A study on the effects of geometric parameters in a low-temperature-differential γ-type Stirling engine using CFD

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

This study conducts a parametric investigation on a γ-type low temperature differential Stirling engine (LTDSE) using CFD. The effects on engine performance posed by four geometrical parameters namely phase angle between power piston and displacer, gap width between displacer and displacer cylinder, length of displacer, and length of power piston linkage bar, are systematically examined. One crucial advantage of using CFD is that temperature and velocity vector fields in engine space can be obtained, allowing important physical processes to be studied in great detail. Then the physical mechanisms through which a parameter affects engine performance can be identified. It is found that all four parameters are quite influential on engine performance despite that they are of little effect on the magnitude of engine's compression ratio. Within the ranges of parameters examined here, they affect engine performance by margins up to 32% on indicated power and 13% on efficiency. The results highlight the importance of every geometrical parameter on overall engine performance, and the information concluded in this study is very useful for the design of a new LTDSE.

原文English
頁(從 - 到)1002-1013
頁數12
期刊International Journal of Heat and Mass Transfer
107
DOIs
出版狀態Published - 2017 一月 1

All Science Journal Classification (ASJC) codes

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

指紋 深入研究「A study on the effects of geometric parameters in a low-temperature-differential γ-type Stirling engine using CFD」主題。共同形成了獨特的指紋。

引用此