ZONAL-LOCAL SOLUTION METHOD FOR THE TURBULENT NAVIER-STOKES EQUATIONS

A ZONAL-LOCAL solution method is developed for the solution of the com pressible Navier-Stokes equations. The main feature of the method is c oupling of the Navier-Stokes equations with the Euler equations and th e local mesh solution procedure. Mesh sequencing (multilevel) techniqu e is also used for the improvement of the efficiency of the algorithm. The methodology is applied to turbulent flowfields past an airfoil. A flux vector splitting method with an upwind scheme up to fourth-order accuracy is used for the discretization of the inviscid fluxes. The s ystem of the equations is solved by an unfactored implicit method usin g Gauss-Seidel relaxation.