A MODIFICATION TO THE SIMPLE METHOD FOR BUOYANCY-DRIVEN FLOWS
- 1 January 1998
- journal article
- research article
- Published by Taylor & Francis in Numerical Heat Transfer, Part B: Fundamentals
- Vol. 33 (1) , 65-78
- https://doi.org/10.1080/10407799808915023
Abstract
The essence of the SIMPLE method lies in its coupling between the momentum and continuity equations. Almost all the algorithms of the SIMPLE family are based on one precondition, that is, the corrected velocity is obtained from the corrected pressure only. However, in buoyancy-driven flows, there are two major factors driving the fluid movement: the temperature gradients and the pressure (including kinetic pressure) gradients. In this article, the effect of the temperature correction on the velocity correction is considered during the derivation of the pressure-linked equation. A modification to the SIMPLE algorithm, SIMPLET, is proposed and two cases are tested. It is shown that this modification provides a better convergence rate and more robust results.Keywords
This publication has 7 references indexed in Scilit:
- ENHANCEMENT OF THE SIMPLE ALGORITHM BY AN ADDITIONAL EXPLICIT CORRECTOR STEPNumerical Heat Transfer, Part B: Fundamentals, 1993
- Artificial pressure for pressure-linked equationInternational Journal of Heat and Mass Transfer, 1992
- TECHNICAL NOTE IMPROVED PRESSURE-VELOCITY COUPLING ALGORITHM BASED ON MINIMIZATION OF GLOBAL RESIDUAL NORMNumerical Heat Transfer, Part B: Fundamentals, 1991
- Solution of the implicitly discretised fluid flow equations by operator-splittingJournal of Computational Physics, 1986
- COMPARISON OF PRESSURE-VELOCITY COUPLING SOLUTION ALGORITHMSNumerical Heat Transfer, 1985
- ENHANCEMENTS OF THE SIMPLE METHOD FOR PREDICTING INCOMPRESSIBLE FLUID FLOWSNumerical Heat Transfer, 1984
- A calculation procedure for heat, mass and momentum transfer in three-dimensional parabolic flowsInternational Journal of Heat and Mass Transfer, 1972