Development and Verification of CFD Program by Central Difference Calculus for Incompressible Fluid

(Application to turbulence analysis)

Abstract

It was said that the lower limit of the critical Reynolds number was 2300 as a result of experiments on flow in a circular pipe. It was investigated whether this could be reproduced by CFD. When the center part of fluid phase with a radius of 40% was continuously disturbed strongly, no turbulence occurred near the wall under Reynolds number 2300, and turbulence occurred near the wall over Reynolds number 2400. The results were consistent with the experimental results.