ACCELERATION OF BLUFF BODY CALCULATION USING MDGRAPE-2

Bluff body calculation was accelerated by using a special-purpose computer,MDGRAPE-2, that was exclusively designed for molecular dynamics simulations. The three mainissues were solved regarding the implementation of the MDGRAPE-2 on vortex methods. Theseissues were the efficient calculation of the Biot-Savart and stretching equation, the optimization of thetable domain, and the round-off error caused by the partially single precision calculation in theMDGRAPE-2. Finally this technique was applied to calculation of flow around a circular cylinder.The drag and lift coefficient was investigated to check the validity of the proposed method.