A NOTE ON THE APPLICATION OF THE AVERAGE CORRECTION TECHNIQUE

✍ Scribed by X. WEN; D. B. INGHAM; N. DOMBROWSKI; E. A. FOUMENY

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 364 KB
• Volume: 23
• Category: Article
• ISSN: 0271-2091
• DOI: 10.1002/(sici)1097-0363(19961030)23:8<811::aid-fld455>3.0.co;2-h

✦ Synopsis

This note develops an average correction technique for accelerating the rate of convergence of the SIMPLE-like algorithm by implementing the average pressure correction method as proposed by Wen and Ingham (Int. j. numer. mefhods fluids, 17, 385400 (1993); 19, 889-903 (1994)) with an average velocity correction. The technique is illustrated by considering the classical problem of fluid flow over a backward-facing step using (i) no average correction, (ii) an average velocity correction, (iii) an average pressure correction and (iv) both average velocity and pressure corrections. When both average velocity and pressure corrections are employed, it is found that the number of iterations required for convergence is almost independent of the initial guessed values of fluid velocity and pressure and the fastest rate of convergence may be achieved.