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RISModeling of Streamwise and Transverse Fluidelastic Instability in Tube Arrays
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The development of a theoretical model for fluidelastic instability (FEI) in tube arrays is presented. Based on the simple model of Lever and Weaver, it considers a group of seven tubes which move in both the streamwise ...
The Effect of Flat Bar Supports on Streamwise Fluidelastic Instability in Heat Exchanger Tube Arrays
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flowinduced vibration is an important criterion for the design of heat exchangers in nuclear, fossil, and chemical plants. Of the several known vibration excitation mechanisms, fluidelastic instability (FEI) is the most ...
An Experimental Model Study of Steam Generator Tube Loading During a Sudden Depressurization
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the results of an experimental model study of the transient loading of steam generator tubes during a postulated main steam line break (MSLB) accident in a nuclear power plant. The problem involves ...
Instrumentation Development and Validation for an Experimental Two Phase Blowdown Facility
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental facility was designed and built to study the loading on steam generator tubes during a blowdown. The facility used refrigerant R134a and measurements were taken for static and dynamic pressures as well as ...
An Experimental Study of Flow Induced Vibration and the Associated Flow Perturbations in a Parallel Triangular Tube Array
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The results of an experimental investigation of the flow perturbations associated with tube vibrations along the interstitial flow path are presented. A parallel triangular tube array consisting of seven rows and six columns ...
Pitch and Pattern Effects on Streamwise Fluidelastic Instability in Tube Arrays
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fluidelastic instability (FEI) is well known to be a critical flow-induced vibration concern for the integrity of the tubes in nuclear steam generators. Traditionally, this has been assumed to occur in the direction ...
Numerical Prediction of the Streamwise Fluidelastic Instability
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recent experimental investigations have shown that tube arrays can become unstable in the streamwise direction. This is contrary to the long-held notion that fluidelastic instability is only a concern in the direction ...
Investigation of Fluidelastic Instability in Normal Triangular Tube Arrays Subjected to Air Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This work presents the results of an experimental investigation of fluidelastic instability (FEI) in a normal triangular array. Several tube array configurations were considered, including a single flexible tube, a row of ...
Effect of Pitch Ratio and Tube Support Conditions on the Dynamic Behavior of a Low Mass-Damping Parameter Parallel Triangular Array
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To better explain the basic aspects of fluidelastic instability (FEI) in tube arrays, a rigorous research program has been initiated. In this research, the authors executed a series of water-flow experiments utilizing a ...
Investigation of Fluidelastic Instability in Parallel Triangular Tube Arrays Subjected to Air Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: One of the major considerations in the design and operation of heat exchangers is the flow-induced vibration (FIV). While there are multiple FIV excitation mechanisms, fluidelastic instability (FEI) is by far the most ...