Analysis of the Heat and Mass Transfer Process and Entropy in Electroosmotic Flow

ZHAO Xiao-ling; YANG Da-yong; WANG Yang

doi:10.21656/1000-0887.370182

Volume 38 Issue 3

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ZHAO Xiao-ling, YANG Da-yong, WANG Yang. Analysis of the Heat and Mass Transfer Process and Entropy in Electroosmotic Flow[J]. Applied Mathematics and Mechanics, 2017, 38(3): 310-320. doi: 10.21656/1000-0887.370182

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Analysis of the Heat and Mass Transfer Process and Entropy in Electroosmotic Flow

doi: 10.21656/1000-0887.370182

Information Engineering School, Nanchang University, Nanchang 330031, P.R.China

Funds: The National Natural Science Foundation of China(11302095)

Received Date: 2016-06-07
Rev Recd Date: 2016-08-17
Publish Date: 2017-03-15

Abstract

Abstract

The heat and mass transfer process in microchannels was analyzed with constant heat flux through the wall. In the numerical calculation model, the electric double layer potential, velocity, ion concentration and temperature distribution were characterized with the Poisson-Boltzmann equation, the Navier-Stokes equation, the Nernst-Planck equation and the energy equation, respectively. The effects of different flow parameters on each thermal index in the heat and mass transfer process were investigated by means of the entropy generation, and the influences of important flow parameters on the total entropy generation and the proportion of each thermal effect were discussed in detail. The results reveal that, the increases of the kinetic parameters and the Joule heating coefficient weaken the heat transfer performance, and the influence of the kinetic parameters is more evident. The total entropy of the flow is an increasing function of the kinetic parameters, the mass transfer coefficient and the mass dispersion coefficient.
- electroosmotic flow,
- heat and mass transfer,
- entropy

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References(18)

References

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