Drag Coefficient of a Rigid Spheriod Moving Normal to a Plane
Date Issued
2007
Date
2007
Author(s)
Chen, Jung-Chieh
DOI
zh-TW
Abstract
A spheroid moves perpendicularly to the plane in a fluid governed by both the Carreau fluid and Newtonian fluid was presented in this study. In the present work, FIDAP which is based on the Galerkins method has been used to obtain a numerical solution for the drag coefficient and the drag force of the particles. There are several important variables for both Carreau and Newtonian fluid in this problem, such as the distance between the particles and the plane, spheroidal shape factor a/b, and Reynolds number. Also, the characteristics of Carreau fluid such as Cu and n are discussed in this work. These can be used to make a discussion for how the drag coefficient influenced by changing those variables.
Finally, deriving a simple correlation gives a good approximation to the drag coefficient of a spheriodal particle at both the Carreau fluid and Newtonian fluid. The percentage deviation is under 7% for the low Reynolds number.
Subjects
拖曳係數
橢球
平板
drag coefficient
spheroid
plane
Type
thesis
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