Numerical simulation of turbulent spots
Abstract
The incompressible Navier-Stokes equations are used to simulate the development of some large disturbances into turbulent spots. The vorticity transport equations are approximated by a simple one step semi-explicit, formally second-order accurate difference scheme, which is unconditionally stable. The velocity field is then determined from a set of Poisson equations which are solved by using an alternating direction implicit algorithm. The computed vorticity and velocity vectors are corrected on each time step to keep the solenoidality of them. Numerical disturbances are introduced into the Couette flow. Development of disturbances is investigated and consistency between the numerical results and experiments is obtained.
- Publication:
-
Acta Aerodynamica Sinica
- Pub Date:
- 1984
- Bibcode:
- 1984AcAer...4...34M
- Keywords:
-
- Computational Fluid Dynamics;
- Incompressible Flow;
- Navier-Stokes Equation;
- Turbulent Flow;
- Unsteady Flow;
- Vorticity Equations;
- Couette Flow;
- Finite Difference Theory;
- Flow Velocity;
- Numerical Flow Visualization;
- Poisson Equation;
- Fluid Mechanics and Heat Transfer