- By:
- Oz, Furkan ; Kincaid, Kellis C; Delchini, Marc Olivier ; Gottiparthi, Kalyana C; Glasby, Ryan S; Curtis, Franklin G
- Page Number:
- 1563
- Book Title:
- AIAA SCITECH 2025 Forum
- Publication Date:
- March 12, 2026
- Publisher Location:
- American Institute of Aeronautics and Astronautics, Virginia, United States of America
- Conference Name:
- AIAA SciTech Forum
- Conference Location:
- Orlando, Florida, United States of America
- Conference Sponsor:
- AIAA
- View DOI Listing:
- https://doi.org/10.2514/6.2025-1563
Abstract
Artificial compressibility (AC) methods for incompressible flows perturb the mass continuity equation by the time derivative of the pressure field to achieve direct coupling between pressure and velocity without the need for a projection method. Several variations of the original AC method have been proposed (e.g., the entropically damped artificial compressibility [EDAC] method) that can, in some scenarios, improve on the original model. In this paper, we methodically compare the results of the original AC model and the EDAC model for both steady-state and transient problems with coupling between the momentum and energy equations. We demonstrate that the EDAC model and the AC model yield similar numerical results, and the EDAC model is 10%-20% faster than the AC model for a given problem.
