论文部分内容阅读
对物体在浓相流化床中的受力情况进行了理论和实验研究 ,结果表明 :运动物体在流化床中除受到重力外 ,还主要受到拟流体静压分布产生的浮力和流化粒子与物体相对运动产生的曳力作用 .物体在流化床中受到的浮力基本遵守 Archimedes原理 ,等于所排开拟流体的重力 .流化床的流变特性为 Bingham粘塑性流体 ,流化粒子作用在物体上的曳力可由修正的 Reynolds数代入牛顿曳力公式算出
The theoretical and experimental studies on the force of objects in a dense phase fluidized bed show that the moving objects in the fluidized bed are mainly subjected to the buoyancy and fluidized particles And the object of the relative movement of the drag force generated by objects in the fluidized bed buoyancy basically comply with the Archimedes principle is equal to the proposed gravity of the proposed fluid rheological properties of the fluidized bed Bingham viscoplastic fluid fluidized particles The drag on the object can be calculated from the modified Reynolds number into the Newtonian drag formula