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Article overview
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Mesh Resolution Effect on 3D RANS Turbomachinery Flow Simulations | Sergiy Yershov
; Viktor Yakovlev
; | Date: |
1 Sep 2016 | Abstract: | The paper presents the study of the effect of a mesh refinement on numerical
results of 3D RANS computations of turbomachinery flows. The CFD solver F,
which based on the second-order accurate ENO scheme, is used in this study. The
simplified multigrid algorithm and local time stepping permit decreasing
computational time. The flow computations are performed for a number of turbine
and compressor cascades and stages. In all flow cases, the successively refined
meshes of H-type with an approximate orthogonalization near the solid walls
were generated. The results obtained are compared in order to estimate their
both mesh convergence and ability to resolve the transonic flow pattern. It is
concluded that for thorough studying the fine phenomena of the 3D
turbomachinery flows, it makes sense to use the computational meshes with the
number of cells from several millions up to several hundred millions per a
single turbomachinery blade channel, while for industrial computations, a mesh
of about or less than one million cells per a single turbomachinery blade
channel could be sufficient under certain conditions. | Source: | arXiv, 1609.0063 | Services: | Forum | Review | PDF | Favorites |
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