Abstract
The main goal of the article is a verification of the heat transfer coefficient numerically predicted by two CDF platforms – ANSYS-Fluent and OpenFOAM on the problem of impact flows oncoming from 2D nozzle. Various mesh parameters and solver settings were tested under several boundary conditions and compared to known experimental results. The best solver setting, suitable for further optimization of more complex geometry is evaluated.
Highlights
An impact flow is widely used for a very intensive drying effect of wet surfaces
From various computations the local heat transfer rates which were converted to dimensionless heat flux using equation 3 were obtained
The progress curves of the dimensionless heat flux is for all cases similar with a
Summary
It’s good performance is generally well known, there are still many geometric parameters to be exploit regarding their influence on drying. CFD simulation of nozzle designs may be accepted as a technically easiest approach to find the most efficient geometry of the nozzle. The prediction of near-wall turbulence parameters of the flow of various regimes along the wall for, is the most obvious problem. For the examination of the impact flow were used two highly sophisticated CFD packages. The commercial software ANSYS-Fluent 17.1 and open source package OpenFOAM 4.0. Both solvers computed the same flow problems of impact flow oncoming to a normal wall and results are later compared with experimental data
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