超空泡航行体三相流动演化特性  

Evolution characteristics of the three-phase cavity flow around a ventilated vehicle

作　　者：王威 侯瀚程 何广华 杨豪 WANG Wei;HOU Hancheng;HE Guanghua;YANG Hao(School of Ocean Engineering, Harbin Institute of Technology, Weihai 264209, China;Shandong Institute of Shipbuilding Technology, Weihai 264209, China)

机构地区：[1]哈尔滨工业大学(威海)海洋工程学院,山东威海264209 [2]山东船舶技术研究院,山东威海264209

出　　处：《哈尔滨工程大学学报》2022年第1期48-54,共7页Journal of Harbin Engineering University

基　　金：中央高校基本科研业务费专项资金(HIT.NSRIF.202017);山东省泰山学者工程专项经费资助(tsqn201909172);山东省高等学校青创科技支持计划(2019KJN003).

摘　　要：为研究通气航行体的空泡三相流动演化特性,采用CFD仿真软件Fluent对超空泡航行体通气空泡替代自然空泡的复杂流动过程进行了三维数值模拟研究。本文基于RNG k-ε湍流模型和VOF多相流模型,建立通气超空泡航行体三相流动的数值计算模型,并进行收敛性验证,并通过相关实验与模拟结果进行对比验证本数值方法的有效性;数值模拟了航行体由自然超空泡向通气超空泡转化的复杂三相流动过程。给出了自然超空泡向通气超空泡演化过程中,空泡形态的演化特性和航行体流体动力的变化规律。本文给出了通气空化流动中三相演化的三维细节,可为空泡减阻领域的相关研究提供参考。To investigate the evolution characteristics of a three-phase cavity flow induced by a ventilated submerged vehicle,we conducted a three-dimensional numerical simulation study on the complex process of replacing the natural cavity with ventilated supercavity of a vehicle using the commercial computational fluid dynamics software FLUENT.First,a three-phase cavity flow numerical calculation model was established to investigate the complicated flow around a ventilated vehicle based on the renormalization group k-εturbulent model and the volume of fluid multiphase fluid model.This newly established numerical model was verified by comparing the numerical data of relevant experiments with published experimental data from sufficient convergence studies.Then,the complex three-flow process of transforming natural supercavity around a vehicle to ventilated supercavity was numerically simulated.Finally,the evolution law of the cavity shape and hydrodynamic characteristics of the vehicle from the natural supercavity to ventilated supercavity was given.This study innovatively shows a detailed three-phase evolution process of the cavity flow around a ventilated vehicle,which can provide references for cavity caries drug reduction.

关 键 词：航行体 通气超空泡 自然超空泡 空泡形态 流体动力 

分 类 号：O351.2[理学—流体力学] TJ630.1[理学—力学]