Transonic Turbulent Flow Computations on Unstructured Triangular Grids

Th e numerical simulation of 2D steady transonic turbulent flow over aerofoil sections is considered on unstructured triatutular grids. The mass -averaged Navier-Stokes equations are employed, together with the k - w two-equation turbulence model. The Jameson- Sclimidi- Turkel algorithm is used and compared, in terms of accuracy and computational efficiency. With a MUSCL procedure, based upon R oe s fi 1l.7:-dijJeren ce splitting scheme. Both high and low Rey nolds number turbulence models are utilized to represent the sub-layer region. Simulations involving NACA 0012 and RA E2822 aerofoil are presented and th e results obtain ed are compared with available cxperiuieniol data.