520 Numerical Analysis of Unsteady Fluid Dynamic Force Acting on Tube Bundle under Sound Pressure Field

2000 ◽  
Vol 2000.53 (0) ◽  
pp. 163-164
Author(s):  
Ayumu OKAMOTO ◽  
Hiroki TANAKA ◽  
Fumio SHIMIZU
Keyword(s):  
Numerical Analysis ◽  
Sound Pressure ◽  
Pressure Field ◽  
Tube Bundle ◽  
Fluid Dynamic ◽  
Dynamic Force ◽  
Unsteady Fluid

scholarly journals Study on Criterion of Acoustic Resonant Vibration with Unsteady Fluid Dynamic Force.

1999 ◽  
Vol 42 (3) ◽  
pp. 377-383
Author(s):  
Hiroki TANAKA ◽  
Kazuhiro TANAKA ◽  
Fumio SHIMIZU ◽  
Tohru IIJIMA
Keyword(s):  
Fluid Dynamic ◽  
Dynamic Force ◽  
Resonant Vibration ◽  
Unsteady Fluid

Unsteady fluid-dynamic force solely in terms of control-surface integral

2005 ◽  
Vol 17 (9) ◽  
pp. 098102 ◽  
Author(s):  
Jie-Zhi Wu ◽  
Ze-Liang Pan ◽  
Xi-Yun Lu
Keyword(s):  
Fluid Dynamic ◽  
Control Surface ◽  
Dynamic Force ◽  
Surface Integral ◽  
Unsteady Fluid

509 Unsteady Fluid Dynamic Forces Acting on Tube Bundle in Vibrating Flow

2001 ◽  
Vol 2001.54 (0) ◽  
pp. 135-136
Author(s):  
Kazuhiro MURAMASU ◽  
Hiroki TANAKA ◽  
Fumio SHIMIZU
Keyword(s):  
Tube Bundle ◽  
Fluid Dynamic ◽  
Dynamic Forces ◽  
Unsteady Fluid

scholarly journals Study on Criterion of Acoustic Resonant Vibration with Unsteady Fluid Dynamic Force.

1998 ◽  
Vol 64 (626) ◽  
pp. 3293-3298 ◽  
Author(s):  
Hiroki TANAKA ◽  
Kazuhiro TANAKA ◽  
Fumio SHIMIZU ◽  
Tohru IIJIMA
Keyword(s):  
Fluid Dynamic ◽  
Dynamic Force ◽  
Resonant Vibration ◽  
Unsteady Fluid

Fluid-Dynamic Force Characteristics of an Auto Rotating Flat Plate

2007 ◽  
Author(s):  
Takahiro Yasuda
Keyword(s):  
Flat Plate ◽  
Vortex Shedding ◽  
Fluid Dynamic ◽  
Vortex Method ◽  
Dynamic Force ◽  
Discrete Vortex ◽  
Dynamic Forces ◽  
Plate Rotation ◽  
Unsteady Fluid ◽  
Force Characteristics

When a thin flat pate is released in still air, the plate automatically sets into a rotational motion. This phenomenon is called autorotation. The autorotating flat plate is loaded by unsteady fluid-dynamic forces. It is guessed that the forces are contributed by one due to vortex shedding from the edges of the plate and one due to the plate rotation, but the detail force characteristics have not been clear yet. In this study, we calculated the two types of flow by the discrete vortex method, one is flow around a rotating flat plate hinged about its center at constant rotating frequency in the uniform flow and the other is flow around a freely falling flat plate. The computed result in both types of flow agree well with the experiment. In the case of freely falling plate, autorotation phenomena could be predicted. By computed fluid dynamic forces, the contributions of vortex shedding from the plate to fluid dynamic forces and feedback effect of the fluid dynamic forces were found.

Measurement of Flow-Induced Forces: A Single Flexible Tube in a Rigid Triangular-Pitch Bundle Subjected to Two-Phase Cross-Flow

2015 ◽  
Author(s):  
Enrico Deri ◽  
Joël Nibas ◽  
Olivier Ries ◽  
André Adobes
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Tube Bundle ◽  
Fluid Dynamic ◽  
Cross Flow ◽  
Maintenance Policy ◽  
Excitation Spectra ◽  
Two Phase ◽  
Force Coefficients ◽  
Out Of Plane

Flow-induced vibrations of Steam Generator tube bundles are a major concern for the operators of nuclear power plants. In order to predict damages due to such vibrations, EDF has developed the numerical tool GeViBus, which allows one to asses risk and thereafter to optimize the SG maintenance policy. The software is based on a semi analytical model of fluid-dynamic forces and dimensionless fluid force coefficients which need to be assessed by experiment. The database of dimensionless coefficients is updated in order to cover all existing tube bundle configurations. Within this framework, a new test rig was presented in a previous conference with the aim of assessing parallel triangular tube arrangement submitted to a two-phase cross-flow. This paper presents the result of the first phase of the associated experiments in terms of force coefficients and two-phase flow excitation spectra for both in-plane and out-of-plane vibration.

Direct Measurement of Unsteady Fluid Dynamic Forces for a Hovering Dragonfly

AIAA Journal ◽  
2005 ◽  
Vol 43 (12) ◽  
pp. 2475-2480 ◽  
Author(s):  
Manabu Yamamoto ◽  
Koji Isogai
Keyword(s):  
Direct Measurement ◽  
Fluid Dynamic ◽  
Dynamic Forces ◽  
Unsteady Fluid
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