An analytical solution to annular pipe flow of the second fluid and Maxwell fluid is given using Weber integral transform. The formulas can be used to analyse the behavior of unsteady flow of viscoelastic fluid in ann...An analytical solution to annular pipe flow of the second fluid and Maxwell fluid is given using Weber integral transform. The formulas can be used to analyse the behavior of unsteady flow of viscoelastic fluid in annular pipe, especially to analyse the flow character of double-gap concentric cylinder rheometer. It is found by computation that when the outer cylinder is in simple periodic motion, there are step junctions along the history curve of Maxwell fluid’s velocity and shear stress, and at step junctions both amplitude and phase of oscillatory wave vary sharply; when the outer cylinder makes uniform rotation, the velocity and shear stress of Maxwell fluid exhibit rhombic wave oscillation, and its period is in close parabolic relation with material constant H.展开更多
The Chinese character compenents- "nü" is among these which are collected most in the book "Analytical Interprection of Characters". According to the two hundreds characters it collected and X...The Chinese character compenents- "nü" is among these which are collected most in the book "Analytical Interprection of Characters". According to the two hundreds characters it collected and Xushen’s illustration, we can conclude that the change of Chinese ancient women’s social status was clearly reflected in the culture Chinese character.展开更多
文摘An analytical solution to annular pipe flow of the second fluid and Maxwell fluid is given using Weber integral transform. The formulas can be used to analyse the behavior of unsteady flow of viscoelastic fluid in annular pipe, especially to analyse the flow character of double-gap concentric cylinder rheometer. It is found by computation that when the outer cylinder is in simple periodic motion, there are step junctions along the history curve of Maxwell fluid’s velocity and shear stress, and at step junctions both amplitude and phase of oscillatory wave vary sharply; when the outer cylinder makes uniform rotation, the velocity and shear stress of Maxwell fluid exhibit rhombic wave oscillation, and its period is in close parabolic relation with material constant H.
文摘The Chinese character compenents- "nü" is among these which are collected most in the book "Analytical Interprection of Characters". According to the two hundreds characters it collected and Xushen’s illustration, we can conclude that the change of Chinese ancient women’s social status was clearly reflected in the culture Chinese character.
