The course is both a state-of-the-art review of the technology base for these machines and also a practical guide for designers. The range of application of centrifugal compressors is very wide, and their design and use is an important engineering industrial activity. Each area of application brings its own requirements to compressor design. Requirements of range, durability, and cost may compromise an efficient aerodynamic design, and must be recognized and accommodated in the design process. All these issues are addressed during the course.

The course begins with a thorough review of centrifugal compressor technology and one-dimensional design optimization. The level of confidence in stage analysis, using the best current data and models, is discussed and illustrated.

The design process is described in depth, including presentations of quasi-three-dimensional flow field calculations to predict loading levels, and 3D inviscid and viscous calculations for flow field prediction and design optimization. The use of CFD for compressor design optimization is discussed.

COURSE OUTLINE

• The foundation of compressor design and performance.
• Impeller flow physics: primary and secondary flow, diffusion, and recirculation.
• Diffuser flow physics
• Additional stage elements (volute, return channel, etc.).
• Stall and surge, and techniques for range extension including variable geometry.
• Design system organization.
• Design optimization procedures.
• 3D blade shapes and loading estimation.
• Flow field analysis using CFD.
• Laboratory instrumentation and procedures.
• Compressor development: measurement and evaluation.

WHO SHOULD ATTEND

• Engineers responsible for the design of centrifugal compressors.
• Field service and maintenance engineers who need to be familiar with centrifugal compressors and understand their operation, performance, and operating limits.
• Managers and sales personnel who need to speak the "language" of centrifugal compressors.
• Test engineers responsible for instrumenting and testing centrifugal compressors.
• Consultant engineers, including CFD specialists, working in turbomachinery.

COURSE MATERIALS

A copy of Centrifugal Compressor Design and Performance by Dr. David Japikse is included in the registration fee.

INSTRUCTORS

Dr. David Japikse
Dr. Japikse received his master's and doctoral degrees at Purdue University. He founded Concepts ETI, Inc. in 1980 and guided the company as president until 2000. He currently serves as Chairman of the Concepts NREC Board of Directors. He has been responsible for many centrifugal compressor designs, consulting and research activities, and has developed a number of innovative design techniques. He 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. Colin Osborne
Dr. Osborne was educated at Imperial College, MIT, and Cornell University. Dr. Osborne has been closely involved in turbomachinery research, design, and development since 1973. He joined Concepts NREC in 1989 as Vice President, where he was responsible for the aerodynamic design of compressors, pumps, and turbines, and for laboratory test work. He currently serves as President of European, African, and Middle Eastern Operations. He has published many papers, holds a number of patents on aerodynamic and rotordynamic aspects of turbomachinery, and teaches regularly at Concepts NREC courses and workshops.

GRADUATE COURSE CREDIT

Graduate credit may be earned for this course by qualified participants who register for course number ME 246 with the University of Vermont and complete the course and approved homework study. The course grade will appear on a University of Vermont transcript and may be transferred to other graduate programs in most recognized colleges and universities in the USA. Contact the Course Registrar at Concepts NREC for details.