空気流体中で振動応答する二次元正方形角柱の付加質量効果に関する研究 その1　シミュレーション概要及び結果

田中 秀和; 西 将志; 神田 亮

doi:10.14887/jaweam.2009.0.33.0

Summaries to Technical Papers of Annual Meeting, Japan Association for Wind Engineering

Session ID : 169-170

DOI https://doi.org/10.14887/jaweam.2009.0.33.0

Conference information

Host: Japan Association for Wind Engineering

Study on the Added-Mass Effect for a 2D Square Prism under Response Vibration in Air Flow

Part1 Simulation and Results

*Hidekazu TANAKA, Masayuki NISHI, Makoto KANDA

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Keywords: Added-Mass Effect, New Hybrid Aerodynamic Vibration Technique, Aerodynamic Unstable Oscillation, Scruton Number, Density Ratio, Oscillation Velocity

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

This paper describes analysis of aerodynamic vibration of a square prism in two-dimensional flow,The simulation in conducted by means of New Hybrid Aerodynamic Vibration Technique.The analysis focuces the relation between the density ratio and oscillation velocity.The phenomenon of aerodynamic vibration in air flow depends on Scruton number that in formulated by the product of density ratio and damping parameter.However,the oscillation velocity is getting smaller with the density ratio getting smaller even though the Scruton numbers are similar.In this simulation,similar result was oftained,and the peak response frequency gets smaller than the natural frequency.

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