F27 - Unsteady flows in Turbomachinery

Organizers: K. Miyagawa, Y-D. Choi & X-W Luo

Kazuyoshi Miyagawa is working as a professor at Department of Applied Mechanics and Aerospace Engineering of WASEDA University, Tokyo, Japan. He received his B.S. and M.S. degrees from WASEDA University, and Dr.Eng. from Osaka University, Japan. He is interested in research and development of turbomachinery such as hydro turbine, pump, compressor based on understanding of internal flow using CFD and experimental results.

Young-Do Choi received his B.S. and M.S. degrees from Korea Maritime University, and his Dr.Eng. from Yokohama National University, Japan. Since 2009, he has been a professor at Department of Mechanical Engineering of Mokpo National University, Korea. His research interests include fluid machinery and new & renewable energy.

Xian-Wu Luo got the bachelor and master degree from Tsinghua University, and PH.D. from Kyushu Institute of Technology. He is now an associate professor at the Department of Thermal Engineering, Tsinghua University. His research interests are unsteady cavitating flows in hydraulic machinery, design optimization of hydraulic machines, blood pumps, etc.


The Forum "unsteady flows in turbomachinery" of ISROMAC16 mainly refers to unsteady flows in all kinds of turbomachinery such as compressors, pumps, hydro turbines, wind turbines, turbochargers and so on. Internal flows in such turbomachinery has to be considered as unsteady flows for investigation of loss mechanism, flow induced vibration, flow instability, cavitation. The purpose of this forum is to have common basic knowledge concerning unsteady flows among these kinds of turbomachinery for better understanding of the complex phenomena. Many computational and experimental techniques are used to clarify unsteady flows in turbomachinery, but it is important that appropriate numerical model and experimental instrument has to be prepared to grasp a complicated unsteady flows. These technologies and common understanding should be discussed in this forum.
The "Unsteady flows in turbomachinery" Forum of the ISROMAC16 Conference aims at providing opportunity for an exchange of studies as for recent research involving (1) behavior influenced by unsteady flows (2) experimental approaches (3) numerical approaches (4) design and optimization under unsteady flows (4) flow induced vibration. Any topics related unsteady flows in turbomachinery are welcomed.

Non-exhaustive list of suggested Topics:

- Flow instability such as rotating stall, surge

- Performance instability due to cavitation surge, rotating cavitation

- Positive slope in Q-P or Q-H characteristics

- Rotor stator interaction

- Loss mechanism

- Flow induced vibration, vortex induced vibration

- Operation in pulsating flows like turbocharger, artificial heart pump

- Unsteady computations

- Unsteady measurements