Equip and Establish the Laboratory of Experimental Fluid Dynamics at SDSU with Full Range Measurement and Analysis Capabilities in Particle Image Velocimetry
Abstract
In the field of experimental fluid dynamics, over the past 36 years since its inception in 1984 (Adrian, 1984, Appl. Opt. 23, 1690Ð1691), Particle Image Velocimetry (PIV) has gradually evolved into a comprehensive suite of powerful optics-based flow velocity measurement techniques capable of measuring instantaneous velocity distributions in flow fields either within a planar or a volumetric space in a non-intrusive fashion. With the flow velocity data accurately measured by using PIV, validation and improvement on flow simulations and theoretical models have been greatly facilitated and new insights into the flow physics about a variety of complex flow fields have been made possible. Because of the versatile flow diagnosis capabilities and the enhanced productivity brought by PIV, possessing a full range of PIV diagnosis toolkit is becoming a sought-after practice for world class research labs in fluid dynamics in universities across the nation and around the world. A state-of-the-art PIV measurement toolkit typically includes a high-energy high-repetition-rate dual head laser, one or several high speed camera(s) and the corresponding software suites for PIV analysis. Typical PIV variations include planar PIV, stereo PIV and tomographic PIV configurations, which require one, two and four camera(s), respectively, involved in their corresponding PIV setups. At the Laboratory of Experimental Fluid Dynamics at San Diego State University (SDSU), we currently have one set of tomographic PIV and the corresponding tomo-PIV analysis software suite. However, because of the limited funding available for those equipment acquisition in 2014, the laser currently in our lab has only one single laser head. This single head laser is the bottle-neck constraint that makes the widely adopted laser pulse straddling arrangement for high flow velocity measurement unachievable with the current setup. Therefore, to accommodate high flow velocity measurement, dual head laser is needed. In addition, the camera image acquisition rate is also low in comparison with the state-of-the-art cameras available on the market. Moreover, the PIV software package in the lab consists only the basic tomographic PIV suite, not including the planar PIV and the stereo PIV analysis capabilities. Therefore, in order to (a) enhance the research and education programs and capabilities in experimental fluid dynamics which are critical to the national security functions of DoD in general and the U.S. Navy in particular; (b) enhance the capacity of SDSU to participate in DoD research programs and activities; and (c) increase the number of graduates, including underrepresented minorities, in participating in research in fluid dynamics and aerodynamics, we propose to acquire a comprehensive state-of-the-art of PIV hardware and software toolkit, which consists of a high energy high repetition rate dual head laser, four high performance high speed cameras and the corresponding PIV analysis software suites so as to be able to form versatile PIV diagnosis capacities that enable the state-of-the-art planar, stereo and tomographic PIV flow field measurement capabilities at SDSU. This comprehensive PIV image acquisition and data analysis toolkit will be able to satisfy a variety of research application requirements with a full velocity range coverage varying from low speed incompressible flows to supersonic flows. Detailed system component specifications, budget requirements, targeted research projects and anticipated outcomes of the proposed new acquisition are discussed in the proposal.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 25, 2021
- Source ID
- W911NF2110158
Entities
People
- Xiaofeng Liu
Organizations
- Army Contracting Command
- Office of the Secretary of Defense
- Salk Institute for Biological Studies