One Type of Automatically Adjusted Difference Scheme with Artificial Viscosity to Calculate Ablated Exterior Shapes.

摘要

In the calculation of the exterior form of ablated reentry nose tips, through automatic wave filter processing with reference to the shape of the object, a type of explicit difference scheme with added artificial viscosity quantities was created. This type of scheme reaches first order accuracy in areas where shape change is wavy and second order accuracy in areas where it is smooth. Tests with numerical values clearly show that this type of method is effective in guaranteeing the accuracy of exterior shape calculations, enlarging time increments and saving computer time. Ablated Nose Tip, Reentry Heating, Aerodynamic Shape, Finite Difference.