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VALIDATION OF A NAVIER–STOKES SOLUTION ALGORITHM WITH EXPERIMENTAL VALUES IN A SUPERSONIC WAKE
Author(s) -
LEOPOLD FRIEDRICH
Publication year - 1996
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/(sici)1097-0363(19960130)22:2<137::aid-fld267>3.0.co;2-3
Subject(s) - wake , navier–stokes equations , solver , supersonic speed , turbulence , mathematics , rotational symmetry , computational fluid dynamics , series (stratigraphy) , taylor series , compressibility , mathematical analysis , physics , geometry , mechanics , mathematical optimization , geology , paleontology
This paper describes the validation of a finite element solver for an axisymmetric compressible flow with experimental values, especially velocities measured with a laser Doppler anemometer in the near wake of a circular cylinder. The equations under consideration are the Navier‐Stokes equations with turbulent terms. A time‐stepping scheme for the solution of these equations can be produced by applying a forward‐time Taylor series expansion including time derivatives of second order. These time derivatives are evaluated in terms of space derivatives in the Lax–Wendroff fashion. The method is based on unstructured triangular grids with a high resolution in the radial direction. In order to predict the measured turbulent intensites more exactly, a modification of the Baldwin–Lomax model is necessary.