Abstract
Twin-screw compressor is a kind of rotary positive displacement pump with excellent performance. Due to its advantages of reliable operation, high efficiency, low noise and multiphase mixed transportation, it has been widely used in the fields of energy power, biomedicine, refrigeration and air conditioning, petrochemical industry, industrial construction and other rudder fields. In recent decades, although the study of screw compressor is more in-depth, but the three-dimensional flow field simulation design of twin screw compressor still needs breakthrough. In this paper, 3d flow characteristics of twin screw compressor are studied based on CFD numerical simulation. In this paper, CFD software is used for numerical simulation of twin screw compressor, and the distribution of pressure cloud, temperature cloud and velocity cloud of internal flow field is obtained.
Highlights
Twin-screw compressor is a kind of rotary positive displacement pump with excellent performance
2.3 Grid Settings Grid is the smallest unit of fluid computing, and grid partitioning is the pre-processing of numerical simulation
Analysis of Internal Flow Field interface mesh generation process in rotor basin. 3.1 Temperature Field Analysis a) Input profile data of the Yin and Yang rotors to Figure. 5 is the cloud diagram of temperature determine basic parameters such as the number distribution in the whole basin of twin-screw of teeth and tooth spacing of the rotors
Summary
Grid is the smallest unit of fluid computing, and grid partitioning is the pre-processing of numerical simulation. 3.1 Temperature Field Analysis a) Input profile data of the Yin and Yang rotors to Figure. The inlet temperature is set at the Yang rotor as an example, the five teeth of 298.15K It can be seen from the Figure that the the Yang rotor can be regarded as five periods, working temperature of the rotor meshing area and 240 grid nodes are set on the profile of each and the outlet is higher than that of other areas, period. Under normal circumc) The Yin and Yang rotor domains are stances, the operating temperature of the screw compressor should not be too high. If the temperature is too high, the thermal expansion of the Yin and Yang rotors may occur, affecting the normal operation of the compressor. It is very important to design the cooling system of the compressor
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