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Mixing of two different electrolyte solutions in electromagnetic rectangular mixers
Wen, Meimei,Kim, Chang Nyung,Yan, Yue Springer-Verlag 2016 Journal of hydrodynamics. Ser. B Vol.28 No.1
<P>This study proposes a new electromagnetic rectangular mixer, and numerically examines the mixing characteristics of two different electrolyte solutions in the device under a uniform magnetic field. The mixer consists of a conduit with electrodes equipped on its top and bottom walls. The difference in the electric potentials applied to the sets of electrodes induces the current. The combination of the induced current and magnetic field yields Lorentz force, resulting in the fluid motion for pumping and mixing of the two different fluids. The numerical simulation is carried out with the use of commercial software CFX. The present numerical model is validated by an existing numerical work. The effect of different variables on mixing efficiency is investigated in many different cases with two different heights of the duct and various input voltages of the electrodes. The current simulation results indicate that the mixing performance can be enhanced by using multiple sets of electrodes and applying higher input voltages (absolute values) to the electrodes.</P>
김창영(Chang Nyung Kim),YAN Yue,WEN Meimei 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
In the present study, a two-dimensional numerical code is developed that is capable to predict the performance of a thermoelectric module that includes a p-leg and an n-leg together with top and bottom end plates. The present code can predict the heat flow, electric current, Joule heating, Peltier heating, Thomson heating and efficiency (or COP) of the modules whose properties depend on the temperature. The present numerical code can be used for the design and optimization of a thermoelectric power generator and a Peltier heater/cooler.