采用几何边界条件的待定系数法,推导出回转体进流段双参数型线表达式,再利用轴线分布源汇的线元法,将回转体轴上分布的源汇离散,计算得到节点处的源强,进而求得回转体型线的压力分布.相比其他方法,其数据输入简单,易于编程,计算量小,可快速输出压力计算结果.最后采用此数值求解方法计算了SUBOFF的前体段压力分布,与模型试验结果十分吻合,结果可信.%A new and convenient method is proposed for the form design of a body of revolution and evaluating the pressure distribution on the surface in the paper. Given constraints on boundary conditions, a polynomial formulation with two variable parameters is derived to describe the shape of the forebody of revolution. Based on the shape of the body of revolution and ideal-fluid assumption, linear-element method is utilized to calculate the sinks and sources distributing along the rotational axis of the body, thus the pressure distribution on the surface can be computed based on the attribute of the sinks and sources. Compared with other methods, the advantage of the method presented is less computational cost and faster evaluation of the fluid pressure distribution. The method is validated by the international standard model-SUBOFF, and the numerical results given by the method in the paper show significant agreement with the corresponding experimental results.
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