Guangliang Liu - Academia.edu (original) (raw)
Papers by Guangliang Liu
Volume 1: Fora, Parts A and B, 2002
Full field hydrodynamic mixing of a coaxial evaporating spray in the nozzle region of a circulati... more Full field hydrodynamic mixing of a coaxial evaporating spray in the nozzle region of a circulating fluidized reactor was numerically investigated. An Eulerian-Lagrangian numerical code was developed for the field description of evaporating spray characteristics with ...
Powder Technology, 2001
A simple analytical model of spray jet evaporation in gassolid suspension flows has been develop... more A simple analytical model of spray jet evaporation in gassolid suspension flows has been developed, which is based on the extension of similarity correlation from two-phase jets to three-phase jets. Effects of particle concentration, ambient temperature, and solids thermal ...
Mechanics Research Communications, 2003
Drag forces of interacting particles suspended in power-law fluid flows were investigated in this... more Drag forces of interacting particles suspended in power-law fluid flows were investigated in this study. The drag forces of interacting spheres were directly measured by using a micro-force measuring system. The tested particles include a pair of interacting spheres in ...
Journal of Membrane Science, 2000
Ultrasonic technology is successfully applied to enhance the permeate flux of membrane distillati... more Ultrasonic technology is successfully applied to enhance the permeate flux of membrane distillation. In this study, two major mechanisms of ultrasonic enhancement on membrane distillation, ultrasonic cavitation and acoustic streaming, are formulated in an analytical modeling. Ultrasonic induced membrane vibration, acoustic energy dissipation in viscous fluid, and membrane absorption and transmission of acoustic energy are also included in the modeling approach. Based on this model, effects of ultrasonic intensity, ultrasonic frequency, solution temperature and excited membrane area on permeate flux of membrane distillation are theoretically analyzed. It is found that the enhancement ratio can be improved by increasing ultrasonic intensity, decreasing ultrasonic frequency or decreasing the solution temperature. The current study also demonstrates that an enhancement up to 200% can be reached with an ultrasonic intensity from 0 to 5 W/cm 2 .
Powder Technology, 2004
This paper presents some preliminary observations on sound-assisted fluidization of hydrophobic f... more This paper presents some preliminary observations on sound-assisted fluidization of hydrophobic fumed silica nanoparticles (Degussa AerosilR R974, having a primary particle size of 12 nm) in the form of large 100 -400 Am agglomerates. The effect of sound on the fluidization behavior of the nanoparticle agglomerates, including the fluidization regime, the minimum fluidization velocity, the bed pressure drop and the bed expansion has been investigated. It is shown that, with the aid of sound wave excitation at low frequencies, the bed of nanoparticle agglomerates can be readily fluidized and the minimum fluidization velocity is significantly reduced. For example, the minimum fluidization velocity is decreased from 0.14 cm/s in the absence of sound excitation to 0.054 cm/s with the assistance of the sound. In addition, under the influence of sound, channeling or slugging of the bed quickly disappears and the bed expands uniformly. Within a certain range of the sound frequency, typically from 200 to 600 Hz, bubbling fluidization occurs. Both the bed expansion and the bubble characteristics are strongly dependent on the sound frequency and sound pressure level. However, sound has almost no impact on the fluidization, when the sound frequency is extremely high, above 2000 Hz. A relatively high sound pressure level (such as 115 dB) is needed to initiate the fluidization. D
Volume 1: Fora, Parts A and B, 2002
Full field hydrodynamic mixing of a coaxial evaporating spray in the nozzle region of a circulati... more Full field hydrodynamic mixing of a coaxial evaporating spray in the nozzle region of a circulating fluidized reactor was numerically investigated. An Eulerian-Lagrangian numerical code was developed for the field description of evaporating spray characteristics with ...
Powder Technology, 2001
A simple analytical model of spray jet evaporation in gassolid suspension flows has been develop... more A simple analytical model of spray jet evaporation in gassolid suspension flows has been developed, which is based on the extension of similarity correlation from two-phase jets to three-phase jets. Effects of particle concentration, ambient temperature, and solids thermal ...
Mechanics Research Communications, 2003
Drag forces of interacting particles suspended in power-law fluid flows were investigated in this... more Drag forces of interacting particles suspended in power-law fluid flows were investigated in this study. The drag forces of interacting spheres were directly measured by using a micro-force measuring system. The tested particles include a pair of interacting spheres in ...
Journal of Membrane Science, 2000
Ultrasonic technology is successfully applied to enhance the permeate flux of membrane distillati... more Ultrasonic technology is successfully applied to enhance the permeate flux of membrane distillation. In this study, two major mechanisms of ultrasonic enhancement on membrane distillation, ultrasonic cavitation and acoustic streaming, are formulated in an analytical modeling. Ultrasonic induced membrane vibration, acoustic energy dissipation in viscous fluid, and membrane absorption and transmission of acoustic energy are also included in the modeling approach. Based on this model, effects of ultrasonic intensity, ultrasonic frequency, solution temperature and excited membrane area on permeate flux of membrane distillation are theoretically analyzed. It is found that the enhancement ratio can be improved by increasing ultrasonic intensity, decreasing ultrasonic frequency or decreasing the solution temperature. The current study also demonstrates that an enhancement up to 200% can be reached with an ultrasonic intensity from 0 to 5 W/cm 2 .
Powder Technology, 2004
This paper presents some preliminary observations on sound-assisted fluidization of hydrophobic f... more This paper presents some preliminary observations on sound-assisted fluidization of hydrophobic fumed silica nanoparticles (Degussa AerosilR R974, having a primary particle size of 12 nm) in the form of large 100 -400 Am agglomerates. The effect of sound on the fluidization behavior of the nanoparticle agglomerates, including the fluidization regime, the minimum fluidization velocity, the bed pressure drop and the bed expansion has been investigated. It is shown that, with the aid of sound wave excitation at low frequencies, the bed of nanoparticle agglomerates can be readily fluidized and the minimum fluidization velocity is significantly reduced. For example, the minimum fluidization velocity is decreased from 0.14 cm/s in the absence of sound excitation to 0.054 cm/s with the assistance of the sound. In addition, under the influence of sound, channeling or slugging of the bed quickly disappears and the bed expands uniformly. Within a certain range of the sound frequency, typically from 200 to 600 Hz, bubbling fluidization occurs. Both the bed expansion and the bubble characteristics are strongly dependent on the sound frequency and sound pressure level. However, sound has almost no impact on the fluidization, when the sound frequency is extremely high, above 2000 Hz. A relatively high sound pressure level (such as 115 dB) is needed to initiate the fluidization. D