棱柱型滑行艇在规则波中迎浪运动响应的频域解

摘要

滑行艇在高速滑行时因其艇重基本由水动升力支撑,用较常规的排水型船运动预报方法计算并不准确.针对这一问题提出了一种计及水动升力影响的预报方法,用于计算棱柱型滑行艇在静水中的滑行姿态和波浪中的运动响应.在半经验公式的基础上,讨论了水动升力对各水动力系数的影响,并建立了棱柱型滑行艇在规则波中迎浪运动响应的频域解模型.将计算值和试验值进行了比较,结果吻合较好.%The majority weight of a planing craft is supported mainly by the hydrodynamic lift when its moving at a high speed, so the conventional motion prediction of the displacement ships is not applicable. A new theoretical method considering the influence of hydrodynamic lift is presented, which is used to compute the attitude of a prismatic planning craft in calm water and the responses in waves. Based on a semi-empirical formula, effect of the hydrodynamic lift on hydrodynamic coefficients is discussed, and a model for frequency domain solution is established for the motion simulation of the prismatic planing craft in regular head waves. The comparison between the numerical results and experimental data provides evidence that support the study.