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http://dx.doi.org/10.3744/SNAK.2004.41.1.023

Computation of Pressure Fields in the Lagrangian Vortex Method  

이승재 (서울대학교 조선해양공학과)
김광수 (서울대학교 조선해양공학과)
서정천 (서울대학교 조선해양공학과/ 해양시스템공학연구소)
Publication Information
Journal of the Society of Naval Architects of Korea / v.41, no.1, 2004 , pp. 23-30 More about this Journal
Abstract
In the Lagrangian vortex particle method based on the vorticity-velocity formulation for solving the incompressible Navier-Stokes equations, a numerical scheme for calculating pressure fields is presented. Implementation of the numerical method is directly connected with the well-established surface panel methods, just by dealing with the dynamic coupling among vorticity field. Assuming the vorticity and the velocity fields are to be calculated in time domain analysis, the pressure calculation for a complete set of solution at present time step is performed in a similar way to the one used in the Eulerian description. For a validation of the present method, we illustrate the early development of the viscous flow about an impulsive started circular cylinder for Reynolds number 550. The comparative study with the Eulerian finite Volume method provides an extensive understanding and application of the mesh-free Lagrangian vortex methods for numerical simulation of viscous flows around arbitrary bodies of general shape.
Keywords
Vorticity-Velocity Formulation; Lagrangian Vortex Method; Impulsively Started Circular Cylinder; Pressure Coefficient;
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