CONFIRMED: Mechanical Engineering (MNE) Seminar by Dr. Han Hu
Mechanical Engineering (MNE) SEMINAR DATE: Friday, March 8, 2024 TIME: 2pm-3pm ZOOM: https://umassd.zoom.us/j/91640406955?pwd=eklBZWVDOXVDa2VwUFMra1kwNWhjdz09 (Contact hling1@umassd.edu or scunha@umassd.edu for Passcode) SPEAKER: Dr. Han Hu, Assistant Professor Mechanical Engineering, University of Arkansas TOPIC: Probing Boiling Heat Transfer with Multimodal Sensing and Data-Driven Modeling ABSTRACT: Boiling is an ultra-efficient heat dissipation process that is critical to the thermal management of power electronics, data center racks, nucleate reactors, and jet engines, among others. Nevertheless, boiling heat transfer is limited by a catastrophic point of failure known as the critical heat flux (CHF). While the power density of electronics doubles every four years, there are only very limited improvements in boiling CHF during the past decades and the state-of-the-art CHF is still two orders of magnitude lower than the kinetic limit. Further improvement of CHF will rely on the breakthrough in the fundamental understanding of the physical mechanism that triggers CHF. However, this mechanism is still unclear and controversial. The high dimensionality, stochasticity, and dynamicity of the boiling process have led to strong challenges in the experimental characterization and modeling of boiling CHF. This presentation will describe a coupled multimodal sensing and data-driven modeling platform to address these challenges. Synchronized multi-dimension, multi-resolution, multi-physics (acoustic, optical, and thermal) sensing will be coupled with data-driven modeling to enable transient heat flux quantification, full 3D L-V interface reconstruction, and high-dimensional feature fusion. BIO: Han Hu is an Assistant Professor in the Department of Mechanical Engineering at the University of Arkansas. Dr. Hu received his BS from the University of Science and Technology of China in 2011 and PhD from Drexel University in 2016. He did his postdoctoral research at Purdue University from 2016-2019 and joined the University of Arkansas in August 2019. His research centers on the development of high-performance cooling technologies for power electronics and advanced sensing technologies for electrical and thermal system monitoring and fault detection. His research is supported by NSF, NASA, and ASGC, as well as private companies such as Google and MathWorks. For more information please contact Dr. Hangjian Ling, MNE Seminar Coordinator (hling1@umassd.edu). All are welcome. Students taking MNE-500 are REQUIRED to attend! All other MNE BS and MS students are encouraged to attend. EAS students are also encouraged to attend.
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Mechanical Engineering Department
508.999.8492