What is it about?
Shock wave formation can be damaging during the operation of supersonic nozzles. This paper presents an analytical model to predict the formation of shocks in converging-diverging nozzles and the resulting modifications to more closely match experiment.
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Why is it important?
Predicting shock waves and the resulting separation in nozzles is important in predicting the forces experienced by the nozzle. If the forces are unbalanced enough, vehicle performance can be reduced or damage can occur to the nozzle. Analytical models allow for quicker calculation of the shock location and pressure compared to numerical simulations.
Perspectives
This project is an outgrowth of work that got me interested in perturbation methods. It started with only looking at isentropic relations and then was continuously extended with shock relations, first only at the nozzle exit, and now with a more general shock prediction method.
Dr. Brian A. Maicke
Pennsylvania State University
Read the Original
This page is a summary of: Evaluation of Quasi-One-Dimensional Modeling for Nozzle Flow Separation, July 2015, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2015-4174.
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