A Novel Apparatus for Simulating Oceanic Turbulence in the Laboratory

P.I. Webster, Donald （Georgia Tech）提案号：0219519 P.I.提议开发一种新的仪器来模拟实验室中的海洋湍流。这项工作需要一年的时间来完成设备的设计、建造和验证。所提出的设备优于传统设计，如电网振荡罐，因为其各向同性更大，均匀性更好，更简单，可控性更强，可运输性更强，成本更低。该系统由一个立方体有机玻璃盒子组成，每个角落都有一个驱动器。每个执行器交替地将流体挤出，并将流体吸入盒壁上的小孔中。这一作用产生了一股湍流脉冲射流，从每一个角都指向盒子中心；八个致动器的净结果是一个高度各向同性和均匀的紊流区域在盒中心周围的体积。这个系统是在以前为使用气体而建造的装置的基础上研制的。该系统一经验证，将在物理和生物海洋学以及基础流体力学的研究中具有广泛的应用前景。

P.I. Webster, Donald (Georgia Tech) Proposal #: 0219519The PIs propose to develop a new apparatus to simulate oceanic turbulence in the laboratory. The work proposed is a one-year effort to complete the design, construct, and validate the apparatus. The proposed equipment is superior to traditional designs, such as grid-oscillating tanks, because of greater isotropy, improved homogeneity, increased simplicity, increased controllability, increased transportability, and reduced cost. The system consists of a cubic Plexiglas box with an actuator located at each corner. Each actuator alternatively forces fluid out of and draws fluid into a small hole in the box wall. This action induces a turbulent pulsed jet originating from each corner aimed at the box center; the net result of the eight actuators is a highly isotropic and homogeneous turbulent region in the volume surrounding the box center. This system is based on a previous apparatus constructed for use with gases. Once validated, the system will have broad application for research in physical and biological oceanography as well as fundamental fluid mechanics.