CFD simulation and investigation on the operating mechanism of a beta-type free piston Stirling engine
CFD simulation and investigation on the operating mechanism of a beta-type free piston Stirling engine
复制标题
β型自由活塞斯特林发动机运行机理的CFD模拟与研究
DOI：
10.1016/j.applthermaleng.2019.114751
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发表时间：
2020-02
影响因子：
6.4
通讯作者：
Hong Guotong
中科院分区：
文献类型：
--
作者：
Chi Chunyun;Mou Jian;Lin Mingqiang;Hong Guotong
为了研究β型自由活塞斯特林发动机的工作机理，建立了二维轴对称CFD模型。通过实验验证了模型的可靠性。利用该模型可以得到膨胀室和压缩室温度场和流场的周期性变化。采用适当的后处理方法可以跟踪换热器中气体包的运动，实现欧拉方法向拉格朗日方法的转化。结果表明，振荡流中每个气体包具有不同的热力学过程，这与传统的热力学循环不同。由于气包温度梯度的升高和抽热能力的增强，气包的做功随气包与热端距离的减小而增大。蓄热器是换热器的主要工作部件，气体包的热力学过程类似于微型发电机的热力学过程。
In order to study the operating mechanism of a beta-type free piston Stirling engine, a two-dimensional axisymmetric CFD model is established. Then the model reliability is verified by experiments. The periodic variation of temperature field and flow field in the expansion chamber and compression chamber can be obtained by the model. The motion of gas parcel in heat exchangers can be tracked by appropriate post-processing method which can achieve the transformation of Euler method to Lagrange method. The results present that each gas parcel in the oscillating flow has different thermodynamic process, which is different from the traditional thermodynamic cycle. Due to the elevating of the temperature gradient of gas parcel and the enhancement of the ability of pumping heat, thep-vwork of parcels increases with the decreasing of distance between the corresponding gas parcel and the hot end. The regenerator is the main working component of the heat exchangers in that the thermodynamic process of gas parcel is similar to that of a micro-generator.
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影响因子：
9
作者：
M. Mohammadi;A. Jafarian
通讯作者：
M. Mohammadi;A. Jafarian
影响因子：
10.4
作者：
I. Tlili;Saed A. Musmar
通讯作者：
I. Tlili;Saed A. Musmar
DOI：
10.1088/1757-899x/171/1/012090
发表时间：
2017-02
期刊：
IOP Conference Series: Materials Science and Engineering
影响因子：
--
作者：
J. Mou;G. Hong
通讯作者：
J. Mou;G. Hong
影响因子：
4.6
作者：
Halit Karabulut;Can Çιnar;F. Aksoy
通讯作者：
Halit Karabulut;Can Çιnar;F. Aksoy
影响因子：
3.2
作者：
Jingtao Liang
通讯作者：
Jingtao Liang