High-Accurate, Physics-Based Wake Simulation Techniques
Abstract
A code was developed that utilizes the discontinuous Galerkin method to solve the Euler equations while utilizing a modal artificial viscosity sensor developed by Klockner to accurately and efficiently model the wake of an aircraft or rotor craft. The sensor was augmented for the purpose of this research so that it could be run more quickly as well as having a more robust adaptation to different problems and specifically for this research the vortex burst problem. For the wake it focuses on validation for modeling the vortex bursting element. Two changes were made to the sensor to both increase the speed of the sensor's application as well as make the sensor more robust. The sensor was made more robust by allowing for the sensor to sense on more variables by changing the baseline decays additive factor. In this case the change made allowed for sensing on velocity terms where the velocity may not always have a value greater than zero. To increase the speed the transition from a nodal system to a modal system was augmented so that the op count could be reduced. These changes were tested against two standard problems and then applied to the vortex bursting problem.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 27, 2015
- Accession Number
- ADA618194
Entities
People
- Andrew Shelton
- Robert Watson Iii
Organizations
- Auburn University