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UID:0-7141@eng.ufl.edu
DTSTART;TZID=America/New_York:20250130T124500
DTEND;TZID=America/New_York:20250130T134500
DTSTAMP:20251201T210443Z
URL:https://www.eng.ufl.edu/news-events/events/mae-seminar-cryogenic-flow-
 boiling-physics-in-terrestrial-partial-and-microgravity-conditions/
SUMMARY:MAE Seminar - Cryogenic Flow Boiling Physics in Terrestrial\, Parti
 al\, and Microgravity Conditions
DESCRIPTION:MAE Seminar - Cryogenic Flow Boiling Physics in Terrestrial\, P
 artial\, and Microgravity Conditions\n\nDear Undergraduate and Graduate St
 udents\, Faculty\, and Staff\,\nYou are invited! UF Department of Mechanic
 al and Aerospace Engineering's Seminar Series\nThis is a perfect opportuni
 ty to enjoy some coffee\, cookies\, and captivating talks! These sessions 
 feature amazing guest speakers\, from academic trailblazers and industry m
 overs to our very own faculty candidates showing off their expertise and f
 resh perspectives.\nCome for the treats\, stay for the engaging discussion
 s\, and connect with fellow MAE enthusiasts. Everyone is welcome!\n\nJanua
 ry 30\, 2025\, at 12:50pm\, Location: MAE-A 303\n\nSunjae Kim\nPh.D. Candi
 date\nDepartment of Mechanical Engineering\nPurdue University\n\nAbstract\
 nWith the growing interest in long-duration space exploration missions\, c
 ryogenic fluid management technologies involving two-phase flow and heat t
 ransfer are in high demand to successfully procure strategic in-space arch
 itectures such as on-orbit fuel depots\, in-space refueling system\, and n
 uclear thermal propulsion. However\, the unique and extreme thermal proper
 ties of cryogenic fluids present distinct challenges\, as their thermal-fl
 uid behavior deviates significantly from that of conventional room-tempera
 ture fluids. In particular\, the fundamental physics of cryogenic flow boi
 ling under reduced or partial gravity remain poorly understood\, posing a 
 significant barrier to the application of these technologies for space app
 lications. In order to experimentally investigate the cryogenic flow boili
 ng physics under reduced and partial gravity environment\, a parabolic fli
 ght rig was designed and constructed. Between 2022 and 2024\, three flight
  campaigns were carried out\, yielding a total of 270 parabolas. These eff
 orts successfully produced the world’s first microgravity cryogenic data
 base. In this talk\, I will discuss the gravitational effects on cryogenic
  two-phase flow patterns and interfacial behaviors\, using high-speed vide
 os and images obtained from the parabolic flight testing. Taking a step fu
 rther\, I will also explore the impact of reduced and partial gravity on t
 wo essential thermal design parameters: (a) heat transfer coefficients and
  (b) critical heat flux. I will conclude my talk by presenting new design 
 correlations and multiphase computational fluid dynamics models developed 
 based on the microgravity cryogenic database\, illustrating their real-lif
 e applications with concrete examples.\n\nBiography\nSunjae Kim is a Ph.D.
  candidate in Mechanical Engineering at Purdue University. His research fo
 cuses on understanding the effects of gravity on multiphase thermal-hydrau
 lic characteristics\, with a particular emphasis on cryogenic flow boiling
  physics. His primary goal is to leverage multiphase fluid-thermal science
  to innovate in-space thermal management systems. Prior to his doctoral st
 udies\, he worked as a Research Engineer at the Agency for Defense Develop
 ment\, a national lab in South Korea\, where he focused on developing adva
 nced thermodynamic systems for naval defense applications. He has been hon
 ored with several professional awards and academic fellowships\, including
  Gold Prize Winner of 4th HVAC Competition from SAREK in 2016\, as well as
  the Frederick N. Andrews Fellowship in 2020 and Bilsland Dissertation Fel
 lowship in 2024 at Purdue University.\n\nMAE Faculty Host: Youngsup Song
CATEGORIES:Seminars
LOCATION:MAE-A Room 303\, 939 Sweetwater Drive\, Gainesville\, FL\, 32611\,
  United States
GEO:29.643814;-82.34865
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=939 Sweetwater Drive\, Gain
 esville\, FL\, 32611\, United States;X-APPLE-RADIUS=100;X-TITLE=MAE-A Room
  303:geo:29.643814,-82.34865
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