Brownian Dynamics Simulation of Microstructures and Elongational Viscosities of Micellar Surfactant Solution
WEI Jin-Jia1, KAWAGUCHI Yasuo2, YU Bo3, LI Feng-Chen4
1State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 7100492Department of Mechanical Engineering, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 2788-510, Japan3Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum (Beijing), Beijing 1022494School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001
Brownian Dynamics Simulation of Microstructures and Elongational Viscosities of Micellar Surfactant Solution
WEI Jin-Jia1, KAWAGUCHI Yasuo2, YU Bo3, LI Feng-Chen4
1State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 7100492Department of Mechanical Engineering, Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 2788-510, Japan3Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum (Beijing), Beijing 1022494School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001
Brownian dynamics simulation is conducted for a dilute surfactant solution under a steady uniaxial elongational flow. A new inter-cluster potential is used for the interaction among surfactant micelles to determine the micellar network structures in the surfactant solution. The micellar network is successfully simulated. It is formed at low elongation rates and destroyed by high elongation rates. The computed elongational viscosities show elongation-thinning characteristics.The relationship between the elongational viscosities and the microstructure of the surfactant solution is revealed.
Brownian dynamics simulation is conducted for a dilute surfactant solution under a steady uniaxial elongational flow. A new inter-cluster potential is used for the interaction among surfactant micelles to determine the micellar network structures in the surfactant solution. The micellar network is successfully simulated. It is formed at low elongation rates and destroyed by high elongation rates. The computed elongational viscosities show elongation-thinning characteristics.The relationship between the elongational viscosities and the microstructure of the surfactant solution is revealed.
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2008, Vol. 25 
