Russ College of Engineering and Technology

Mechanical Engineering Department

Stirling Cycle Machine Analysis (Spring 2012)
<http://www.ohio.edu/mechanical/stirling/me422.html>

ME 422 (Class #15543)/ ME522 (Class #15545) = 3 credit hours.
Prereq: MATH344, ME328, CE340, and/with ME412, or Permission

The course structure is based on the book 'Stirling Cycle Engine Analysis', I Urieli & D M Berchowitz. (1984). This book is out of print, however some copies are available in Stocker Room 296. Much of the material that is in the book has been updated and placed on this web site, so that you will not need to refer to the text for this course. The book included FORTRAN code of the computer simulations, however all the programs have been updated and rewritten in MATLAB, a convenient interactive language which allows direct graphical output - essential for Stirling cycle analysis.

The course will develop around the analysis and computer simulation of single phase, piston/cylinder thermal power and refrigeration systems including thermodynamics, heat transfer and fluid flow friction.

Requred Course Outcomes

Depending on the class size, each student will be responsible for the simulation of a specific machine (engine or refrigerator). This will require understanding, adapting, modifying and using the basic MATLAB computer simulation program which will be provided to each student. There will be no formal laboratory work, however each student will be responsible for devising or obtaining basic data for their specific simulation.
During the quarter we will attempt to visit a number of companies involved in Stirling cycle machine development in Athens (Sunpower, Stirling Technology, Stirling Ultracold (previously: Global Cooling) as well as Andy Ross in Columbus.
We will also discuss aspects of parameter analysis and Stirling cycle machine design using these analysis techniques.

Tentative syllabus:

There will be no final examination. Grade will be determined by a final presentation and report on individual research, analysis, and computer program modules developed, as well as a discussion of the results obtained. The final report is due by Tuesday, June 5, 2012.
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The course includes a set of tutorial computer program modules for simulating specific Stirling engine configurations. These have been transcribed to the MATLAB language, and the complete set of m-files will be provided. The MATLAB program conveniently allows direct graphical output of the simulation results. One of your tasks will be to augment these modules to simulate and design the specific engine assigned to you, thus you will need to become familiar with the entire simulation package. Currently the engine modules are for Alpha machines, including a Sinusoidal drive, a Ross Yoke-drive and a Ross Rocker V engine. The heat exchanger types include tubular, annular gap, and slot heat exchangers, and the regenerator matrix types include screen mesh and rolled foil matrices. Working gas types include air, helium, and hydrogen.

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