F7 - Internal Cooling Channel

Organizers: S. Ekkad & B. Cukurel

Dr. Srinath Ekkad is currently Associate Vice-president for Research, Commonwealth Professor of Aerospace Propulsion Systems; Director of Commonwealth Center for Aerospace Propulsion Systems (CCAPS); and Professor of Mechanical Engineering at Virginia Tech. His research areas include experimental heat transfer methods, enhanced heat transfer for turbine blade cooling, external surface heat transfer and film cooling for turbine blades, blade tip leakage flow and heat transfer, micro air vehicles, micro-channel heat exchangers, electronic cooling, and clean coal energy.

Dr. Beni Cukurel is a faculty member at Aerospace Engineering Department of Technion- Israel Institute of Technology. His scientific interests include novel thermal management methods, fundamental heat transfer, gas turbine component analysis, measurement technique development.

The thermal efficiency and specific power of the gas turbine is directly related to the turbine inlet temperature. The modern engines typically operate with turbine inlet temperatures beyond the melting point of the material. Different techniques are used to cope with this problem. In turbine cooling channels, depending on availability, a pressurized fluid is routed through various passages and is ultimately discharged into the external hot gas path, thereby extracting thermal energy from the airfoil based on internal forced convection. These serpentine passages are commonly equipped with repeated flow perturbators in order to enhance convective heat transfer by promoting turbulence, at a cost of a pressure drop penalty. In addition, to protect the outer layer of the turbine blade from beyond material limit gas temperatures, external film cooling is also commonly employed via bleeding holes connecting the internal passages to the exterior.
The internal cooling Forum of the ISROMAC16 conference is targeted to introducing the latest developments in research, development and engineering design. The forum topics include advances in applicable measurement techniques, rotating and stationary experimental facilities of varying complexity, advances in numerical methods, novel cooling technologies, simplified modeling which highlights the impact of buoyancy, rotation, solid conduction (conjugate interaction), metal/gas temperatures, and other effects.

Non-exhaustive list of suggested Topics:

- Measurement techniques

- Measurements in rotating / stationary experimental facilities of varying complexity

- Advances in numerical methods

- Active cooling technology

- Uniformity of internal cooling

- Micro cooling / Porous Media

- Internal / External Cooling Interaction

- Controlled and adaptable cooling

- Internal cooling system design

- Novel cooling technologies

- Design Methodologies

- Simplified modeling (buoyancy, rotation, solid conduction - conjugate interaction, metal/gas temperatures, and other effects)