equations;
- Iterative Solution;
- Turbulent Flow;
- Fluid Mechanics and Heat Transfer