| The history development and application of Arbitrary Lagrangian-Eulerian(ALE) are in introduced, and the basic theory of ALE method is also elaborated in detail in this paper. The ALE formulation is a generalized concept to deal with the problem of moving boundaries around a continuum. The fluid motion is described by the original variable Navier-Stokes (N-S) equations and Poisson equations in pressure. The material modeled by a elasticity-viscosity-plasticity system. The fluid do main was divided by quadrilateral elements;By using power factorial calculated advection Flux .The ALE method are introduced ,it is connected by Eulerian method and Lagrangian method. ALE method has the advantage of Eulerian methods and Lagrangian method , so it not only solve distortions in the larger movement ,but also provide fluid movement within the details . Account for methods has a larger interoperability.Through to the ALE method introduction, may from the theory and the computation the angle had the profound comprhend and the understanding to the ALE method also has laid the important foundation for the procedure establishment. Has completed the two-dimensional ALE method computational procedure debugging, the establishment. Using this procedure to the uni-dimensional shock tube, 90°the swan neck carried on two examples to carry on the confirmation to the ALE method. The globe collapsed this example to confirm the ALE method to be possible the big distortional movement question which produced to the grid to carry on numerical simulation, the value analogue result chart is reasonable, basically tallied with the related theory analysis result and the experimental result, indicated the programming and the establishment were successful.Based on the SALE frame, the early code of ALE, compiled has been suitable for the Solid Rocket Motor combustion chamber flow field analysis computational procedure, the solution gas phase flows. Calculates the example for the two-dimensional combustion chamber compressible flow field. The numerical simulation result has promulgated in the combustion chamber the transient state mobile detail. This example confirmed has used the ALE method to calculate the combustion chamber in flow field is feasible. This method has studied time-dependent unstable condition burning for the next step of value to lay the foundation. Has provided a direct solution new mentality for the solid propellant engine in flow field simulation. |
