A nonlinear wavepacket tracking method for hypersonic boundary-layer flows on irregular domains∗

Oliver M.F. Browne; Anthony P. Haas; Hermann F. Fasel; Christoph Brehm

doi:10.2514/6.2020-2985

A nonlinear wavepacket tracking method for hypersonic boundary-layer flows on irregular domains^∗

Oliver M.F. Browne, Anthony P. Haas, Hermann F. Fasel, Christoph Brehm

Aerospace and Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

14 Scopus citations

Abstract

A novel numerical approach for simulating unstable nonlinear wavepackets in hypersonic boundary-layers is presented. The adaptive mesh refinement wavepacket tracking (AMR-WPT) method has been developed as an efficient alternative to conventional direct numerical simulations (DNS). The AMR-WPT method employs the nonlinear disturbances equations (NLDE), an overset dual mesh approach with higher-order interapolation, and adaptive mesh refinement (AMR) to track wavepackets in hypersonic boundary-layer flows. The AMR-WPT method is also extended for for complex geometries by coupling in an immersed boundary method (AMR-WPT-IBM). After introducing the numerical details, the method is employed to simulate linear and nonlinear wavepackets for an axisymmetric M=9.81 straight cone and 2-D/3-D M=5.35 flat plate boundary-layer. The simulation results are compared against classical stability and transition prediction tools, such as linear stability theory (LST), parabolized stability equations (PSE) and DNS. It is demonstrated that the AMR-WPT method requires only 10% of the number of grid points when compared to DNS of a nonlinear wavepacket inside a hypersonic flat plate boundary-layer flow.

Original language	English (US)
Title of host publication	AIAA AVIATION 2020 FORUM
Publisher	American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)	9781624105982
DOIs	https://doi.org/10.2514/6.2020-2985
State	Published - 2020
Event	AIAA AVIATION 2020 FORUM - Virtual, Online Duration: Jun 15 2020 → Jun 19 2020

Publication series

Name	AIAA AVIATION 2020 FORUM
Volume	1 PartF

Conference

Conference	AIAA AVIATION 2020 FORUM
City	Virtual, Online
Period	6/15/20 → 6/19/20

ASJC Scopus subject areas

Nuclear Energy and Engineering
Aerospace Engineering
Energy Engineering and Power Technology

Access to Document

10.2514/6.2020-2985

Cite this

A nonlinear wavepacket tracking method for hypersonic boundary-layer flows on irregular domains^∗. / Browne, Oliver M.F.; Haas, Anthony P.; Fasel, Hermann F. et al.
AIAA AVIATION 2020 FORUM. American Institute of Aeronautics and Astronautics Inc, AIAA, 2020. (AIAA AVIATION 2020 FORUM; Vol. 1 PartF).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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