Research On The Flowing Of Electrolyte In Electromagnetic Field

A new force suddenly rises, the computational fluid dynamics, as an organic union of classic fluid mechanics,numerical computation methods and computer science,develops to become the efficient means of both science research and engineering design.The interaction among theoretical analysis,experimental research and numerical simulation promotes both the theoretic renovation and engineering applications of fluid mechanics. The magnetic fluid propelling system, with its typical superiority, has become a developing boat propelling method in 21st century. It has great direction value on both computer simulation and numerical computation of flowing course of fluids. So it is worth exploring, developing and practice.In this article, starting from the receiving force of conducting liquid in both electric field and magnetic field, we analyzed the propelling ability and motion states of electrolyte solution in electromagnetic field, expounded the model of electromagnetism flow, designed an experiment device, and got the experiment data. We also analyzed the coupled field of electrolyte solution in passageway by numerical computation methods, and got specific results of theory, practice and simulation analysis.First, we analyzed the principle of the electrolyte solution propelled in electromagnetic field, and then set up a mathematic model of volume force under an ideal condition, inferred a mathematic model and move equations of the electrolyte solution propelled by both direct and alternating current, and received the relations between electric field (magnetic field) and motion.Second, we designed a WHLT-1 experiment device of flow display propelled by electromagnetic field, set up methods and equipment components which can diminish or eliminate the entrance speed of the observation propelling field area, structured the best plan and equipments observing light in flow field, designed an optoelectronic detecting device to measure the flow speed of electrolyte solution propelled by flow field and speed individually, got the data of flow speed, voltage and electric current of electrolyte solution, designed methods of observing by CCD and taking the pictures of flow field, obtained the vectogram data by analyzing and changing Images, got pictures of the propelling distribution and the flow field distribution of electrolyte solution at different moment.Third, we analyzed and induced the change of a model of two-dimensional 9 points lattice from microcosmic to macroscopic field by the lattice Boltzmann numerical method, got evolution equations, discussed the initial conditions, applicable range and boundary conditions, got equations of amending the added volume force, programmed a software for calculating by the Boltzmann method of two-dimensional lattice, obtained the demonstration of visualable result and verified it. This provided support for later contrast. We improved reorganization of this method by exploring its physics nature.Fourth, we analyzed the electromagnetism propelling of electrolyte solution in passageway by finite element method, inferred the discretization of the coupling for equations, set up a three-dimensional numerical simulation model by ANSYS software, got the results of motion analysis, electromagnetism force analysis, flow-field speed analysis and flow around cylinder of the electrolyte solution in electric field, magnetic field and electromagnetic field respectively.Final, we summarized the experiment results and contrasted the two numerical analysis methods in this article, and brought up the future study direction.