SGER: Development of a Novel Fiber-Optic Vorticity Probe

这个来自EPSCoR州的SGER项目描述了一种光纤激光多普勒测速(LDV)的新方法。将开发一种LDV探测器来测量经典或量子流体中时间和空间分辨涡量矢量的一个分量。该项目将建造一个紧凑而坚固的光纤探头，由四组光纤和耦合器组成，可以同时测量流动中四个紧密间隔位置的不同速度分量。涡度探头将非常类似于商用光纤LDV探头，并具有所有优点。新方案将具有空间分辨率高、时间响应快和易于使用的重要附加优势。该探头将是非侵入性的，应该能够测量空间分辨率低至5 mm的流动涡量。该项目如果成功，可能会被商业化，并可能对湍流现象的研究产生重大影响。这个高风险、高回报的项目为学生提供了极好的培训机会，并涉及湍流物理领域的最先进仪器。%这个来自EPSCoR州的SGER项目将开发一种新的光纤技术来测量由于湍流运动而在流体中产生的涡量或涡流。该方法具有目前可用的光纤方法的所有优点，但另外还提供高空间分辨率、快速的时间响应和易用性。它是非侵入式的，能够测量空间分辨率低至5 mm的流动涡量。该项目如果成功，可能会被商业化，并可能对湍流现象的研究产生重大影响。这个高风险、高回报的项目为学生提供了极好的培训机会，并涉及湍流物理领域的最先进仪器。

9981285TongThis SGER project from an EPSCoR state describes a new approach to fiber-optic laser Doppler velocimetry (LDV). An LDV probe will be developed to measure one component of the time- and space-resolved vorticity vector in a classical or quantum fluid. The project will build a compact and robust fiber-optic probe consisting of four sets of optical fibers and couplers, which can simultaneously measure different velocity components of four closely spaced locations in the flow. The vorticity probe will be very much like commercial fiber-optic LDV probe and has all their advantages. The new scheme will have the important additional advantages of high spatial resolution, fast temporal response, and ease of use. The probe will be non intrusive and should be capable of measuring the flow vorticity with a spatial resolution down to 5 mm. The project, if successful, might be commercialized and could have a significant impact on the study of turbulence phenomena. The high-risk, high-payoff project offers excellent training opportunities for students and involves state-of-the-art instrumentation in the area of the physics of turbulence.%%%This SGER project from an EPSCoR state will develop a new fiber optic technique to measure the vorticity, or whirlpools, that arise in fluids because of turbulent motion. The approach has all the advantages of currently available fiber-optic methodology but in addition provides high spatial resolution, fast temporal response, and ease of use. It is non intrusive and capable of measuring the flow vorticity with a spatial resolution down to 5 mm. The project, if successful, might be commercialized and could have a significant impact on the study of turbulence phenomena. The high-risk, high-payoff project offers excellent training opportunities for students and involves state-of-the-art instrumentation in the area of the physics of turbulence.