The present paper studied the effects of electrostatics on gas-solids hydrodynamics and bubble characteristics of gas-solids bubbling bed with and without immersed horizontal tubes by applying the two-fluid model coupling with the electrostatic model. At first

the two-fluid model without electrostatic field was adopted to simulate the hydrodynamics in the gas-solids bubbling bed with and without immersed horizontal tubes. Further coupled with the electrostatic model

the effects of electrostatics on bubble distribution characteristics in the gas-solids bubbling bed with and without the immersed horizontal tubes were investigated. The results demonstrated that in the electrostatic field conditions

the two-fluid model can be used to predict gas-solid flow conditions

the bubble diameter

and bubble riser velocity for gas-solids bubbling bed with and without immersed horizontal tubes. However

the immersed horizontal tubes in gas-solids bubbling bed caused an intense disturbance of gas-solids

making a concussion in the distribution of the bubble diameter and bubble riser velocity. The electrostatics did not have a large effect on the average solids holdup of the bed

but showed a greater impact on the bubble characteristics. The electrostatics decreased the number of bubbles of the gas-solids bubbling bed without the immersed horizontal tubes and made more number of bubbles be concentrated in the lower region of the gas-solids bubbling bed with the immersed horizontal tubes and more number of large bubbles be located in the upper part of the gas-solids bubbling bed with the immersed horizontal tubes.