Research on the sampling performance of a new bionic gravity sampler  

作　　者：Yongqiang GE Jiamin HE Jin GUO Peihao ZhANG Hao WANG Ziqiang REN Xiaoling LE Ying WANG Yuhong WANG Jiawang CHEN 

机构地区：[1]Ocean College,Zhejiang University,Zhoushan 316021,China [2]Hainan Institute,Zhejiang University,Sanya 572025,China [3]The Engineering Research Center of Oceanic Sensing Technology and Equipment,Ministry of Education,Zhoushan 316021,China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2023年第8期692-709,共18页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：the Finance Science and Technology Project of Hainan Province(No.ZDKJ202019);the National Natural Science Foundation of China(No.41976055).

摘　　要：Gravity sampling is of vital importance for sampling seabed sediments and understanding submarine sedimentary environments and resources.In this study,a new bionic sampler tube(BST)with non-smooth surface for low-disturbance and rapid sampling is presented.The BST with depressions and swellings on its surface was designed on the model of the non-smooth surface of the dung beetle.Sufficient theoretical calculations,numerical simulations,and experimental tests were carried out to study its sampling performance.The penetration depth,sample length,and frictional drag of the sampler tube were calculated.The finite element model and the coupled Eulerian-Lagrangian(CEL)method were used to analyze and compare its sampling performance.Laboratory and field gravity sampling tests were conducted and the results demonstrated the advantages of the BST in improving sampling performance and in reducing adhesion and drag.

关 键 词：Deep-sea gravity sampling Bionic sampler tube(BST) Non-smooth surface Sampling performance Drag reduction 

分 类 号：G353.1[文化科学—情报学]