Coupling of the boundary element method with an integral momentum boundary-layer technique to calculate forces and moments on three-dimensional bodies
The direct boundary element method is used to calculate the potential flow about bodies of complex geometry in a uniform stream at arbitrary angles of attack. The solution makes use of the double-node concept to improve the quality of the solution in regions with corners and reentrant boundaries. The boundary element method is coupled to an integral momentum boundary-layer solution which accounts for laminar and turbulent boundary layers and the effects of surface roughness. Axial force predictions are compared with experimental data for several shapes and show good agreement. Pitching moment and normal force calculations on axisymmetric and three-dimensional bodies also show agreement with experiment for small angles of attack. 12 refs., 7 figs., 1 tab.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6219099
- Report Number(s):
- SAND-88-2115C; CONF-890677-1; ON: DE89006328
- Country of Publication:
- United States
- Language:
- English
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420200* -- Engineering-- Facilities
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& Techniques
640410 -- Fluid Physics-- General Fluid Dynamics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOUNDARY LAYERS
CONTINUITY EQUATIONS
DATA
DIFFERENTIAL EQUATIONS
EQUATIONS
EQUATIONS OF MOTION
FLUID FLOW
INCOMPRESSIBLE FLOW
INFORMATION
LAMINAR FLOW
LAYERS
NUMERICAL DATA
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
POTENTIAL FLOW
ROUGHNESS
SURFACE PROPERTIES
THEORETICAL DATA
THREE-DIMENSIONAL CALCULATIONS
TURBULENT FLOW