BEVEL GEAR SIMULATION

REPORT SUBMISSION- WEEK 1- BEVEL GEAR

• GRID DEPENDENCY TEST
• The method is based, in principle, on the generalized Richardson extrapolation theory but has been developed into a more generalized formulation applicable to a wider range of practical CFD cases by Roache.The method (called grid convergence index GCI method) yields discretization error bands for the investigated variable and thus represents a sophisticated quantification of mesh dependency.

However, it is important to note that the GCI method, by definition, does not account for general modelling errors, such as the choice of boundary conditions or turbulence model; only the error due to an insufficient spatial resolution can be quantified by this method.

The modelling errors may however be identified by comparing the numerical results with the experimental data.

ITS USE:

• It is used for an estimate on the numerical accuracy of the computed results, a mesh sensitivity analysis needs to be performed.