摘要
针对低速水下机器人模型试验测取水动力特性的需求,设计一款满足相似理论要求的室内小型低速开口式直流水洞;利用Fluent软件仿真得到试验段各截面速度分布云图,选出满足试验条件的截面范围;搭建试验平台并进行流场标定,结果表明稳流段速度达到2 m/s,稳流段的流场均匀且稳定,范围大于200 mm×68 mm×300 mm,满足阻塞率不大于25%、试验段长度通常是模型长度3倍的要求,验证了仿真结果的正确性且满足预期水下机器人模型试验的要求。此试验系统适用于速度不大于2 m/s,模型长不大于200 mm,模型来流方向的横截面积不大于5000 mm^(2)的试验条件。
Aiming at the requirement of measuring hydrodynamic characteristics for low speed underwater vehicle,a small indoor low speed open water tunnel was designed which met the similar theoretical requirements.Fluent was used to calculate the velocity distribution of each cross section for the test section,and the cross section range that met the test conditions was selected.Finally,the test platform was built,and its flow field was calibrated.The result shows that the test steady section velocity reaches 2 m/s,meanwhile,the flow field is uniform and stable,and the range is larger than 200 mm×68 mm×300 mm,which conforms to the blocking rate is not more than 25%,the length of the test section is usually three times the length of the model.The correctness of the simulation results is verified and the expected test requirements for low velocity underwater vehicle model is met.This test system is suitable for experimental conditions:velocity is not more than 2 m/s,the model length is not more than 200 mm,and cross section area of flow direction is not more than 5000 mm^(2).
作者
张亮
纪胜军
李树珍
沈江洁
石磊
ZHANG Liang;JI Shengjun;LI Shuzhen;SHEN Jiangjie;SHI Lei(College of Mechanical and Electronic Engineering,Hebei Normal University of Science and Technology,Qinhuangdao Hebei 066004,China;School of Mechanical Engineering,Shandong Huayu University of Technology,Dezhou Shandong 253000,China;College of Marine Resources&Environment,Hebei Normal University of Science and Technology,Qinhuangdao Hebei 066004,China)
出处
《机床与液压》
北大核心
2024年第5期95-100,共6页
Machine Tool & Hydraulics
基金
河北省重点研发计划项目(20373302D)。
关键词
水下机器人
试验系统
水动力仿真
系统标定
underwater vehicle
test system
hydrodynamic simulation
calibration
