镶嵌式仿生耦合功能表面流体介质控制机制研究  

Fluid Control Mechanism of Mosaic Bionic Coupling Functional Surface

作　　者：田丽梅[1] 王银慈[1] 高梽桦 商震[2] 任露泉[1] 

机构地区：[1]吉林大学工程仿生教育部重点实验室,长春130025 [2]吉林大学汽车工程学院,长春130025

出　　处：《农业机械学报》2014年第6期324-328,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金青年科学基金资助项目(51105168;51205160);国土资源部公益性行业科研专项经费资助项目(201011082-06-2);吉林省高技术产业化示范(推进)资助项目(jfggj20111084);长春市重大科技攻关专项资助项目(13KG33)

摘　　要：模拟海豚镶嵌式皮肤结构,设计一种仿生耦合功能表面。利用ANSYS-Workbench软件对镶嵌式仿生耦合功能表面进行双向流固耦合计算,流体计算采用CFX下的标准k-ε湍流模型,固体计算采用Transient structural。模拟结果表明,耦合功能表面湍动能、表面速度明显降低,表面柔性材料产生位移变形。模拟结果表明,表面柔性材料通过变形与基底刚性材料耦合,通过对流体介质的顺应实现对流体介质的控制;通过表面材料的弹性变形吸收部分能量,有效降低了流体介质的湍动能,避免了流固交界面能量过分交换而带来的能量损失。Dolphin＇ s special mosaic skin structure has characteristic of drag reduction. Imitating this special structures, a kind of bionic eoupling functional surface was designed. Two-way fluid-solid coupling simulation was carried out on the mosaic bionic coupling functional surface using ANSYS- Workbench software, while the fluid calculation used the standard turbulence model, and the solid calculation used transient structural. The simulation result showed that the turbulent kinetic energy and the surface speed of the coupling functional surface were significantly reduced, and the flexible material produced displacement deformation. The above simulation result indicated, that the flexible material of surface coupled with non-smooth structures of substrate through conforming fluid medium to achieve the control purpose. The elastic deformation of surface material absorbed part of energy, and effectively reduced the turbulent kinetic energy of the fluid medium, to avoid the energy loss caused by excessive exchange between the fluid-solid interface.

关 键 词：仿生耦合功能表面 镶嵌式 流体介质控制机制 

分 类 号：TB17[生物学—生物工程]