Numerical investigation of shear flow structure induced by guided vane in a liquid-liquid cyclone reactor

Abstract

This work described the shear flow structure induced by a guided vane in the turbulent mixing layer of a liquid-liquid cyclone reactor. And the results show that the tangential velocity is much greater than radial velocity at the same axial section, which means the tangential velocity gives greater impact on the breakup of dispersed phase jet and droplet deformation. In addition, the variations of tangential velocity along radial, circumferential and axial directions were investigated. It was concluded that the tangential velocity increased firstly and then decreased with the radial position approaching the axis. The position of the peak tangential velocity along radial direction in the same axial position barely changed with the change of radian. But the peak tangential velocity value changed along the circumferential and axial directions, which attenuated in the form of power function along axial direction. Moreover, the tangential velocity showed a fluctuation along the circumferential direction. And the fluctuation of tangential velocity at the radial position of peak tangential velocity is more obvious. Besides, the amplitude of fluctuation gradually decreased with the axial section getting closer to the separation chamber. And a stable flow area was found at the axial section of z = 70~0 mm.