In this study, magnetic resonance imaging (MRI), a noninvasive medical diagnostic imaging technique, was evaluated as a noncontact measurement method for fluid machinery. In this report, various simple flow fields are investigated, and a labeled water mass is tracked and visualized in two-dimensional images by the time–spatial labeling inversion pulse (time-SLIP) method. In this article, steady and pulsating pipe flows in a straight tube and in abruptly contracting and expanding channels were tested and compared with particle image velocimetry measurements or numerical simulations to evaluate their validity. In addition, as feasibility test, a rotating water turbine and a fluidic diode with a strong swirling flow were tested to estimate this method’s applicability to fluid machines. The results indicate that the time-SLIP method of tracking labeled water mass is sufficiently accurate for use in simple fluid machinery with slow flows.
Flow Visualization of Pipe Flows Obtained by MR Imaginary
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Hosotani, K, Ono, A, Takeuchi, K, Hashiguchi, Y, & Nagahata, T. "Flow Visualization of Pipe Flows Obtained by MR Imaginary." Proceedings of the ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. Volume 2A: Fora, Part 2. Seoul, South Korea. July 26–31, 2015. V02AT10A007. ASME. https://doi.org/10.1115/AJKFluids2015-10591
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