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A CFD parametric study on the performance of a low temperature differential γ type Stirling engine

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Figure

Fig. 1 shows the definition of geometrical parameters of the engine. The displacements of the piston and displacer can be written as: x p 3 ðhÞ ¼ l c1  r 1 sin h þ ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffil21 r21cos2hq þ l 2  ; ð3Þxd3ðbÞ ¼ lc1 r2sin bþffiffiffiffiffiffiffiffiffiffiffi
Fig. 2. Computational mesh of the baseline engine.
Fig. 4 shows the variations of averaged temperature and heat transfer rates in the expansion and compression chambers within an engine cycle
Fig. 6. p–V diagram of three cases with three different r 2 , namely r 2 = 0.0100, 0.0125, and 0.0150 m, respectively.
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