The increasingly diverse mission requirements result in challenges to the rapid design and functional diversification of underwater vehicles (UVs). The genealogical design of UVs shape is one of the key steps to deal with these challenges. In the present work, based on the hydrodynamic characteristics with different shape features of UVs, the hull shape genealogy including the spherical/spheroidal shape, slender axisymmetric shape, slender flat shape and round-dish shape was established according to the genealogy classification theory. Influence of the hull shape parameters and Reynolds numbers on hydrodynamics of the spherical/spheroidal shape, slender axisymmetric shape and slender flat shape for wide application in hull shape genealogy was investigated by using computational fluid dynamics (CFD) simulation method. The mathematical models of the drag coefficients of the hull shape genealogy with different shape parameters and Reynolds numbers were established by fitting the data obtained from CFD calculation. The accuracy of the established drag coefficient models was verified by the tank tests of “Petrel-L″ model developed by Tianjin University and SUBOFF model. Furthermore, the established drag coefficient models show higher accuracy than the traditional drag coefficient models, namely G&J model, VT model and MIT model, by comparing with the towing tank tests of SUBOFF model. The present research provides an important reference for realizing the rapid and efficient design of UVs with the same hydrodynamic shapes.

日益多样化的任务要求给水下航行器 (UV) 的快速设计和功能多样化带来了挑战。UV 形状的谱系设计是应对这些挑战的关键步骤之一。目前工作中，基于紫外线不同形状特征的水动力特性，根据谱系分类理论，建立了包括球体/类球体、细长轴对称形状、细长扁平形状和圆盘形状在内的船体形状谱系。通过使用计算流体动力学（CFD）模拟方法研究了船体形状参数和雷诺数对球体/类球体形状、细长轴对称形状和细长扁平形状的流体动力学的影响，以广泛应用于船体形状谱系。通过对CFD计算得到的数据进行拟合，建立了具有不同形状参数和雷诺数的船体形状谱系阻力系数的数学模型。通过天津大学研制的“Petrel-L”模型和SUBOFF模型的水槽试验验证了所建立的阻力系数模型的准确性。此外，建立的阻力系数模型与传统的阻力系数模型，即G&J模型、VT模型和MIT模型相比，与SUBOFF模型的拖曳水池试验相比，显示出更高的精度。本研究为实现具有相同流体动力学形状的紫外线的快速高效设计提供了重要参考。