In this paper a full transient 3-D CFD model of a complete single piston compressor system along with dynamic inlet and outlet port flip valves is presented. The model includes the motion of the cam driven piston, and also predicts the motion of the dynamic flip valves. All activities related to model creation, simulation and postprocessing were performed within the simulation software Simerics...

The gas force due to the combustion in the cylinder of an IC engine will cause the piston to move with primary motion and secondary motion. The primary motion of the piston from TDC to BDC is linear in nature. This motion is desired for translation of motion of engine components. Secondary motion is due to the transverse motion of the piston while piston moving from TDC to BDC and vice-versa. T...

This paper refers to the noise reduction of the rolling piston type rotary compressor. In general. as the rolling piston increases its speed under the high compression ratio condition. the noise level increases steeply. We resume that this happens because a certain shock wave is produced in the comPression space. Then we could simulate the Phenomenon by the numerical analysis ( CACE method ) of...

The hydraulic system of mobile garbage compression equipment was studied according to its actual working conditions. A simulation model of the hydraulic system was established with AMESim software, and the speed and acceleration of the piston rod were simulated. Simulation results show that the designed hydraulic system can achieve the action requirements. The experiment also shows the similar ...

The efficiency of the valved linear compressor is very important to space J-T throttling refrigerator. To compare single-piston (SVLC) and symmetrical dual-piston (SDVLC), this paper explores factors that affect efficiency. Firstly, analyzes mechanical vibration system compressor, result shows highest when external force (current) in phase with speed. Then numerical solutions current velocity a...

Besides reciprocating compressors which are the traditional working machines in refrigeration cycles a growing number of different types of rotary compressors is used especially for air conditioning purposes. In an experimental investigation various reciprocating and rotary compressors were ana lysed concerning their thermodynamic and mechanical losses. The compressors investigated are all near...

Aiming at the thermal load problem of four-stroke high-speed Diesel engine piston, a piston fluid-solid coupling model based on combustion boundary and two-phase flow oscillation cooling is established. The considers that cannot fill cavity due to reciprocating motion. effects different speeds injection speed filling rate are studied. variation curves oil in simulated, transient heat transfer c...

The velocity profile and pressure gradient of an unsteady state unidirectional MHD flow of Voigt fluids moving between two parallel surfaces under magnetic field effects are solved by the Laplace transform method. The flow motion between parallel surfaces is induced by a prescribed inlet volume flow rate that varies with time. Four cases of different inlet volume flow rates are considered in th...

We calculate the scalar Casimir energy and Casimir force for a R×N Kaluza-Klein piston setup in which the extra dimensional space N contains a non-commutative 2sphere, SFZ . The cases to be studied are T d × SFZ and SFZ respectively as extra dimensional spaces, with T d the d dimensional commutative torus. The validity of the results and the regularization that the piston setup offers are exami...