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Une méthode de calcul des écoulements turbulents tridimensionnels dans les diffuseurs. (A method for calculating turbulent 3-D flows in diffusers). (French) Zbl 0603.76056

A method is described for calculating turbulent three-dimensional flows through diffusers. The pseudo-unsteady Reynolds equations, complemented by a mixing length type model of turbulence, are expressed in a curvilinear coordinate system and are discretized through space by a staggered grid technique. For the time integration, we apply an A.D.I. method, found by approximate factorization of a linearized implicit scheme. The numerical results are compared with experimental data for an axial diffuser and for a centrifugal compressor diffuser.

MSC:

76F99 Turbulence
76M99 Basic methods in fluid mechanics
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