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Heat Transfer and Fluid Dynamics Measurements in the Expansion Space of a Stirling Cycle EngineThe heater (or acceptor) of a Stirling engine, where most of the thermal energy is accepted into the engine by heat transfer, is the hottest part of the engine. Almost as hot is the adjacent expansion space of the engine. In the expansion space, the flow is oscillatory, impinging on a two-dimensional concavely-curved surface. Knowing the heat transfer on the inside surface of the engine head is critical to the engine design for efficiency and reliability. However, the flow in this region is not well understood and support is required to develop the CFD codes needed to design modern Stirling engines of high efficiency and power output. The present project is to experimentally investigate the flow and heat transfer in the heater head region. Flow fields and heat transfer coefficients are measured to characterize the oscillatory flow as well as to supply experimental validation for the CFD Stirling engine design codes. Presented also is a discussion of how these results might be used for heater head and acceptor region design calculations.
Document ID
20070004891
Document Type
Contractor Report (CR)
Authors
Jiang, Nan
(Minnesota Univ. Minneapolis, MN, United States)
Simon, Terrence W.
(Minnesota Univ. Minneapolis, MN, United States)
Date Acquired
August 24, 2013
Publication Date
December 1, 2006
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
E-15718
IMECE 2006-15631
NASA/CR-2006-214454
Meeting Information
Meeting: International Mechanical Engineering Congress and Exposition
Location: Chicago, IL
Country: United States
Start Date: November 5, 2006
End Date: November 10, 2006
Sponsors: American Society of Mechanical Engineers
Funding Number(s)
WBS: WBS 138494.04.01.01
CONTRACT_GRANT: NCC04GB62G
CONTRACT_GRANT: NAG3-2482
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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