Rising behavior of single bubble in infinite stagnant non-Newtonian liquids

A conductivity method has been used to assess the homogenization efficiency of screw impellers with draught tubes. The value of the criterion of homochronousness, i.e. the dimensionless time of homogenization, in the creeping flow regime of Newtonian liquids is dependent on the geometrical simplexes of the mixing system. In particular, on the ratio of diameters of the vessel and the impeller and on the ratio of the screw lead to the impeller diameter. Expression have been proposed to calculate the mixing times. Efficiency has been examined of individual configurations of screw impellers. The lowest energy requirements for homogenization have been found for the system with the ratio D/d = 2.

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Process characteristics of screw impellers with a draught tube for Newtonian liquids. Pumping capacity of the impeller

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19812021 ◽

1981 ◽

Vol 46 (9) ◽

pp. 2021-2031 ◽

Cited By ~ 6

Author(s):

Pavel Seichter

Keyword(s):

Viscous Liquid ◽

Energy Criterion ◽

Velocity Profiles ◽

Newtonian Liquid ◽

Creeping Flow ◽

Geometrical Arrangement ◽

Draught Tube ◽

Process Characteristics ◽

Newtonian Liquids

Velocity profiles and pumping capacity have been determined using a thermistor anemometer in a vessel equipped with a screw impeller. In region of the creeping flow of a Newtonian liquid, i.e. for Re <15, the dimensionless pumping capacity is dependent on the geometrical arrangement of the mixing system. The efficiency was assessed of individual configuration from the value energy criterion expressing the dimensionless power requirements for recirculation of a highly viscous liquid in a vessel equipped with a screw impeller.

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Absorption of oxygen into solutions of polymers

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19862127 ◽

1986 ◽

Vol 51 (10) ◽

pp. 2127-2134 ◽

Cited By ~ 1

Author(s):

František Potůček ◽

Jiří Stejskal

Keyword(s):

Mass Transfer ◽

Aqueous Solutions ◽

Transfer Coefficient ◽

Mass Transfer Coefficient ◽

Flow Rate ◽

Liquid Flow ◽

Flow Curve ◽

Liquid Flow Rate ◽

Polymer Concentration ◽

Newtonian Liquids

Absorption of oxygen into water and aqueous solutions of poly(acrylamides) was studied in an absorber with a wetted sphere. The effects of changes in the liquid flow rate and the polymer concentration on the liquid side mass transfer coefficient were examined. The results are expressed by correlations between dimensionless criteria modified for non-Newtonian liquids whose flow curve can be described by the Ostwald-de Waele model.

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A Glycerol Drop in Water Boosts Single-Bubble Sonoluminescence

Japanese Journal of Applied Physics ◽

10.1143/jjap.42.716 ◽

2003 ◽

Vol 42 (Part 1, No. 2A) ◽

pp. 716-720 ◽

Cited By ~ 2

Author(s):

Naser Harba ◽

Shigeo Hayashi

Keyword(s):

Single Bubble ◽

Single Bubble Sonoluminescence

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