Numerical outflow boundary condition for Navier-Stokes flow calculations by a line iterative method
- 1 December 1985
- journal article
- research article
- Published by American Institute of Aeronautics and Astronautics (AIAA) in AIAA Journal
- Vol. 23 (12) , 1847-1848
- https://doi.org/10.2514/3.9184
Abstract
This study investigates the use of explicit/implicit, step/linear space extrapolation as numerical outflow boundary conditions for turbulent flow calculations. The emphasis is on the interplay between the use of curvilinear coordinate systems for complex flow calculation and the semi-implicit line iterative procedure. Both a planar single-channeled and an annular multichanneled flow configuration were used as test models. It was found that implicit linear space extrapolation needs more computing time and may not yield a unique solution. On the other hand, explicit zero-order space extrapolation appears to be a robust outflow boundary condition since it has the largest stability limit with respect to underrelaxation factors and initial conditionsKeywords
This publication has 5 references indexed in Scilit:
- A study of finite difference approximations to steady-state, convection-dominated flow problemsPublished by Elsevier ,2004
- A systematic comparison of several numerical schemes for complex flow calculationsPublished by American Institute of Aeronautics and Astronautics (AIAA) ,1985
- NUMERICAL RECIRCULATING FLOW CALCULATION USING A BODY-FITTED COORDINATE SYSTEMNumerical Heat Transfer, 1985
- Stable boundary approximations for a class of implicit schemes for the one-dimensional inviscid equations of gas dynamicsPublished by American Institute of Aeronautics and Astronautics (AIAA) ,1981
- The numerical computation of turbulent flowsComputer Methods in Applied Mechanics and Engineering, 1974