A computational fluid dynamics study on the heat transfer characteristics of the working cycle of a low-temperature-differential γ-type Stirling engine

Wen-Lih Chen, King Leung Wong, Yu Feng Chang

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A three-dimensional compressible CFD code has been developed to study the heat transfer characteristics of a twin-power piston γ-type Stirling engine. The results include temperature contours, velocity vectors, and distributions of local heat flux along solid boundaries at several important time steps as well as variation of average temperatures, integrated rates of heat input, heat output, and engine power. It is found that Impingement is the major heat transfer mechanism in the expansion and compression chambers, and the temperature distribution is highly non-uniform across the engine volume at any given moment. This study sheds light into the complex heat transfer mechanism inside the Stirling engine and is very helpful to the understanding of the fundamental process of the engine cycle.

Original languageEnglish
Pages (from-to)145-155
Number of pages11
JournalInternational Journal of Heat and Mass Transfer
Volume75
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Stirling engines
computational fluid dynamics
engines
Computational fluid dynamics
heat transfer
Heat transfer
Engines
cycles
heat
impingement
charge flow devices
pistons
Pistons
Temperature
Heat flux
heat flux
Temperature distribution
temperature distribution
chambers
moments

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

Cite this

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abstract = "A three-dimensional compressible CFD code has been developed to study the heat transfer characteristics of a twin-power piston γ-type Stirling engine. The results include temperature contours, velocity vectors, and distributions of local heat flux along solid boundaries at several important time steps as well as variation of average temperatures, integrated rates of heat input, heat output, and engine power. It is found that Impingement is the major heat transfer mechanism in the expansion and compression chambers, and the temperature distribution is highly non-uniform across the engine volume at any given moment. This study sheds light into the complex heat transfer mechanism inside the Stirling engine and is very helpful to the understanding of the fundamental process of the engine cycle.",
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