重型门桥水阻力的计算流体力学数值模拟

Numerical Simulation of Computation Fluid Dynamics for Hydro-resistance of Heavy Ferry Raft

应用流固耦合理论及计算流体力学有限元法对重型门桥的水阻力问题进行了数值模拟 ,分析了不同的航速、不同的门桥类型以及不同的舟体排列方式对门桥运动的流场中速度、压强等流体参数分布的影响 ,得到了不同模式下舟体物面的压力曲线。对模拟结果进行了分析 ,并与相关的经验公式进行了比较。证明了数值模拟的准确性和可靠性。对重型舟桥的舟体线型。

The fluid-solid coupling theory and the Finite Element Method (FEM) of Computation Fluid Dynamics (CFD) are applied to simulating the hydro-resistance problems of heavy ferry raft. The influences of the forward speed, type of the ferry raft and array mode of the pontoons to the distribution of velocity, pressure and any other parameters in the flow field are analyzed. The pressure curves of the pontoon hull surface are obtained. By analysis of the numerical results and the comparison of them and the results obtained from the correlative experiential formulae, the veracity and reliability of the numerical simulation are verified. The simulation provides theoretical gists to improve the linetype of the heavy pontoon bridge, structural form of ferry raft and the hydro-dynamical capability of ferry raft.