May 13 2015 03:00 PM
May 13 2015 04:00 PM
On May 13, 2015, CCRC organized a seminar by Dr. Suk Ho Chung on the topic "Microgravity Environment and Jet Flames" on May 13, 2015, 3:00 to 4:00 p.m. at building 5, level 5, room no: 5209.
condition could provide ideal environment for various research areas including
combustion science, fluid physics, material science, fundamental physics and
biotechnology. Especially, in combustion area, the absence of buoyancy provides
idealized condition. In this seminar, various microgravity facilities are
introduced, including drop shaft, parabolic flight, sounding rocket, space
shuttle, and international space station (ISS).
experiments on jet flames will be discussed. The propagation speed of
tribrachial edge flame of propane fuel was measured under microgravity
condition, since propane is heavier than air, buoyancy effect under normal
gravity condition results in errors in the measurement. The mechanism of
oscillating lifted nonpremixed flames was investigated under microgravity condition
utilizing 490 m drop shaft with 10 s microgravity condition. The oscillation
mechaniem under normal gravity was found due to buoyancy-driven instability.
Such oscillation behavior was further studied under partial gravity conditions
utilizing parabolic flights. Future needs in microgravity tests will be
Dr. Suk Ho Chung is
Named Professor of Mechanical Engineering at King Abdullah University of
Science and Technology (KAUST) and served as the Founding Director of the Clean
Combustion Research Center (CCRC) during 2009-2014. Previously, he was a
professor in the School of Mechanical and Aerospace Engineering at Seoul
National University in Korea (1984-2009). He earned his doctoral
(1983) and master's degrees in Mechanical Engineering from Northwestern
University, Illinois, in the United States. He holds a bachelor's degree (1976)
in Mechanical Engineering from Seoul National University in Korea. His research
interests include flame structure, flame stabilization, soot formation, electric
field assisted combustion and flame synthesis.