| Summary: | 博士 === 國立臺灣科技大學 === 機械工程系 === 98 === An immersed boundary method with both virtual and heat source is developed here to solve Navier-Stokes and the associated energy transport equations. the key point of this novel nemerical method is that the solid object, stationary or moving, is first treated as fluid governed by Navier-Stokes equations for velocity and pressure, and by energy transport equation for temperature in every time step. An additional virtual force term is then compensated to the right hand side of mementum equations at the solid object region to make it acting mechanically like a solid rigid body immersed tn fluid exactly. Likewise, an additional virtual heat source term is applied to the right hand side of energy equation at the solid object region. For the case of moving objects without a prescribed velocity, the motion of object is tracked in Lagrangian reference by the equations of linear and angular momentum. We simulated some well-known and interesting cases to demonstrated the capability of the proposed method in handling fluid-structure interactions
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