| 在同心和偏心圆环中有屈服应力的黏塑性流体流动的模型和数值模拟(英文) |
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| 引用本文： | 毛在砂,杨超,Vassilios C.Kelessidis.在同心和偏心圆环中有屈服应力的黏塑性流体流动的模型和数值模拟(英文)[J].中国化学工程学报,2012,20(1):191-202. |
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| 作者姓名： | 毛在砂 杨超 Vassilios C.Kelessidis |
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| 作者单位： | 1. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. Mineral Resources Engineering Department, Technical University of Crete, Greece |
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| 基金项目： | Supported by the State Key Development Program for Basic Research of China (2009CB623406);the National Natural Science Foundation of China (20990224,11172299);the National Science Fund for Distinguished Young Scholars (21025627) |
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| 摘 要： | Numerical solution of yield viscoplastic fluid flow is hindered by the singularity inherent to the Herschel-Bulkley model.A finite difference method over the boundary-fitted orthogonal coordinate system is util-ized to investigate numerically the fully developed steady flow of non-Newtonian yield viscoplastic fluid through concentric and eccentric annuli.The fluid rheology is described with the Herschel-Bulkley model.The numerical simulation based on a continuous viscoplastic approach to the Herschel-Bulkley model is found in poor accordance with the experimental data on volumetric flow rate of a bentonite suspension.A strict mathematical model for Herschel-Bulkley fluid flow is established and the corresponding numerical procedures are proposed.However,only the case of flow of a Herschel-Bulkley fluid in a concentric annulus is resolved based on the presumed flow structure by using the common optimization technique.Possible flow structures in an eccentric annulus are pre-sumed,and further challenges in numerical simulation of the Herschel-Bulkley fluid flow are suggested.
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| 关 键 词： | yield viscoplastic fluid Herschel-Bulkley model non-Newtonian fluid flow annulus mathematical model |
| 收稿时间： | 2011-10-31 |
Modeling and Numerical Simulation of Yield Viscoplastic Fluid Flow in Concentric and Eccentric Annuli |
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| MAO Zaisha,YANG Chao,Vassilios C. Kelessidis.Modeling and Numerical Simulation of Yield Viscoplastic Fluid Flow in Concentric and Eccentric Annuli[J].Chinese Journal of Chemical Engineering,2012,20(1):191-202. |
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| Authors: | MAO Zaisha YANG Chao Vassilios C Kelessidis |
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| Affiliation: | 1. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. Mineral Resources Engineering Department, Technical University of Crete, Greece |
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| Abstract: | Numerical solution of yield viscoplastic fluid flow is hindered by the singularity inherent to the Herschel-Bulkley model.A finite difference method over the boundary-fitted orthogonal coordinate system is util-ized to investigate numerically the fully developed steady flow of non-Newtonian yield viscoplastic fluid through concentric and eccentric annuli.The fluid rheology is described with the Herschel-Bulkley model.The numerical simulation based on a continuous viscoplastic approach to the Herschel-Bulkley model is found in poor accordance with the experimental data on volumetric flow rate of a bentonite suspension.A strict mathematical model for Herschel-Bulkley fluid flow is established and the corresponding numerical procedures are proposed.However,only the case of flow of a Herschel-Bulkley fluid in a concentric annulus is resolved based on the presumed flow structure by using the common optimization technique.Possible flow structures in an eccentric annulus are pre-sumed,and further challenges in numerical simulation of the Herschel-Bulkley fluid flow are suggested. |
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| Keywords: | yield viscoplastic fluid Herschel-Bulkley model non-Newtonian fluid flow annulus mathematical model |
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