A Novel Apparatus for Simulating Oceanic Turbulence in the Laboratory

P.I.韦伯斯特，唐纳德(佐治亚理工学院)提案#：0219519 PI提议开发一种新的设备来模拟实验室中的海洋湍流。拟议的工作是一年的努力，以完成设备的设计、建造和验证。由于各向同性更大、均匀性更好、简单性更高、可控性更强、可运输性更强、成本更低，所提出的设备优于传统的设计，如栅极振荡器。该系统由一个立方体有机玻璃盒子组成，每个角落都有一个执行器。每个致动器交替地迫使流体从箱壁上的一个小孔中出来，并将流体吸入箱壁中的一个小孔。这一作用导致从每个角落发出的湍流脉冲射流指向盒子中心；八个致动器的净结果是盒子中心周围的体积中高度各向同性和均匀的湍流区域。该系统是基于以前为气体使用而建造的装置。一旦得到验证，该系统将在物理和生物海洋学以及基础流体力学的研究中有广泛的应用。

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.