Shock Standoff and Shape Predictions with Validation for Flat Face Cylinder

摘要

The paper presents the details and validation for an analytical model for predicting shock stand-off distance from a blunt body at supersonic speeds. Comparisons are made to experimental data for Mach Numbers 1.2 to 6.0 with flat face objects. Additionally a method to predict the oblique shock shape is presented and qualitative comparisons are made to both experimental and computational data. The usefulness of such a predictive tool set provides help in interpreting experimental data such as Schlieren images and in capturing a shock location using computational methods with the initial grid comforming to the shock shape when known apriori. An example of such usage is given to help interpret a poor quality Schlieren from a Mach 3.0 test.