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《China Petroleum Machinery》 2004-01
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Dynamic characteristic analysis of circular cylinder with internal axial flow

Lai Yongxing (College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing), Liu Minshan, Dong Qiwu.  
By establishing the vibration equation of the circular cylinder with internal axial flow, the analysis formula of the circular cylinder is derived, thereby the reduced coefficient of the natural frequency produced by the centrifugal force of the flow in the cylinder is defined. The centrifugal force of the flow in the cylinder has remarkable effect on the natural frequency only when the flow rate is high and the rigidity of the cylinder is small. If the flow rate is low and the rigidity of the cylinder is fairly high, the effect of the centrifugal force on the natural frequency can be neglected, only the effect of the inertial force of the flow should be considered. The centrifugal force of the flow in the cylinder has great effect on the low-order natural frequency, and may have remarkable influence on high-order natural frequency when the flow rate is high and cylinder's rigidity is low. The above conclusions can be used as reference of chemical engineering equipments, such as heat exchangers.
【Fund】: 河南省科技攻关项目资助 (0 1110 3 15 0 0 )
【CateGory Index】: TK172
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 Zhao Guoqiao;Analysis of Fluid-Solid Coupling Vibration in Pipelines[J];Petroleum Refinery Engineering;1995-03
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Chinese Journal Full-text Database 2 Hits
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