Mechanical Engineering Graduate Seminar: Jiarong Hong

Feb 28, 2019

03:30 PM - 04:20 PM

Seamans Center, 3505

103 South Capitol Street, Iowa City, IA 52240

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Title: A Path towards Innovative Flow Field Imaging

Presented by Dr. Jiarong Hong, Ph.D.

Benjamin Mayhugh Associate Professor & McKnight Land-Grant Professor

University of Minnesota

Abstract: Scientific discoveries in the modern era have been largely driven by the advancement of observation and measurement tools. In this presentation, I will illustrate the implementation of such tool-driven methodology in the context of fluid mechanics with three examples. As the first example, I will describe the development of super-large-scale flow visualization and particle image velocimetry (PIV) at a scale on the order of 100 m, using natural snowflakes as tracers, to probe into the complex flow phenomena in the near wake of a 2.5 MW wind turbine. In the second case, we advance both the numerical reconstruction and hardware design of digital inline holography for high-resolution 3D flow measurements over a broad range of applications with a compact setup and at significantly lower cost compared to commercialized 3D flow diagnostic tools. The last example showcases our ability to apply PIV across liquid-gas interface to examine the internal gas movement inside a free standing cavity generated from ventilation. The motivation, the challenges, the technical details as well as the scientific outcomes and prospects of each case of tool development will be provided. Through these examples, I will demonstrate such tool-driven approach not only enables specific scientific questions to be addressed, but also opens up new opportunities and areas for research in the field of fluid mechanics and beyond.


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Individuals with disabilities are encouraged to attend all University of Iowa–sponsored events. If you are a person with a disability who requires a reasonable accommodation in order to participate in this program, please contact in advance at