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   COLLOQUIUM OF THE LABORATORY FOR COMPUTER DESIGN OF MATERIALS
                   School of Computational Sciences
                           (CSI 898-Sec 001)
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         Prediction of Flows over an Appended-Underwater Body

                               Chi Yang
        School of Computational Sciences, George Mason University

 The flow around an appended-underwater body is characterized by thick  
 boundary layers, vortical flow structures generated by hull-appendage  
 junctures, and appendage turbulent wakes. The spatial nonuniformity  
 and temporal fluctuations of the flow into the propulsor significantly  
 affect propulsor noise and performance. Accurate prediction of flows  
 around an appended-underwater body is of great importance to submarine  
 design applications.

 An unstructured grid-based, parallel incompressible flow solver has  
 been developed for the prediction of the flows over an  
 appended-underwater body. The incompressible Reynolds-Average  
 Navier-Stokes (RANS) equations with a Baldwin-Lomax turbulence model  
 are solved using projection schemes and a finite element method on  
 unstructured grids. This seminar will address the numerical algorithms  
 involved in the solver, and the generation of high-quality grids  
 suitable for RANS calculations. A series of applications
 will be discussed and the numerical results of ongoing research will  
 be presented.

                         Monday , February 9, 2004
                                  4:30 pm
                        Room 206, Science & Tech. I

Refreshments will be served at 4:15 PM.
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Find the schedule at http://www.scs.gmu.edu/lcdm/seminar/schedule.html
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