Numerical Simulation of Unilateral Labyrinth Screw Pumps Based on Fluent

Xueqing Fan
School of Energy and Environment, Southeast University, Nanjing, 211102
Naiji Zhang
Jiangsu Development and Reform Commission, Nanjing, 210013
Liang Cai
School of Energy and Environment, Southeast University, Nanjing, 211102;3. Institute for Carbon Neutral Development, Nanjing, 210018 4. Institute of Science and Technology for Carbon Neutrality, Nanjing, 210096

Abstract:

Considering the problem of insufficient space installation in practical engineering applications, a unilateral labyrinth screw pump is proposed to be used to transport media and raise pressure. Application of computational fluid dynamics FLUENT software, the unilateral labyrinth screw pump internal flow field numerical simulation. The pressure and velocity distribution of the flow field is analyzed, and it is concluded that: the static pressure inside the pump of the unilateral labyrinth screw pump rises uniformly along the direction of the pump height in general, and the pressure-raising effect is good. The flow velocity in the rotor region is significantly higher than that in the stator region. Change the number of threads and screw angle, according to the numerical simulation results to analyze the performance of unilateral labyrinth screw pump changes. It is analyzed that: the head and efficiency of the unilateral labyrinth screw pump first increase with the increase of the number of threads and screw angle, and then gradually decrease after reaching the peak value. The head and efficiency of the pump reach the optimum value when the number of threads is 72 and the screw angle is 17°.