Generation and adaptation of 3-D unstructured grids for transient problemsGrid generation and adaptive refinement techniques suitable for the simulation of strongly unsteady flows past geometrically complex bodies in 3-D are described. The grids are generated using the advancing front technique. Emphasis is placed not to generate elements that are too small, as this would severely increase the cost of simulations with explicit flow solvers. The grids are adapted to an evolving flowfield using simple h-refinement. A grid change is performed every 5 to 10 timesteps, and only one level of refinement/coarsening is allowed per mesh change.
Document ID
19900012678
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Loehner, Rainald (George Washington Univ. Washington, DC, United States)
Date Acquired
August 14, 2013
Publication Date
March 1, 1990
Publication Information
Publication: AGARD, Applications of Mesh Generation to Complex 3-D Configurations