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For the purpose of simulation of the deployment and retrieval of deep sea mining system, two methods for assessing the added mass of components of deep sea mining system are mainly proposed in this work. The first method is referred to as the Hess-Smith method which is based on surface panel method and potential theory, the surface of the moving object is discretized to lots of panels to approximate...
The aerodynamic characteristics directly affect driving characteristics, stability, operation, oil consumption, and safety of automobiles. The virtual wind tunnel experiment simulation based on finite element method has provided useful theoretical reference to automobile bodywork design. In this study, the air flow and distribution information around the automobiles was obtained using aerodynamic...
We propose a new Bio-manipulation method which is based on micro hydrodynamics. Compare with other present bio-manipulation methods, our system which do not directly contact with cell is no-harmful and soft manipulation. The system implements its function by controlling a small a amount of volume of liquid stream. For manufacture the prototype to confirm the basic principle of our idea, we design...
Centrifugal pump is one of the most important energy conversion device widely used in almost all industrial fields. Improving operating performance of pump is of great significance for energy saving and safety in production. The asymmetrical distribution of flow field and radial force that will cause flow-induced vibrations which reduce operating stability and reliability of centrifugal pump were...
Smooth Particle Hydrodynamics (SPH) is an accurate method in fluid numerical simulation. In this paper we introduce a calculating algorithm based on the SPH, and propose an interactive method to simulate fluids with free surfaces. This method is completely consistent with the dynamic behavior of a viscous fluid, namely described by Navier-Stokes equations. In addition, for online simulation, we adopt...
Taking the new screw propeller driven by a flexible transmission shaft into consideration, some analytic work has been brought out on the relationship between its input and output motions with its math model. With the help of the CFD software FLUENT, the paper also presented some research work on the hydro-resistance force and pressure distribution of the propeller, which is set into three stances...
In this article, we adopt Jin et al.'s GPU-based method to solve the Navier-Stokes equations and model the fluid evolution of the patterning process. Based on this method, we add more flexible dye injection operations and more locally controllable pattern design tools. We based our nondissipative solver on semi-Lagrangian methodology, which eliminates the blur artifacts while keeping the performance...
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