Stability of core-annular flow of power-law fluids in the presence of interfacial surfactant |
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Authors: | SUN XueWei PENG Jie & ZHU KeQin |
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Institution: | SUN XueWei,PENG Jie & ZHU KeQin Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China |
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Abstract: | The shear-thinning influence on the core-annular flow stability of two immiscible power-law fluids is considered by making a linear stability analysis.The flow is driven by an axial pressure gradient in a straight pipe with the interface between the two fluids occupied by an insoluble surfactant.Given the basic flow for this core-annular arrangement,the analytical solution is obtained with respect to the power-law fluid model.The linearized equations for the evolution of infinitesimal disturbances are deriv... |
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Keywords: | core-annular flow power-law fluid interfacial surfactant linear stability analysis |
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