Modeling the valve dynamics in a reciprocating compressor based on two-dimensional computational fluid dynamic numerical simulation

2012 ◽  
Vol 227 (4) ◽  
pp. 295-308 ◽  
Author(s):  
Yu Wang ◽  
Jianmei Feng ◽  
Bo Zhang ◽  
Xueyuan Peng
Keyword(s):  
Numerical Simulation ◽  
Computational Fluid Dynamic ◽  
Fluid Dynamic ◽  
Reciprocating Compressor ◽  
Two Dimensional ◽  
Valve Dynamics ◽  
Dynamic Numerical Simulation

Numerical Simulation of Thermal and Fluid-Dynamic Behaviour of Reciprocating Compressor

2000 ◽  
Author(s):  
Zhilong He ◽  
Xueyuan Peng ◽  
Pengcheng Shu
Keyword(s):  
Numerical Simulation ◽  
Fluid Flow ◽  
Heat Balance ◽  
Dynamic Behaviour ◽  
Fluid Dynamic ◽  
Reciprocating Compressor ◽  
One Dimensional ◽  
Compressor Design ◽  
Suction Line ◽  
Hermetic Compressor

Abstract This paper presents a numerical method for simulating the thermal and fluid-dynamic behavior of hermetic compressors in the whole compressor domain. The model of fluid flow is developed by integrating transient one-dimensional conservation equations of continuity, momentum and energy through all of the elements from suction line to discharge line. The model describing thermal behavior is based on heat balance in the components such as muffler, connecting tubes and orifices. The calculation of the thermodynamic and transport properties for different refrigerants at various conditions has been considered, and some numerical results for a hermetic compressor are presented. The present study has demonstrated that the numerical simulation is a fest and reliable tool for compressor design.

The Improved Research of the Defrosting of an Automobile Windshield

2012 ◽  
Vol 215-216 ◽  
pp. 42-45
Author(s):  
Tai Ming Huang ◽  
Wei Ke An ◽  
Jing Yin Tan ◽  
Yong Zhou
Keyword(s):  
Numerical Simulation ◽  
Computational Fluid Dynamic ◽  
Simulation Analysis ◽  
Fluid Dynamic ◽  
Left And Right ◽  
Cfd Numerical Simulation

The defrosting is very important in vehicle. In the paper, some improved proposals to the lack performance of the vehicle windshield defrosting would be discussed by using computational fluid dynamic (CFD) numerical simulation analysis and experiment to validate the improved proposal. The improved proposal including change the angle of the grill of wind outlet, and add grill on the left and right side. The discrepancy of the two methods is in 5%, which is acceptable. By the improved proposal that the windshield defrosting area is increased and also the requirements is satisfied.

Computational Fluid Dynamic Simulation of Hydrodynamic Behavior in a Two-Dimensional Conical Spouted Bed

2010 ◽  
Vol 24 (11) ◽  
pp. 6086-6098 ◽  
Author(s):  
Seyyed Hossein Hosseini ◽  
Goodarz Ahmadi ◽  
Behzad Saeedi Razavi ◽  
Wenqi Zhong
Keyword(s):  
Dynamic Simulation ◽  
Computational Fluid Dynamic ◽  
Fluid Dynamic ◽  
Computational Fluid Dynamic Simulation ◽  
Two Dimensional ◽  
Spouted Bed ◽  
Hydrodynamic Behavior
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