can you guess what are the conditions required for compression ?
Answers
Answer:
The compression process in a screw compressor occurs due to the rotation of the male rotor at a preset motor speed, which in turn drives the female rotor. To be able to accurately simulate this scenario, an adaptive mesh, which is modified at the beginning of each timestep, is required. In the previous paragraph, the procedure for generating the mesh for both the rotor and the casing domains, was presented. There is no need for interpolation of the casing mesh and therefore, it is kept constant through the simulation process.
Because of the rotation of the two rotors, the shape of the working chamber is changed constantly, as the gas particles enter the domain through the suction port, are compressed within the rotors and then discharged at the desired pressure. An adaptive meshing technique is utilized to capture all the changes which occur within the working chamber during the compression process.
The number of time changes required by the rotors mesh is 120 for the full rotation of the male rotor, with the number of nodes kept constant across the timesteps. This is calculated as:
No of grids=No of elements per lobe·No of lobes(male) = 120
The rotor mesh is replaced with the updated lobe position at time intervals equal to the calculated timestep:
Explanation:
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