SCORG Deforming Rotor Grid with ANSYS CFX solver
Animation shows a cycle of air compression with oil injection in the chamber of a 4/5 rotary screw compressor. The face area of discharge port is visible and velocity vectors shows the highly transient nature of gas-oil flow entering the discharge through the rotors. These flow oscillations are a cause of noise and mechanical vibration in the machines. Oil volume fraction is plotted from 0 to 25% range in a cross section. A small concentration is also seen on the suction side has has been practically observed during measurements. Dynamics of the Interaction of injected oil and the rotor lobes in the chamber are well illustrated by this CFD model. Such interactions are important for optimum oil injection design.