Analysis of flow characteristics of cylindrical and helical type multi-lobe roots blower

Roots blower is a positive displacement machine that has the advantage of larger flow than conventional blowers. blowers are widely used in industrial production such as chemicals, food, medical, etc. However, during actual operation, this type often achieves low performance. One issues greatly affect performance characteristics blower. Flow include factors related to rate, pressure, and phenomena chamber. characteristic analysis complex problem hydraulic machines. helps investigate motion design high-performance This study uses mathematical model gear theory rotor profile with cylindrical helical lobes multi-lobe The formed on principle ellipse rolls without slipping base circle. On basis profile, paper compares rate pressure two fluid dynamics was built ANSYS software. structural grid also increase computational efficiency model. embedded rotated results show same radial axial dimensions, lobe flow. more stable quality (15.2 % less fluctuation). In terms higher type. addition, reduces influence eddy currents acting chamber walls rotors. That increased efficiency. will be reliable for reducing time development high