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| Numerical simulation on fluidization behavior of ferromagnetic particles in magnetically fluidized bed
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1. School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. School of Energy and Environment Southeast University, Nanjing, Jiangsu 210096, China）
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Abstract Based on two-fluid model and kinetic theory of granular flow, numerical simulations were carried out to investigate fluidization behaviors of ferromagnetic particles in magnetically fluidized bed （MFB） characterized by high granular concentration and strong interactions among particles. The numerical results indicate that under no or weak magnetic field particles assume bubbling fluidization due to the bubbles occurring in the bed; under moderate magnetic field, particles assume stable fluidization by restraining bubbles formation due to the enhancing effect of magnetic field. However, when the ratio of superficial gas velocity increases further, particles cannot assume stable fluidization since the magnetic forces exerted on particles are not dominant any more to assume bubbles forming in the bed. The numerical results agree well with the experimental data, reflecting the fluidization behavior of ferromagnetic particles in MFB in a large extent.
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2008, Vol. 29 
