Results 161 to 170 of about 16,873 (213)

Internal Sherwood Numbers for Diffusion in Sorption Operations

Chemical Engineering and Processing: Process Intensification, 1997
Abstract An approximate mathematical description of diffusion in sorption operations, based on the assumption of a linear driving force (LDF) for the diffusion process, is investigated. A method is presented to employ the LDF model as a useful tool for data analysis and process design for various sorption process types, by which elaborate numerical ...
Marc Bisschops
exaly   +2 more sources

Bed Sherwood Number in Fluidised Bed Combustion by Eulerian CFD Modelling

Chemical Engineering Science, 2013
Abstract The objective of this research is to evaluate the average gas-to-char mass transfer coefficient predicted by a two-dimensional Eulerian multiphase CFD model in the conditions prevailing in a bench and a pilot scale bubbling and circulating fluidised bed combustors.
Jouni Ritvanen, Srujal Shah, Timo Hyppanen   +2 more
exaly   +2 more sources

Effective Diffusivity in a Structured Packed Column: Experimental and Sherwood Number Correlating Study

Chemical Engineering Research and Design, 2014
Abstract Mass transfer coefficients along a structured packed column were experimentally determined to obtain a new correlation for dispersed phase Sherwood number based on molecular diffusivity. Then in a comparative investigation, the correlation was re-established based on effective diffusivity.
Mohsen Rezaeimanesh, Hossein Abolghasemi, Zoha Azizi   +2 more
exaly   +2 more sources

An Analytical Solution of Sherwood Number in a Stirred Continuous Cell During Steady State Ultrafiltration

Journal of Membrane Science, 2012
Abstract Sherwood number relationship was developed for gel controlled steady state ultrafiltration in a stirred cell from the first principles, under the framework of boundary layer analysis. A developing mass transfer boundary layer was considered and the governing equation was solved using an integral method.
Sirshendu De, Suvrajit Banerjee
exaly   +2 more sources

Sherwood Number in Porous Microtube Due to Combined Pressure and Electroosmotically Driven Flow

Chemical Engineering Science, 2011
Abstract Mass transfer of a neutral solute in a porous microtube is quantified in this study. An analytical expression of the Sherwood number is developed from first principles for combined flow of pressure driven and electroosmotic flow. Similarity solution method is adopted for solution of convective-diffusive species balance equation with coupled ...
Sirshendu De, Subir Bhattacharjee
exaly   +2 more sources

Study on Average Nusselt and Sherwood Numbers in Vertical Plate Channels With Falling Water Film Evaporation

International Journal of Heat and Mass Transfer, 2017
Abstract In this paper, the effects of variable parameters on the average Nusselt and Sherwood numbers between moist air and liquid water film in vertical plate channels are investigated using an approach proposed by previous work. The validity of data is also investigated. Traditional correlations for the average Nusselt and Sherwood numbers are not
Chengqin Ren
exaly   +2 more sources

The Effect of Type and Concentration of Nano-Particles on the Mass Transfer Coefficients: Experimental and Sherwood Number Correlating

Separation Science and Technology, 2015
Developments in the area of nano-fluids are ongoing specifically in the area of liquid-liquid extractions in different industries. In the present study, mass transfer coefficients have been obtained experimentally in a spray extraction column in the presence of different nano-particles to develop a new correlation for the prediction of the dispersed ...
Ahmad Rahbar-Kelishami
exaly   +2 more sources

A study of Nusselt and Sherwood numbers in a monolith reactor

Catalysis Today, 1999
Abstract A two-dimensional model of a single channel of a monolith reactor is used to evaluate the values of the Nusselt and Sherwood numbers under reaction conditions. The circular channel is assumed to have axisymmetry with a first-order reaction occurring at the wall.
R.E. Hayes, S.T. Kolaczkowski
openaire   +1 more source