By using lubrication equation, elastic equilibrium equation and narrow gap flow theory, the pressure distribution, thickness of liquid film and friction force on the inner surface of the reciprocating rectangular sealing ring, which play an important role on sealing performance, are studied.

The first experiment is to study liquid flowing inside the rotor by visual investigation, and try to measure the thickness of liquid film on the surface of the packing.

For the absorption process in which the gas phase resistance to mass transfer between two phases is neglectable,the mass transfer rate is mainly dominated by liquid bulk concentration and thickness of liquid film.

By using lubrication equation, elastic equilibrium equation and narrow gap flow theory, the pressure distribution, thickness of liquid film and friction force on the inner surface of the reciprocating rectangular sealing ring, which play an important role on sealing performance, are studied.

The first experiment is to study liquid flowing inside the rotor by visual investigation, and try to measure the thickness of liquid film on the surface of the packing.

For the absorption process in which the gas phase resistance to mass transfer between two phases is neglectable,the mass transfer rate is mainly dominated by liquid bulk concentration and thickness of liquid film.

Based on analysis of flow mechanism,a hydrodynamic model of slug flow in vertical pipes was developed considering the variable thickness of liquid film.

Experimental determination of thickness of liquid film remaining on internal surface of a horizontal capillary

Determinating the thickness of liquid film holdup on a rotating drum surface

The results show that with the increase in the rate of welding thermal cycle, the solid dissolution of precipitate prior to liquation decreases and the thickness of liquid film produced by constitutional liquation increases.

By using lubrication equation, elastic equilibrium equation and narrow gap flow theory, the pressure distribution, thickness of liquid film and friction force on the inner surface of the reciprocating rectangular sealing ring, which play an important role on sealing performance, are studied. Theoretical calculation is done by finite element method and difference method. The pressure distribution and friction force are also measured in experiments.

Based on analysis of flow mechanism,a hydrodynamic model of slug flow in vertical pipes was developed considering the variable thickness of liquid film.Effects of film thickness on results were dis- cussed and the model was evaluated with experimental data available from the literature,It was found that if the variation of thickness was neglected,and Taylor bubble was considered as a cylindrical bubble,the length of Taylor bubble would be under predicted.The simplification can also result...

Based on analysis of flow mechanism,a hydrodynamic model of slug flow in vertical pipes was developed considering the variable thickness of liquid film.Effects of film thickness on results were dis- cussed and the model was evaluated with experimental data available from the literature,It was found that if the variation of thickness was neglected,and Taylor bubble was considered as a cylindrical bubble,the length of Taylor bubble would be under predicted.The simplification can also result in an over prediction of pressure gradient,and the deviation will increase as gas superficial velocity increases for a fixed liquid superficial ve- locity.The improved model takes into account the flow characteristic of liquid film,and can predict the data obtained from different sources with a fairly well accuracy.

The present paper aims at the understanding on the gas-liquid mass transfer mechanism of absorption process.On the basis of molecule thermodynamics,combining the general chemical potential driving force equation of mass transfer flux,a concentration corrrelation at interface between two phases is derived and solved under different bulk liquid concentrations in absorption process.The computational results show that the interfacial concentration of absorbed component on liquid side is strongly affected by a Biot...

The present paper aims at the understanding on the gas-liquid mass transfer mechanism of absorption process.On the basis of molecule thermodynamics,combining the general chemical potential driving force equation of mass transfer flux,a concentration corrrelation at interface between two phases is derived and solved under different bulk liquid concentrations in absorption process.The computational results show that the interfacial concentration of absorbed component on liquid side is strongly affected by a Biot number Yo and is also bulk concentration dependent.For the absorption process in which the gas phase resistance to mass transfer between two phases is neglectable,the mass transfer rate is mainly dominated by liquid bulk concentration and thickness of liquid film.The CO_2 interfacial concentration on liquid side in stationary absorption by pure methanol,ethanol and n-propanol absorbent respectively are measured using micro laser holographic interference technique to validate the model proposed,the experimental values are in good agreement with the calculated ones.