Free-Surface Wave-Induced Separation

Author:

Zhang Z. J.1,Stern F.1

Affiliation:

1. Department of Mechanical Engineering, Iowa Institute of Hydraulic Research, The University of Iowa, Iowa City, Iowa 52242

Abstract

Free-surface wave-induced separation is studied for a surface-piercing NACA 0024 foil over a range of Froude numbers (0, .2, .37, .55) through computational fluid dynamics of the unsteady Reynolds-averaged Navier-Stokes and the continuity equations with the Baldwin-Lomax turbulence model, exact nonlinear kinematic and approximate dynamic free-surface boundary conditions, and a body/free-surface conforming grid. The flow conditions and uncertainty analysis are discussed. A topological rule for a surface-piercing body is derived and verified. Steady-flow results are presented and analyzed with regard to the wave and viscous flow and the nature of the separation.

Publisher

ASME International

Subject

Mechanical Engineering

Reference21 articles.

1. Beaver, W. E., 1991, “PACT Surface Piercing Foil Experiments - Experiment Description and Force Data,” DTRC Report, DTRC/SHD-1358-01, Apr.

2. CFD Workshop Tokyo, Proceedings Vol. 1 and 2, Ship Research Institute Ministry of Transport Ship & Ocean Foundation, 22–24 Mar. 1994.

3. Chapman G. T. , and YatesL. A., 1991, “Topology of Flow Separation on Three-dimensional Bodies,” Applied Mechanics Review, Vol. 44, No. 7, July, pp. 329–345.

4. Chen, H. C., and Patel, V. C., 1989. “The Flow Around Wing-body Junctions,” 4th Symp. Num. Phys. Aspects Aerodyn. Flows, Long Beach, CA.

5. Chen H. C. , and PatelV. C., 1990, “Solutions of Reynolds-Averaged Navier-Stokes Equations for Three-Dimensional Incompressible Flows,” Journal of Computational Physics, Vol. 88, No. 2, pp. 305–335.

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