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Wind and Structures Volume 1, Number 3, September 1998 , pages 243-253 DOI: https://doi.org/10.12989/was.1998.1.3.243 |
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Numerical analysis of interference galloping of two identical circular cylinders |
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E. Blazik-Borowa and A. Flaga
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| Abstract | ||
| The paper deals with numerical analysis of interference galloping of two elastically supported circular cylinders of equal diameters. The basis of the analysis is quasi-steady model of this phenomenon. The model assumes that both cylinders participate in process of interference galloping and they have two degrees of freedom. The movement of the cylinders is written as a set of four nonlinear differential equations. On the basis of numerical solutions of this equations the authors evaluate the correctness of this quasi-steady model. Then they estimate the dependence of a critical reduced velocity on the Scruton number, turbulence intensity and arrangements of the cylinder. | ||
| Key Words | ||
| aerodynamic interference; a cylinder, interference galloping; the quasi-steady theory; the numerical analysis. | ||
| Address | ||
| Department of Structural Mechanics, Faculty of Civil and Sanitary Engieering, Lublin Technical University, ul Nadbystrzycka 40, 20-618 Lublin, Poland | ||