- Speaker: Prof. Daesik Kim (Gangneung-Wonju National University, Korea)
Topic: Combustion Technology of Hydrogen Gas Turbine for Power Generation and Development Status in Korea
Abstract of Speech:
Gas turbines for power generation are moving very quickly to convert to technology that uses hydrogen instead of LNG. Compared to other renewable energy sources, hydrogen turbines are a very realistic power generation technology in that they can implement carbon neutrality while utilizing existing LNG power generation infrastructure. When hydrogen is used as a fuel, basic combustion characteristics such as flashback, NOx, and combustion instability are completely changed from existing LNG, requiring a careful design process. In this lecture, combustion technologies for the development of hydrogen turbines will be introduced. In addition, the current status of hydrogen turbine development in Korea and Korea’s R&D roadmap will be summarized.
Speaker Short Bio:
Dr. Daesik Kim is currently a professor of Dept. of Mechanical Eng. at Gangneung-Wonju National University. He earned his Bachelor/Master/Ph.D from Hanyang University in Korea, and worked as a postdoctoral research staff at Penn-State University in USA and as a senior researcher at Samsung Techwin in Korea. His research interests include “Gas turbine combusor development”, “Combustion instability”, and “Hydrogen power system”. He is a director of many professional societies in the gas turbine field, including ILASS-Korea, Korean combination, and Korean Propulsion. He also serves as a chairman of the Korean government’s R&D roadmap and planning for gas turbine development.
- Speaker: Prof. Xuesong Li (Shanghai Jiao Tong University, Mainland China)
Topic:
Spray Atomization with Two-phase Internal Flows
Abstract of Speech:
Sprays with liquid-gas two-phase internal flows, such as emulsion, effervescent, cavitating, and flash boiling sprays, are receiving notable attention for the emerging need of utilizing low-carbon fuels and improving atomization with moderate injection pressures. Although functioning differently, it is common to use liquid-phase atomization theory to describe and analyze two-phase atomizations, which could be inaccurate both in fundamental mechanisms and practical predictions. This presentation aims to provide a perspective on unifying the mentioned two-phase sprays in the aspects of internal flow patterns, primary breakup mechanisms, penetration characteristics, and combustion behaviors with a focus on flash boiling atomization. Various measurement techniques, such as SLIPI-LIEF-Mie planar drop sizing, optical nozzle diagnostics, and LIEF liquid phase detection methods that designed particularly for phase-changing spray diagnostics are incorporated to demonstrate the unique features of two-phase sprays.
Speaker Short Bio:
Dr. Xuesong Li is currently an Associate Professor at the School of Mechanical Engineering, Shanghai Jiao Tong University. He graduated with his Ph.D. from Virginia Tech (US) in 2014 and worked at the University of Minnesota (US) as a postdoc associate until 2017. His research expertise includes laser diagnostics, spray atomizations, and deep learning algorithms. Particularly, he involves heavily in the field of flash boiling atomization and combustion. He has published more than 80 SCI journal papers with a considerable number on flash boiling atomization. He is the PI for two NSF-China projects and several industrial projects on spray atomizations. He currently served as an associate editor for ASME-GTP (gas turbine and power), editorial assistant for the International Journal of Powerchain, and board member for ILASS-Asia 2023-2024. He also serves as the Local Conference Chair for ICLASS 2024.
- Speaker: Prof. Nobuyuki Kawahara (Okayama University, Japan)
Topic:
Droplet diameter and axial velocity measurements near a nozzle exit of an automotive fuel injector using PDA
Abstract of Speech:
I will present the droplet diameter measurement near a nozzle exit of an automotive fuel injector using Phase Doppler anemometer (PDA). When fuel is injected from a nozzle, it forms a liquid column, a liquid ligament, and then breaks up into droplets. Near the nozzle exit, experimental investigations of atomization process were restricted due to very high-speed and very dense spray region phenomena. Droplet diameter distribution is useful for numerical simulation. Droplet diameter and axial velocity in spray formed by one hole of the automotive fuel injector were measured with HiDense PDA system to investigate atomization characteristics near the nozzle exit of the automotive fuel injector.
Speaker Short Bio:
Professor
Faculty of Environmental, Life, Natural Science and Technology
Okayama University
President of ILASS-Asia (2021-2022)
- Speaker: Prof. Ming-Yeng Lin (National Cheng Kung University, Taiwan China)
Topic:
Abstract of Speech:
Speaker Short Bio:
- Speaker: Prof. Shamit Bakshi (Indian Institute of Technology Madras, India)
Topic:
Some observations on droplet processes
Abstract of Speech:
Processes like droplet evaporation, droplet impact onto surfaces and subsequent film formation, droplet breakup etc. form the building blocks to the understanding of spray dynamics in varied applications. In this talk, some results will be presented to elucidate the complexities involved in seemingly simple and solved problems on single droplet evaporation and single droplet impact onto surfaces. Based on the ongoing research in our laboratory, some ideas will be presented to find solutions to these problems in a simplified framework.
Speaker Short Bio:
Dr. Shamit Bakshi is presently a Professor in the Department of Mechanical Engineering of IIT Madras. He received his PhD from the Indian Institute of Science (IISc), Bangalore in 2004. He works in the area of droplets and sprays with an effort to understand the thermo-fluid dynamic processes involved in it. His research spans over processes like droplet and film evaporation, droplet impact onto surfaces, spray atomization for engines and gas-atomization of molten metal sprays for powder production. Dr. Bakshi has guided around 12 PhD and several masters students. He has published several journal articles with his students and collaborators. He closely works with industries through research projects. He is a recipient of Alexander von Humboldt fellowship. He is closely associated with ILASS-Asia and was in the organizing team of ILASS-Asia held in Chennai.