毕业设计（论文）-双层桨叶提钒搅拌浸出槽的数值分（全套图纸）.docVIP

武汉科技大学本科毕业论文本科毕业论文题目：双层桨叶提钒搅拌浸出槽的数值分析学 院:机械自动化学院专 业:机械电子工程学 号:学生姓名:指导教师:日 期:二〇一六年五月 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT I摘 要 除传统工业应用外，钒在非钢铁领域的应用越来越广泛，其范围涵盖了航空航天、化学、电池、颜料、玻璃、光学、医药等众多领域。基于钒的广泛用途，以提取和使用钒为目的全球产业也随之得以发展。石煤是我国独特的一种矶矿资源，因为储量极为丰富，因此，从石煤中提取钒是我国提取钒的重要途径。 本文基于Fluent软件，采用标准的k-e湍流模型，欧拉-欧拉多相流模型，多重参考系稳态流动方法，对浸出槽内固液两相流动过程进行数值模拟研究。应用数值模拟方法研究桨叶离底高度，浆叶转速或者说桨叶的正反转和阻尼板高度或有无对槽内固液浓度分布的规律，这是近来我国对这方面的研究重点。结果表明：在一定范围内，增大浆叶的转速有利于改善槽内固液分布，尤其是靠近槽底和靠近液面的那部分流场分布，改善固液分布；在一定的范围内，增大阻尼板的高度有利于槽内固相的上浮；在允许的范围内，降低浆叶离底高度有利于改善槽底沉积现象，当浆叶离底高度为0.3D时效果较好；变速搅拌能提高搅拌槽的搅拌效率。对双层桨叶搅拌槽内部流场进行数值模拟，考察了不同桨叶类型和桨叶间距对浸出槽内部流场的影响。利用ANSYS软件对模型进行网格划分和组元创建，利用对桨叶的力学分析对桨叶转速进行优化。关键词：搅拌流场；Fluent；ANSYS；流场模拟;双层桨叶全套图纸加153893706 AbstractVanadium?is?an?important?strategic?material?and?has?many?uses.?n addition to traditional industrial applications, the application of vanadium in the field of non iron and steel is more and more widely, its scope covers the aerospace, chemical, battery, paint, glass, optics, medicine and many other fields. Vanadium is widely used to extract and use vanadium for the purpose of the global industry has also been able to develop. Coal is our country unique a rocky mineral resources, because of very rich reserves, therefore, from stone coal extraction of vanadium is an important way for the extraction of vanadium.This paper based on the FLUENT software, the standard k-e turbulence model, Eulerian Eulerian pull model of multiphase flow, multiple reference lines steady flow method, of leaching tank solid-liquid two-phase flow numerical simulation study. Using numerical simulation method to study the blade from the bottom of the height, speed of the blade or blades said negative and positive damping plate height or no rules of the groove of the solid concentration distribution, which is recently, our research focuses on this aspect. The results showed that in a certain range, increasing the rotational speed of the blades to improve tank solid-liquid distribution, especially