Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session L15: CFD: Algorithms II
8:00 AM–10:23 AM,
Monday, November 20, 2023
Room: 144C
Chair: Gennaro Coppola, Università di Napoli 'Federico II'
Abstract: L15.00011 : Adaptive Conservative Time Integration (ACTI) for Compressible Flow
10:10 AM–10:23 AM
Presenter:
Patrick Jenny
(ETH Zurich)
Authors:
Patrick Jenny
(ETH Zurich)
Jonas Luther
(ETH Zurich, Switzerland)
Recently, an adaptive conservative time integration (ACTI) scheme for finite volume methods was devised. Besides being adaptive in time, ACTI is conservative, all operations are local, and it is of high order in space and time. The performance of ACTI has been demonstrated for various hyperbolic conservation laws.
Here, an ACTI scheme for the compressible Navier-Stokes-Fourier system is introduced, which is particularly attractive for unsteady flows involving boundary layers. Unlike in inviscid flow simulations, the time step size not only is restricted by a CFL criterion, but also by the viscous terms. Further, in order to preserve 2nd order in space and time, a novel discretization scheme for the viscous fluxes is devised.
Results of various unsteady flows, including shock boundary layer interaction, demonstrate efficiency and accuracy of the new ACTI scheme. Further, given that all operations are local, it is an ideal candidate for massive parallel computations.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700