In silico evaluation of manufacturing concepts for non-Newtonian products

非牛顿产品制造概念的计算机评估

• 批准号: EP/M506795/1
• 负责人: Robert Prosser
• 金额: $ 23.55万
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM506795%2F1
• 关键词: silico; evaluation; manufacturing; concepts; non

The main aim of the work is to establish the optimal geometric configuration for a particular configuration of process mixer(a Controlled Deformation Dynamic Mixer (CDDM)). The project will seek to understand the unique flow dynamics foundinside the mixer itself and, through that understanding, improve the quality of the mixture that the device produces. At thesame time, the work will establish changes to the mixer geometry such that the overall mixture is improved, whilesimultaneously reducing the power required. The analysis of the mixer is made more complex because the flow within istypically non-Newtonian, and demonstrates a viscosity that is dependent (in the first instance) on the shear rate and (in thesecond instance) on the processing history of the fluid itself. The physics of the process material, coupled with thecompeting influences of high angular velocities (the mixer typically runs at approximately 50000rpm), high pressure dropsand extremely small flow geometries preclude easy characterisation of the flow. In addition, the channels through the mixerare sinuous and change with the mixer rotor position. In the light of these, the flow will be studied initially in the laminarflow mode and static configuration; as understanding develops, increasingly complex dynamics will be introduced---eitherthrough the mixer motion itself, through the action of the viscosity, through turbulent flow physics or some combination of allthree. The work is of considerable interest to the academic partner, as the evolving rheology represents an application ofmultiphysics; it couples together CFD, rheology and (in the longer term) meso-scale modelling. The wider goal of theproject is to accelerate the introduction of new & better products into the market by the simulation of manufacturingprocesses for complex multiphase liquid products for fast moving consumer goods (FMCG), and unifies computational fluiddynamics (CFD), rapid prototyping (RP) and experimental evaluation.

工作的主要目的是建立特定配置的过程混合器(受控变形动态混合器)的最优几何构型。该项目将寻求了解混合器内部独特的流动动力学，并通过这种了解来提高设备产生的混合物的质量。同时，这项工作将改变混合器的几何形状，从而改善整体混合物，同时降低所需的功率。由于混合器内的流动不是典型的非牛顿流体，混合器的分析变得更加复杂，并且证明了粘度(第一种情况下)依赖于剪切速率，(第二种情况下)取决于流体本身的加工历史。工艺材料的物理特性，再加上高角速度(混合器通常以大约50000rpm的速度运行)、高压力降和极小的流动几何形状的挤压影响，使得很难对流动进行表征。此外，通过密炼机的通道是弯曲的，并随着密炼机转子位置的变化而变化。有鉴于此，最初将在层流模式和静态结构中研究流动；随着理解的发展，将引入越来越复杂的动力学-无论是通过混合器运动本身，通过粘性的作用，还是通过湍流物理或三者的某种组合。学术伙伴对这项工作很感兴趣，因为不断发展的流变学代表了多物理学的应用；它将CFD、流变学和(长期而言)中观模型结合在一起。该项目更广泛的目标是通过对快速消费品(FMCG)复杂多相液体产品(FMCG)的制造过程进行模拟，并将计算流体动力学(CFD)、快速成型(RP)和实验评估相结合，加速将新的和更好的产品推向市场。

项目成果

Modelling turbulent emulsification in an inline high shear static mixer

在线高剪切静态混合器中模拟湍流乳化

• 作者: Michael, V.

An energy transport based evolving rheology in high-shear rotor-stator mixers

高剪切转子-定子混合器中基于能量传输的不断发展的流变学

• DOI: 10.1016/j.cherd.2018.02.019
• 发表时间: 2018
• 期刊: Chemical Engineering Research and Design
• 影响因子: 3.9
• 作者: Ahmed U

Simulation of droplet breakup and evolving rheology in a high shear mixer

高剪切混合器中液滴破碎和流变学的模拟

• 作者: Michael, V.

An energy transport approach to evolving rheology.

不断发展的流变学的能量传输方法。

• 作者: Ahmed U.

Simulation of turbulent drop break-up in a static mixer with Population Balance Models

使用群体平衡模型模拟静态混合器中的湍流液滴破碎

• 发表时间: 2017
• 作者: Bagkeris I