空泡附加质量建模的改进

基于通过实验检验过的圆盘表面速度分布估算公式,对圆盘空泡附加质量的数学模型进行了改进,给出了更精确的空化圆盘附加质量计算公式,分析了原线性速度分布假设下的计算公式的准确性,建立了带两个空泡的航行体附加质量计算模型。改进的模型不仅反映了带空泡航行体的附加质量变化规律,而且因为模型是建立在实验数据基础上,所以可靠性更高。

Improved model of added mass of cavity body

The mathematical model of added mass of cavitating disk is improved based on an experimental-ly-verified estimated velocity distribution on the surface of the disk. A more accurate added mass calculat-ing formula is given for cavitating disk and the accuracy of the primary calculating formula under the lin-ear hypothesis is analyzed. Finally, an added mass model for underwater body with two attached cavities is proposed. The improved model shows the varying law of the added mass of cavity body, furthermore, it is more reliable due to using experimental data.