A numerical/experimental study of the hydrodynamics of reversing flows around a cylinder
- Univ. of Texas, Austin, TX (United States). Offshore Technology Research Center
A study of the nonlinear and random behavior of flow-induced forces on offshore structure is presented. This study seeks to improve the understanding of the basic hydrodynamics of reversing flow around a cylinder. The experiments use a computer controlled water tunnel to generate a planar reversing flow field about a force instrumented cylinder. Laser Doppler Velocity measurements and flow visualization techniques are used in conjunction with numerical simulations to gain new fundamental insights into the relationship between the far flow field and the near wake flow dynamics. The numerical studies are based on a finite-element method for the unsteady incompressible Navier-Stokes equations in two dimensions. The momentum equations combined with a pressure correction equation are solved employing a non-staggered grid. The solution is advanced in time with an explicit/implicit marching scheme. Applications of the developed algorithm include unsteady calculations of uniform and oscillating flows around a cylinder. Comparisons with experimental data evaluate accuracy and robustness of the method.
- OSTI ID:
- 55721
- Report Number(s):
- CONF-940230--; ISBN 0-7918-1264-2
- Country of Publication:
- United States
- Language:
- English
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