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

Mechanical and Aerospace Engineering

Producción científica: Conference contribution › revisión exhaustiva

16 Citas (Scopus)

Resumen

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.

Idioma original	English
Título de la publicación alojada	AIAA AVIATION 2020 FORUM
DOI	https://doi.org/10.2514/6.2020-2985
Estado	Published - 2020
Evento	AIAA AVIATION 2020 FORUM - Virtual, Online Duración: jun 15 2020 → jun 19 2020

Serie de la publicación

Nombre	AIAA AVIATION 2020 FORUM
Volumen	1 PartF

Conference

Conference	AIAA AVIATION 2020 FORUM
Ciudad	Virtual, Online
Período	6/15/20 → 6/19/20

Nota bibliográfica

Publisher Copyright:
© 2020, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

Financiación

This work was supported by the U.S. Air Force under a Phase 2 SBIR contract (FA9101-18-C-0018), with John Lafferty serving as the Technical Point of Contact. The views and conclusions contained herein are those of the authors and should not be interpreted as representing the official policies or endorsements, either expressed or implied, of the U.S. Air Force or the U.S. Government. This research is also part of the Blue Waters sustained-petascale computing project, which is supported by the National Science Foundation (awards OCI-0725070 and ACI-1238993) and the state of Illinois. Blue Waters is a joint effort of the University of Illinois at Urbana-Champaign and its National Center for Supercomputing Applications. Finally, the authors want to thank Dr. Eric Marineau for many fruitful discussions on this topic. This work was supported by the U.S. Air Force under a Phase 2 SBIR contract (FA9101-18-C-0018), with John Lafferty serving as the Technical Point of Contact. The views and conclusions contained herein are those of the authors and should not be interpreted as representing the official policies or endorsements, either expressed or implied, of the U.S. Air Force or the U.S. Government. This research is also part of the Blue Waters sustained-petascale computing project, which is supported by the National Science Foundation (awards OCI-0725070 and ACI-1238993) and the state of Illinois. Blue Waters is a joint effort of the University of Illinois at Urbana-Champaign and its National Center for Supercomputing Applications. Finally, the authors want to thank Dr. Eric Marineau for many fruitful discussions on this topic.

Financiadores	Número del financiador
Air Force Office of Scientific Research, United States Air Force
National Science Foundation Arctic Social Science Program	OCI-0725070, ACI-1238993
University of Illinois, Urbana-Champaign
U.S. Air Force	FA9101-18-C-0018

ASJC Scopus subject areas

Nuclear Energy and Engineering
Aerospace Engineering
Energy Engineering and Power Technology

Acceder al documento

10.2514/6.2020-2985

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title = "A nonlinear wavepacket tracking method for hypersonic boundary-layer flows on irregular domains∗",

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.",

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AB - 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.

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