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RISFluidelastic Instability of an Array of Tubes Preferentially Flexible in the Flow Direction Subjected to Two-Phase Cross Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Almost all the available data about fluidelastic instability of heat exchanger tube bundles concerns tubes that are axisymmetrically flexible. In those cases, the instability is found to be ...
Vibration Excitation Force Measurements in a Rotated Triangular Tube Bundle Subjected to Two-Phase Cross Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Two-phase cross flow exists in many shell-and-tube heat exchangers. Flow-induced vibration excitation forces can cause tube motion that will result in long-term fretting-wear or fatigue. Detailed ...
Further Study of Quasiperiodic Vibration Excitation Forces in Rotated Triangular Tube Bundles Subjected to Two-Phase Cross Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Two-phase cross flow exists in many shell-and-tube heat exchangers. Flow-induced vibration excitation forces can cause tube motion that will result in long-term fretting-wear or fatigue. Detailed ...
On the Virtual Nonexistence of Multiple Instability Regions for Some Heat-Exchanger Arrays in Crossflow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In fluidelastic analyses involving a time delay (or phase lag) between the motions of cylinders in an array and the resultant unsteady fluid forces on the cylinders, a succession of ...
A Nonlinear Dynamics Analysis of Vortex-Structure Interaction Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Vortex-structure interaction models are studied in the work presented here. The third- order model by Hartlen and Currie (HC model) can reproduce the correct response amplitude, while a fifth-order ...
Effect of Preferential Flexibility Direction on Fluidelastic Instability of a Rotated Triangular Tube Bundle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In operating shell-and-tube heat exchangers, tube vibration induced by cross-flow can be a serious problem. The region of concern in steam generators is the upper most U-bend region where the ...
Correlation Between Vibration Excitation Forces and the Dynamic Characteristics of Two-Phase Cross Flow in a Rotated-Triangular Tube Bundle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Two-phase cross flow exists in many shell-and-tube heat exchangers. Flow-induced vibration excitation forces can cause tube motion that will result in long-term fretting wear or fatigue. Detailed ...
Fluidelastic Instability in a Normal Triangular Tube Bundle Subjected to Air-Water Cross-Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the results of tests on the vibration of a normal triangular tube bundle subjected to air–water cross-flow. The pitch-to-diameter ratio of the bundle is 1.5, and the tube ...