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Development Methodology of Modeling Free Piston Engine and Its Components
Proceedings of the 13th International Heat Transfer Conference, IHTC-13
  • Zhiguo Zhang, Huazhong University of Science and Technology
  • Mounir B. Ibrahim, Cleveland State University
Document Type
Conference Proceeding
Publication Date
1-1-2006
Abstract
A 2D Stirling engine numerical model that includes the expansion space, heater, regenerator, cooler, simplified “spider” and compression space was studied. Two 2D Stirling engine models were examined for different boundary conditions: One is the wall boundary without thickness or heat capacity, and one is wall boundary with thickness and heat capacity around the engine. The model dimensions were scaled from the STC 55 W Stirling engine. No experimental results were available for this scaled engine. The simulation results were examined to avoid round-off error, temporal discretization error and grid independence. The comparison between the 2D numerical simulation results and 1D model simulation results show some agreement for several major parameters. 2D-model for three different amplitudes of power piston were also simulated and simulation results for power output show same trend with the experimental results of STC 55 W Stirling engine. This investigation provided helpful information for future work on Stirling engine numerical model development. The studies also indicated that the numerical model for porous media (regenerator section of Stirling engine) needed improvement for accurately modeling the oscillatory flow and heat transfer in a Stirling engine regenerator section.
Comments

Paper presented at the 13th International Heat Transfer Conference, IHTC-13, Sydney, Australia, August 13 - 18, 2006.

DOI
10.1615/IHTC13.p22.10
Citation Information
Zhiguo Zhang and Mounir B. Ibrahim. "Development Methodology of Modeling Free Piston Engine and Its Components" Proceedings of the 13th International Heat Transfer Conference, IHTC-13 (2006)
Available at: http://works.bepress.com/mounir_ibrahim/27/