Fluid motion and mixing in a gas-liquid contactor with turbine agitators

Interfacial area and coalescence frequency in gas‐slurry stirred reactors

“…These gas holdup measurements varied by 2 35%. The gas holdup values at the vertical level of the impeller in the region considered were found to be one-half of the overall holdup value, in agreement with the work of Nagase and Yasui (1983) and Nienow et al (1977) solids on the overall and local gas holdups was found to be negligible, which is in agreement with the work of Chapman et al (1983).…”

Interfacial area and coalescence frequency in gas‐slurry stirred reactors

“…These gas holdup measurements varied by 2 35%. The gas holdup values at the vertical level of the impeller in the region considered were found to be one-half of the overall holdup value, in agreement with the work of Nagase and Yasui (1983) and Nienow et al (1977) solids on the overall and local gas holdups was found to be negligible, which is in agreement with the work of Chapman et al (1983).…”

Gas‐filled cavity structures and local void fraction distribution in aerated stirred vessel

“…A second, less profound peak occurred above the impeller in all cases. This can be explained by recirculation flow produced by the impeller as discussed by Nagase and Yasui (1983). On the other hand, Calderbank (1958) mentioned peaks, another peak occurs below the impeller.…”

“…Experimental Conditions for Global or Local Void Fraction MeasurementsNienow et al (1977) Yung et al*Nagase and Yasui (1983) Greaves and Barigou (1987) Bakker and van denAkker (1991) …”

Analysis of Gas-Liquid Flow in an Aerated Reactor Equipped with a Coaxial Mixer through Tomography and CFD

“…Local gas holdup measurement techniques can be categorized into invasive and non-invasive groups. Some of the invasive techniques have been reported in the literature including heat transfer probe (Boyer et al, 2002), needle probe (Wang et al, 2006;Kumar et al, 1995), and suction methods (Nagase and Yasui, 1983;Nienow et al, 1977). The problem associated with the invasive methods is that they yield the disturbance of the flow inside the tank.…”

Interfacial area and coalescence frequency in gas‐slurry stirred reactors

“…These gas holdup measurements varied by 2 35%. The gas holdup values at the vertical level of the impeller in the region considered were found to be one-half of the overall holdup value, in agreement with the work of Nagase and Yasui (1983) and Nienow et al (1977) solids on the overall and local gas holdups was found to be negligible, which is in agreement with the work of Chapman et al (1983).…”

Gas‐filled cavity structures and local void fraction distribution in aerated stirred vessel

“…A second, less profound peak occurred above the impeller in all cases. This can be explained by recirculation flow produced by the impeller as discussed by Nagase and Yasui (1983). On the other hand, Calderbank (1958) mentioned peaks, another peak occurs below the impeller.…”

“…Experimental Conditions for Global or Local Void Fraction MeasurementsNienow et al (1977) Yung et al*Nagase and Yasui (1983) Greaves and Barigou (1987) Bakker and van denAkker (1991) …”

Analysis of Gas-Liquid Flow in an Aerated Reactor Equipped with a Coaxial Mixer through Tomography and CFD

“…Local gas holdup measurement techniques can be categorized into invasive and non-invasive groups. Some of the invasive techniques have been reported in the literature including heat transfer probe (Boyer et al, 2002), needle probe (Wang et al, 2006;Kumar et al, 1995), and suction methods (Nagase and Yasui, 1983;Nienow et al, 1977). The problem associated with the invasive methods is that they yield the disturbance of the flow inside the tank.…”

Interfacial area and coalescence frequency in gas‐slurry stirred reactors

“…These gas holdup measurements varied by 2 35%. The gas holdup values at the vertical level of the impeller in the region considered were found to be one-half of the overall holdup value, in agreement with the work of Nagase and Yasui (1983) and Nienow et al (1977) solids on the overall and local gas holdups was found to be negligible, which is in agreement with the work of Chapman et al (1983).…”

Gas‐filled cavity structures and local void fraction distribution in aerated stirred vessel

“…A second, less profound peak occurred above the impeller in all cases. This can be explained by recirculation flow produced by the impeller as discussed by Nagase and Yasui (1983). On the other hand, Calderbank (1958) mentioned peaks, another peak occurs below the impeller.…”

“…Experimental Conditions for Global or Local Void Fraction MeasurementsNienow et al (1977) Yung et al*Nagase and Yasui (1983) Greaves and Barigou (1987) Bakker and van denAkker (1991) …”

Analysis of Gas-Liquid Flow in an Aerated Reactor Equipped with a Coaxial Mixer through Tomography and CFD

“…Local gas holdup measurement techniques can be categorized into invasive and non-invasive groups. Some of the invasive techniques have been reported in the literature including heat transfer probe (Boyer et al, 2002), needle probe (Wang et al, 2006;Kumar et al, 1995), and suction methods (Nagase and Yasui, 1983;Nienow et al, 1977). The problem associated with the invasive methods is that they yield the disturbance of the flow inside the tank.…”