Computational Fluid Dynamics (CFD) for Turbomachinery Design
This course is based on the unique synergy of Concepts NREC, with many years’ experience in the design of all types of turbomachines, and Fluent, a leading provider of high-end CFD solutions. These complementary perspectives have been brought together to provide a course that is focused on how modern CFD tools can be properly and effectively used in turbomachine design and analysis.
On day one, CFD fundamentals will be reviewed along with critical concepts that must be understood when running CFD on a turbomachinery problem. Some recent trends on CFD use will also be presented.
The focus of day two is on the integration of CFD into the design and development process. The instructor’s experience of successes and failures with CFD are presented. It is important for engineers to understand where CFD can really help and where it should not be relied upon without confirmatory studies. In some cases CFD may be a cost-effective alternative to experimental testing, but as in design, it must be used with caution. The interaction between CFD analysis and laboratory studies is considered in depth.
On day three, the focus will shift to advanced topics in CFD. Examples will be presented showing how CFD can solve very complex problems such as acoustics, multiphase flow including wet steam and cavitation, real fluid properties, turbulence, and meshing of complex geometry.
Participants earn 1.8 Continuing Education Units (CEUs).
OUTLINE
DAY ONE - Professor William Dawes, Cambridge
University
CFD Fundamentals
- Equations, approximations
- Turbulence models
- Advantages/Limitations
Turbomachinery CFD Fundamentals
- Throughflow, blade to blade and full 3D models
- Unsteady versus steady flow
- Methods to handle rotating/stationary interfaces
- Pre- and post-processing including CAD interfacing
- Trends, modeling real geometry, optimization, integration
Applied Turbomachinery CFD
-
Commercially productive CFD application
- The design process
- Levels of design consideration and requisite detail
- Speed, resolution, pre-processing, post –processing, evaluation
- Choosing the next design iteration
- Direct vs. Inverse methods
- Analysis studies
- Purpose of the studies; expectations
- Examples of detailed analytical evaluations
- Laboratory investigations – an introduction
- Successes and failures; case histories
- The design process
- Secondary flow and heat transfer
- Treating cavities, cooling and balance flow elements
- Turbine blade cooling systems
- Using CFD and Lab data together
- When to use each
- How to combine
- Comparisons to data
- Synergy between the two
DAY THREE - Dr. Frank Kelecy, Fluent,
Inc.
Advanced CFD Topics
- Overview of Modeling Procedures for Rotating Machinery
- Preprocessing/mesh generation
- Single reference frame modeling
- Multiple reference frames
- Mixing plane models
- Sliding mesh models
- Cavitation
- Real fluid modeling (non-ideal gases)
- Multiphase flow including wet steam
- Acoustics
- Generalized moving/deforming mesh models
- Examples
INSTRUCTORS
Professor Dawes is the Francis Mond Professor of Aeronautical Engineering at Cambridge University. After completing a PhD at Cambridge he worked for the Central Electricity Generating Board at Marchwood Laboratories where he developed numerical methods and worked on a number of steam turbine operational problems. Since returning to Cambridge in 1984 to teach Computational Fluid Dynamics he has worked on a range of numerical methods aimed at predicting fully 3D viscous flow in turbomachines, especially in axial and centrifugal compressors. His structured blade-to-blade Navier-Stokes code (BT0B3d) has become an industry standard design tool and he has now developed a state-of-the-art adaptive unstructured version of this (NEWT). Nearly 50 organisations worldwide have licensed the software. More recently this code has been extended in collaboration with Drs Stewart Cant and Mark Savill to handle combustion for predicting lean pre-mixed combustor flows and confined explosion flows. Great emphasis has been placed on dealing with real-world complex 3D engineering flows and methods have been developed to cover the whole CFD process from CAD to mesh to flow simulation. Professor Dawes sits on a number of governmental and industrial advisory boards and acts as consultant to a range of aerospace industries.
Dr. David Japikse, Concepts NREC
Dr. David Japikse received his master’s and doctoral degrees at Purdue University. He founded Concepts ETI in 1980 and guided the company as president until 2000 when he led the acquisition of NREC’s consulting and engineering software business. He has been responsible for many activities in centrifugal pump design, consulting, and research, and has developed a number of innovative design techniques. Dr. Japikse has also published extensively and teaches regularly to engineers. He has received many awards including the James Harry Potter Gold Medal from ASME for “…innovative, pioneering contributions in the field of thermodynamics as applied to turbomachinery design.” He is a Fellow in the ASME and a member of the National Academy of Engineering.
Dr. Frank Kelecy, Fluent, Inc.
Dr. Frank Kelecy received his BSME from Clemson University in 1983 and an MSME from Purdue University in 1986. He earned his PhD in Mechanical Engineering at Iowa State University in 1993. With a strong focus on computational fluid dynamics, his dissertation topic dealt with the development of numerical methods for calculating viscous free surface flows. Mr. Kelecy joined Fluent Inc. in 1995 as a Technical Support Engineer, and to date has provided support and training services to clients in the aerospace, automotive, HVAC, and turbomachinery industries. In 2000, Mr. Kelecy became a CFD Application Specialist for turbomachinery applications, providing company wide support for all turbomachinery-related activities within Fluent Inc.
LOCATION
The course will be held at our corporate headquarters in White River Junction, VT. White River Junction is served by the Lebanon Municipal Airport, Lebanon, NH, eight miles away, and is approximately a 1½ hour drive from Burlington International Airport, S. Burlington, VT, and Manchester Airport, Manchester, NH. Wilder is a 2½ hour drive from Logan International Airport, Boston, MA, and Bradley International Airport, Hartford, CT.
HOTEL
A block of rooms has been reserved at the Comfort Inn in White River Junction. The course takes place during peak foilage season, so please reserve early to ensure room availability. Room reservations must be made no later than September 20.
Comfort Inn
White River Jct., VT
802-295-3051
802-295-5990 Fax
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