Impulse-based methods for fluid flow
- Univ. of California, Berkeley, CA (United States)
A Lagrangian numerical method based on impulse variables is analyzed. A relation between impulse vectors and vortex dipoles with a prescribed dipole moment is presented. This relation is used to adapt the high-accuracy cutoff functions of vortex methods for use in impulse-based methods. A source of error in the long-time implementation of the impulse method is explained and two techniques for avoiding this error are presented. An application of impulse methods to the motion of a fluid surrounded by an elastic membrane is presented.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE; California Univ.; Department of Defense
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 87798
- Report Number(s):
- LBL--37206; ON: DE95014792; CNN: Grant FDF49620-93-1-0053
- Country of Publication:
- United States
- Language:
- English
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