An optimized roots power machine based on negative displacement theory

Roots power machine has obvious advantages in low and medium temperature waste heat recovery. The existing roots the problem of internal flow field disturbance, which seriously affects generation efficiency machine. In order to solve disturbance machine, traditional involute rotor is improved, based on negative displacement proposed. structure model turbulence are constructed, simulation realized by CFD. pressure contour torque change before after improvement compared, experimental research improved carried out. results show that intensity modified decreases, working performance improves,which provides a reference for structural optimization