"Film Cooling Science & Technology for Gas Turbines Workshop"
Co-Sponsored by the von Karman Institute (VKI)

Sunday, June 13, 2010
Scottish Exhibition & Conference Center
Glasgow, Scotland

Overview and Objective
The objective of this Lecture Series is to present the state-of-the-art in both experimental knowledge and CFD-based computational predictions concerning gas turbine film cooling. The course will begin with an overview of turbine engine design practices and applications for film cooling, including related aspects of film cooling inspection, manufacturing, and repair. A significant portion of the course will be devoted to comprehensive reviews concerning the fundamentals of jet injection and mixing, the various key parametric effects and results for adiabatic effectiveness, heat transfer coefficients and discharge coefficients. The current and developing methods in computational predictions for film cooling will be presented, including steady and unsteady RANS modeling, turbulence model capabilities, and large eddy / detached eddy simulations.

How will participants benefit from attending this course?
Participants will gain an understanding of why film cooling is so important to turbine design, why it is difficult to employ efficiently, and the wealth and dearth of design information supporting the technology. Recommendations of best practices for modeling film cooling; advanced simulation issues such as modeling roughness, inlet turbulence etc.

After completing the course the participants should have an:

1. Understanding of the fundamentals, real limitations, and range of actual applied data.
2. Insight into why certain designs work and others do not; better focus for future designs; Enable development of film cooling designs to improve performance for new gas turbine engines.
3. Understanding of computational model abilities, limitations, and expectations/needs.
4. Improved understanding of best practices in simulating film cooling flows, and adopt these in the workplace.
5. Understanding of the techniques for simulating advanced features such as inlet turbulence, surface roughness, wake interactions, etc.

Who Should Attend
The course is aimed at applied thermal-fluid and CFD researchers as well as gas turbine engine designers. Industry design engineers interested in tools for improved design practices; new graduate students in the turbomachinery area. Attendee should have a working knowledge of gas turbine fundamentals and a BS Engineering.

Faculty

Sumanta Acharya is currently the L. R. Daniel Professor of Mechanical Engineering at Louisiana State University (LSU) and the Director of the Turbine Innovation and Energy Research (TIER) Center. He completed his PhD from the University of Minnesota in 1982, and joined LSU the same year. His primary interests are in aero-heat transfer problems applied to gas turbines. He is an expert in computational fluid dynamics, and has published nearly 150 journal papers and book chapters and presented nearly 200 conference papers. His research is currently funded by NSF, AFOSR, NASA, DOE, and the state of Louisiana.

Dr. Tony Arts is currently the Head of the Turbomachinery and Propulsion Department at VKI. He holds a Dr. Sciences Appliquées from the Université Catholique de Louvain, Belgium. His areas of research include:

• External convective heat transfer and aerodynamics in linear and annular turbine cascades
• Aero-thermal characteristics of film cooling
• Aero-thermal aspects of internal convection cooling
• Boundary layers
• Stator/rotor interaction and blade/wake interference in transonic turbines
• Fast response temperature and heat flux measurements
• Liquid crystal thermometry
• Design and improvement of testing facilities

The von Karman Institute is a non-profit international educational and scientific organization, hosting three departments (aeronautics and aerospace, environmental and applied fluid dynamics, and turbomachinery & propulsion).

Dr. David Bogard is a Professor and the John E. Kasch Fellow in Engineering in the Department of Mechanical Engineering at the University of Texas at Austin. He currently serves as the Associate Chair for Administration and Research for the department. Dr. Bogard is also a Fellow of the American Society of Mechanical Engineers. His research interests include turbulent boundary layer control and gas turbine cooling, with more than 120 refereed publications in these areas. Two of these papers were awarded the International Gas Turbine Institute, Heat Transfer Committee Outstanding Paper Award. Current research projects are sponsored by ONR, DOE, NASA, and Pratt & Whitney.

Dr. Ron Bunker is a Principal Engineer at the GE Global Research Center in Niskayuna, NY. He is an internationally recognized research engineer in the field of Gas Turbine Heat Transfer. He has been performing and directing research related to all aspects of turbine hot gas path heat transfer and cooling for the past 24 years. Dr. Bunker is a Fellow of the American Society of Mechanical Engineers, a Member of the Board of Directors of the International Gas Turbine Institute, and Associate Technical Editor for the Journal of Turbomachinery. Dr. Bunker has been awarded 48 US patents, with 30 more pending, all dealing with gas turbine and power technologies. Dr. Bunker is also the author of 90 technical publications and refereed papers, and more than 125 internal company reports.

Course Schedule:	Sunday, June 13 8:30 a.m. to 5:00 p.m.
Morning Session:
8:30 a.m. to 12:00 Noon	Turbine Film Cooling Design: uses, issues realities conservatisms limitations, and manufacturing Instructor: Ron Bunker, GE Global Research Center
	Fundamental Physics: basic flow field interaction Instructor: Tony Arts, VKI
12:00 p.m. – 1:00 p.m.	Group Lunch
Afternoon Session:
1:00 p.m. - 5:00 p.m.	Main Parameter Effects on: adiabatic effectiveness and heat transfer net heat flux; new geometries Instructor: David Bogard, University of Texas at Austin
	Computational Film Cooling Methods Using: RANS, URANS, LES, and DNS Instructor: Sumanta Acharya, Louisiana State University