The Non N-s Equations And Their Applications Constant Aerodynamic

The research of this dissertation is focused on how to solve the 3-dimensional compressible Navier-stokes equations by the implicit finite difference algorithm and to simulate numerically the unsteady subsonic and transonic viscous flows around rigid and elastic wings. On the base of them the aeroelastic characterictics of an elastic wing have been studied.The moving grid of type C-H for wing are generated by an algebraic procedure. The steady and unsteady transonic (and subsonic) viscous flows around wing are numerically simulated. The 3-dimensional time-averaged compressible Navier-Stokes equations with B-L or J-K turbulent models are solved by the implicit LU-N7ND algorithm. The moving grids are attached to the wing and are generated at every time step in the calculation for the unsteady viscous flows. On the base of the numerical simulation of unsteady viscous flows, the characters of the static aeroelastics and flutter for the wings are researched.Some examples, simulating the steady and unsteady transonic (and subsonic) viscous flows around ONERA M6 wing, are given in this paper. The results calculated with B-L and J-K turbulent models are compared with experimental data. With the examples of some straight wing and sweep wing, the static aeroelastic characterictics of the wing are studied. Numerical results are in good agreement with some data and the method and procedure presented in this paper are verified. And then the wing抯 flutter characters of a missile wing are numerical simulated with the examples of a missile wing.