An implicit method for turbulent boundary layers simulation

نویسنده

  • Bruno KOOBUS
چکیده

Here, we describe a numerical method which combines a mixed nite volume//nite element formulation on unstructured triangulations and a linearized implicit method for time advancing. A particular attention has been paid to the source term implicitation. This method is applied to three typical low-Reynolds number k ? " models, namely those of Lam-Bremhorst, Nagano-Tagawa and Speziale-Abid-Anderson. The selected test cases consist of a subsonic ow in a duct and a supersonic ow over a at plate. Une m ethode implicite pour la simulation des couches limites turbulentes R esum e : On propose une m ethode num erique qui combine une formulation mixte volumes nis/ el ements nis sur des triangulations non structur ees et une m ethode implicite lin earis ee pour l'avancement en temps. Le traitement implicite du terme source a fait l'objet d'une attention particuli ere. Cette m ethode est appliqu ee a trois mod eles k ? " bas-Reynolds, a savoir les mod eles de Lam-Bremhorst, Nagano-Tagawa et Speziale-Abid-Anderson. Les cas tests pr esent es sont un ecoulement subsonique de conduite et un ecou-lement de plaque plane a grand nombre de Mach.

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تاریخ انتشار 1994