Progress update on inclusion of atmospheric profiling for sonic boom propagation through turbulence

Abstract

Research continues in the field of sonic boom propagation to aid international efforts in technical standards of civil supersonic aircraft, and simulation is necessary to validate the data produced by up-and-coming demonstration aircraft. Turbulence is important when considering how sonic booms propagate; their effects can be heard at the ground as demonstrated through the SonicBAT project. Current efforts are being made to improve the turbulent sonic boom propagation code KZKFourier to increase accuracy and robustness. This presentation will serve as progress update on including atmospheric profiling in KZKFourier. Previous versions did not have this feature. The inclusion of atmospheric profiling in KZKFourier will allow for quantities such as humidity, density, and temperature to vary within the atmospheric boundary layer. The presentation will discuss both the analytical inclusion of profiling on the Khokhlov–Zabolotskaya–Kuznetsov (KZK) equation methodology and its implementation in the C + + code. [Work supported by the FAA through ASCENT Project 57 under the supervision of Sandy Liu. Any opinions, findings, conclusions, or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the FAA.]