Paper Title:
Research on Torsional Vortex Resonance of a Streamlined Bridge Girder
  Abstract

The vortex resonance characteristics of one typical streamlined bridge girder are studied using surface pressure measuring technique. Based on the testing results in smooth and turbulent flows with different attack angles, the means, standard deviations, power spectra of fluctuated pressures, as well as the correlations between local and total aerodynamic forces are comprehensively analyzed, and the torsional vortex vibration mechanism is disclosed. The research results indicate that, for the vortex resonance case, the flow separation at upper and lower surfaces is more severe than that of non-vortex case. The upper surface pressure fluctuation at the middle and downstream region is most obvious, which is incurred by the flow separation at the upper surface upstream tip. At the middle and downstream region, the aerodynamic forces keep good correlations with the total forces, and they provide the major torsional moment for vortex resonance. Vortex vibration depends on both fluctuation intensity and peak location. For the vortex resonance case, the surface fluctuated pressures are locked in the same frequencies.

  Info
Periodical
Advanced Materials Research (Volumes 163-167)
Edited by
Lijuan Li
Pages
4109-4113
DOI
10.4028/www.scientific.net/AMR.163-167.4109
Citation
F. Y. Xu, Y. N. Li, Z. X. Lin, Z. Zhang, "Research on Torsional Vortex Resonance of a Streamlined Bridge Girder", Advanced Materials Research, Vols. 163-167, pp. 4109-4113, 2011
Online since
December 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Guang Lin He, Xiao Lin Li
Modeling, Analysis and Simulation of Manufacturing Processes
Abstract:The influence of centerline and the cross-section variation to aerodynamic performance of the inlet was researched in a wider range. A new...
349
Authors: Xiao Yang Lu, Xiao Li Lu, Li Li Huang, Yi Min Xu, Ying Yue Liu
Chapter 1: Material Engineering and its Application
Abstract:The internal pressure analytical model of elbow pipe and the research conclusions, which were established after the study of the influence...
192
Authors: Jun Xu, Xing Xing Chen, Gui Lei Wang, Yao Dong Wei
Chapter 3: Modeling, Analysis and Simulation
Abstract:The experiment is carried out in a 13-meter-high circulating fluidized bed(CFB) to investigate gas-solid two-phase flow by pressure sensor....
610
Authors: Zhi Cai Jiang, Xue Ding, Hang Zhao, Zhong Di Su
Chapter 7: Transmission and Control of Fluid
Abstract:The pressure drop transfer standard is a major measurement element in the pressure drop measurement device as a traceability element. This...
1105
Authors: Jian Mei Ding, Xiang Bing Zhang, Lu Ding Kou
Chapter 5: Measurements, Monitoring and Sensor
Abstract:According to the working process of dynamic throttling element flowmeter, the Reynolds number keeps constant when the flow is steady. The way...
1218