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Author Anjorin, V. A. O. ♦ Barton, I. E.
Source CiteSeerX
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Simplev Algorithm ♦ Pressure Correction Term ♦ Discretized Momentum Equation ♦ Convergence Rate ♦ Pressure-correction Equation ♦ Small Time Step ♦ Time Step Term Decrease ♦ Simple Algorithm ♦ Small Velocity Under-relaxation Factor ♦ Velocity Under-relaxation Factor ♦ Under-relaxation Term ♦ Small Pressure Under-relaxation Factor ♦ Simple Vincent ♦ Temporal Term ♦ Standard Simple Algorithm ♦ Pressure Correction Equation ♦ Improved Version ♦ Reverse Effect ♦ Pressure Correction
Description Of the SIMPLE algorithm, International Journal Of Fluid Dynamics
The SIMPLEV (SIMPLE–Vincent) algorithm is an improved version of the ‘standard ’ SIMPLE algorithm where the under-relaxation and temporal terms are removed from the pressure correction equation of the SIMPLE algorithm. This paper focuses on the methodologies of the SIMPLEV algorithm and how it is used to solve the discretized momentum equations that yield the pressure correction terms of the pressure correction equation. The SIMPLE and SIMPLEV algorithms rely on under-relaxation to avoid divergence and there is the problem that by using a very small velocity under-relaxation factor or a very small time step, the convergence rate of the SIMPLE and SIMPLEV algorithms becomes extremely slow since a small pressure under-relaxation factor must be employed. The SIMPLE algorithm is assessed with a version that has the terms for the pressure correction equation that increases the pressure correction as the velocity under-relaxation factors or the time step terms decrease. It is shown that the SIMPLEV algorithm gives the reverse effect of this.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2001-01-01