"Rotordynamic Analysis of Centrifugal Compressors and API 617 Review"
Sponsored by Dresser-Rand

A one-day short course in conjunction with Turbo Expo 2007

Sunday, May 13, 2007 - Montreal, Canada

Fee: $500
Short Course fee includes lunch, refreshment breaks and course materials.

Click here to register!

Instructors
Dr. Edmund A. Memmott, Principal Rotor Dynamics Engineer, Dresser-Rand
Dr. Krish Ramesh, Senior Product Technology Engineer, Dresser-Rand

The course will provide a fundamental description of the rotor dynamics of centrifugal compressors and a history of the development of rotor dynamic capabilities in the context of the history of the dynamics paragraphs of API 617 from the 1st to the 7th editions. It will be grounded by a presentation of practical case studies with references to the open literature. It also will include descriptions of compressor design features such as tilt pad damper bearings, oil-film and tilt pad oil film seals, and toothed and hole pattern labyrinth seals and their effects on the rotor dynamics.

The purpose will be to provide an understanding of rotor dynamic principles, the dynamic paragraphs of API 617, and the effects of various parts in order to aid in the rotor dynamic evaluation of centrifugal compressors - for purchase, for reading lateral reports, for test stand evaluation, and for field trouble shooting.

Who Should Attend
The course is appropriate for rotating equipment specialists, mechanical vibration analysts, and end-users of centrifugal compressors.

Course Highlights

• Fundamental rotordynamic behavior of centrifugal compressors
• The historical development of rotordynamic analytical capabilities
• The dynamics paragraphs of API 617 from the 1st to the 7th edition
• Practical case studies
• Compressor design features and their effects on rotor dynamics

Instructor Resumes

Dr. Edmund A. Memmott

Edmund A. Memmott is a Principal Rotor Dynamics Engineer at Dresser-Rand in Olean, New York, where he has been since 1973. Dr. Memmott has been involved with the rotor dynamic analysis and design of a wide range of centrifugal compressor and gas turbine applications. He has written fourteen papers on the lateral rotor dynamics of centrifugal compressors, mostly on the effects of tilt pad damper bearings, oil-film seals, and gas labyrinth seals on rotor stability. Two of the papers proposed rotor stability criteria that were incorporated into the 7th Edition of API 617. Another of them was an invited paper on the usage of the Lund rotor dynamic programs for a special issue of the ASME JVA.

He has given a short course and presentations on the rotor dynamics of centrifugal compressors especially as related to API 617 many times to Dresser-Rand employees and customers and at conferences. He was on the API subcommittee that wrote the dynamics paragraphs of the 7th Edition of API 617 and on the Task Force that wrote the 2nd Edition of API 684 "API Standard Paragraphs Rotordynamic Tutorial."

He holds an A.B. from Hamilton College - Phi Beta Kappa, A.M. from Brown University and Ph.D. in Mathematics from Syracuse University. He was an Instructor in Mathematics at Hamilton College and at the State University of New York at Albany.

Dr. Krish Ramesh

Krish Ramesh is a Senior Product Technology Engineer at Dresser-Rand, Houston, TX. Krish graduated with a Ph.D. in Mechanical Engineering (Rotor Dynamics) from Virginia Tech in 1996. He started his career in 1996 with Dresser-Rand, Olean, NY as a rotor dynamic engineer. He has been responsible for developing state-of-art rotor dynamic modeling and analysis software. He moved to Dresser-Rand, Houston in 2002. In his current position as Senior Product Technology Engineer, he is responsible for pre-contract rotor dynamic analyses/certification of compressors. He is also responsible for rotor dynamic support, software maintenance/enhancement & user-support and overall compressor design queries for Dresser-Rand's Americas and Asia-Pacific regions.

He has written fourteen papers on lateral rotor dynamics on analysis methods, stability, and response of compressors. He has given short courses and presentations on compressor technology and rotor dynamics many times to Dresser-Rand employees and customers and at conferences.