摘要
新型饲料粉碎机改变传统锤片粉碎机的物料环流层,利用单机循环粉碎的方法解决传统粉碎机能耗大、物料粉碎率、物料温升大和锤片末端磨损的问题。其粉碎室内部流场直接影响饲料的分离效率以及物料的输送效率,采用计算流体力学的方法(CFD)模拟其内部流场,对于优化粉碎室内部结构体购粉碎率以及减少负压有重要作用。通过MRF和动网格UDF两种方法,对转笼内部流场进行计算比较,分析表明MRF在模型处理复杂运动边界模拟和计算结果连续性方面不及动网格UDF模型,MRF在计算耗费方面优于动网格模型。
The new feed mill to change traditional material circulation layer of hammer mill, the use of single-circuit grinding mill of traditional methods to solve large energy consumption, material crushing rate, the material temperature rise is big and the hammer end wear problems. The crushing chamber internal flow field directly affects feed separation efficiency, material conveying efficiency, by using the method of computational fluid dynamics （CFD） simulation of the internal flow field, for the optimization of the grinding chamber internal structure purchase crushing rate and have an important role to reduce the negative pressure. Through the MRF and dynamic grid UDF, comparison of the calculation of internal flow field of the rotor cage, analysis showed that the MRF in the model boundary processing complex motion simulation and calculation results of continuity than the dynamic mesh model of UDF, MRF superior in terms of cost calculation in dynamic mesh model.
出处
《饲料工业》
北大核心
2015年第13期5-9,共5页
Feed Industry
基金
国家自然基金青年科学基金资助项目[51105189]
内蒙古自然科学基金[2014MS0534]
