Modeling separated flow with use of two-equation turbulence model

Abstract

The article provides a development of recently published turbulence model KEFV. The submitted version of this model allows modeling transition in a separated flow. The model includes an adjustable mechanism for specifying generation of turbulence in laminar zones with high velocity gradients. The model is implemented in the FlowVision CFD software. Simulation of the air flow around low-Reynolds airfoil Eppler-387 is discussed in the article. The flow conditions are characterized by the Reynolds number Re = 200 000.

Keywords

• turbulent flow
• laminar-turbulent transition
• $k–\varepsilon$ turbulence model
• low-Reynolds calculations