Influence of Numerical Diffusion on Exactness of Calculation in Software Fluent

Authors

  • V. Michalcova Technical University of Ostrava, Czechia
  • K. Kotrasova Technical University of Kosice, Slovakia

Keywords:

numerical diffusion, grid, Fluent

Abstract

Numerical diffusion impairs the exactness of discrete solutions of the equations governing the convective transport of a scalar when the flow is not aligned with grid lines. Numerical diffusion leads to the unintentional smoothing of adverted gradients. This work presents an assessment of numerical diffusion in CFD code FLUENT 6.3 and available means of reducing impairment.

Author Biographies

V. Michalcova, Technical University of Ostrava, Czechia

Dept. of Structural Mechanics

K. Kotrasova, Technical University of Kosice, Slovakia

Dept. of Structural Mechanics, Institute of Structural Engineering

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Published

2012-07-01

Issue

Vol. 5(54) No. 1 (2012)

Section

CIVIL ENGINEERING