| NUMERICAL SIMULATION FOR EARLY DEVELOPMENT OF WAKE VORTICES BEHIND A SEMICIRCULAR-SECTION CYLINDER |
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| 作者姓名： | Zhan Jie-min |
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| 作者单位： | Dept. of Applied Mech. and Engineering，Zhongshan Univ.，Guangzhou，510275 |
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| 摘 要： | o.INThoDUCTIONThenumericlmodellingoffluidflowproblemswithwakesisveryimportantinhydrthdynamicsandaeredynamics.Thefiniteelementmethod,withtheflexibilityofavariablemesh,issuperiortothefinitedifferencemethodinsolvingtheseproblems.However,thefi-nitedifferencemethedismuchlesscomplicatedthanthefiniteelementmethodatleastinre-spectofcomputerprogramming.Theboundary-fittedcoordinatesystem,whichhasboththeadvantagesofthegeometricflexibilityofthefiniteelementmethedandthesimplicityofthefinitedifferenceme…
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NUMERICAL SIMULATION FOR EARLY DEVELOPMENT OF WAKE VORTICES BEHIND A SEMICIRCULAR-SECTION CYLINDER |
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| Zhan Jie-min.NUMERICAL SIMULATION FOR EARLY DEVELOPMENT OF WAKE VORTICES BEHIND A SEMICIRCULAR-SECTION CYLINDER[J].Journal of Hydrodynamics,1999(2). |
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| Authors: | Zhan Jie-min |
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| Abstract: | Using boundary-fitted coordinate system, the Navier-Stokes equations in terms of stream function and vorticity are solved for the flow across a semicircular-sectioncylinder. The flow structure is analyzed for the Reynolds number Re=100. Vortex shedding behind the cylinder wake can be observed clearly. |
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| Keywords: | alternative vortex shedding numerical simulation boundary-fitted coordinate system |
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