Aerodynamic vibration of combined rigid bodies due to leakage flow (the effect of body shapes and support condition)

Shigehiko Tanaka; Takashi Hirata; Shigehiko Kaneko; Tatsuo Watanabe

Aerodynamic vibration of combined rigid bodies due to leakage flow (the effect of body shapes and support condition)

Shigehiko Tanaka, Takashi Hirata, Shigehiko Kaneko, Tatsuo Watanabe

Research output: Contribution to journal › Conference article › peer-review

Abstract

We carried out experiments using a model equipment composed of combined rigid bodies and a tunnel wall which forms leakage flow channel in order to simulate the aerodynamic oscillations of high speed train observed in a tunnel section, and examined the relationship between the instability and the effect of such parameters as head shapes of both leading and trailing car bodies, equilibrium position and so on. As a result of the experiment, minute vibration with yawing mode and two types of unstable phenomena were observed in the specific flow velocity region. Especially, head shape of trailing car body, clearance between the tunnel and car bodies and equilibrium position were found to be major factors that have a large effect on the instability.

Original language	English
Pages (from-to)	45-52
Number of pages	8
Journal	American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume	420 II
Publication status	Published - 2001 Dec 1
Externally published	Yes
Event	2001 ASME Pressure Vessels and Piping Conference - Atlanta, GA, United States Duration: 2001 Jul 22 → 2001 Jul 26

ASJC Scopus subject areas

Mechanical Engineering

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Aerodynamic vibration of combined rigid bodies due to leakage flow (the effect of body shapes and support condition). / Tanaka, Shigehiko; Hirata, Takashi; Kaneko, Shigehiko; Watanabe, Tatsuo.

In: American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, Vol. 420 II, 01.12.2001, p. 45-52.

Research output: Contribution to journal › Conference article › peer-review

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abstract = "We carried out experiments using a model equipment composed of combined rigid bodies and a tunnel wall which forms leakage flow channel in order to simulate the aerodynamic oscillations of high speed train observed in a tunnel section, and examined the relationship between the instability and the effect of such parameters as head shapes of both leading and trailing car bodies, equilibrium position and so on. As a result of the experiment, minute vibration with yawing mode and two types of unstable phenomena were observed in the specific flow velocity region. Especially, head shape of trailing car body, clearance between the tunnel and car bodies and equilibrium position were found to be major factors that have a large effect on the instability.",

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AU - Tanaka, Shigehiko

AU - Hirata, Takashi

AU - Kaneko, Shigehiko

AU - Watanabe, Tatsuo

PY - 2001/12/1

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N2 - We carried out experiments using a model equipment composed of combined rigid bodies and a tunnel wall which forms leakage flow channel in order to simulate the aerodynamic oscillations of high speed train observed in a tunnel section, and examined the relationship between the instability and the effect of such parameters as head shapes of both leading and trailing car bodies, equilibrium position and so on. As a result of the experiment, minute vibration with yawing mode and two types of unstable phenomena were observed in the specific flow velocity region. Especially, head shape of trailing car body, clearance between the tunnel and car bodies and equilibrium position were found to be major factors that have a large effect on the instability.

AB - We carried out experiments using a model equipment composed of combined rigid bodies and a tunnel wall which forms leakage flow channel in order to simulate the aerodynamic oscillations of high speed train observed in a tunnel section, and examined the relationship between the instability and the effect of such parameters as head shapes of both leading and trailing car bodies, equilibrium position and so on. As a result of the experiment, minute vibration with yawing mode and two types of unstable phenomena were observed in the specific flow velocity region. Especially, head shape of trailing car body, clearance between the tunnel and car bodies and equilibrium position were found to be major factors that have a large effect on the instability.

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