Tag: XVIB

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TT-31 Beware of flow obstructions in inlet and outlet regions

February 14, 2023

Component: Xist, Xvib Applicable to: All supported versions (Version 8.2 and Version 9.x) Date posted: 14 February 2023  Flow obstructions in the inlet and outlet regions can invalidate the Xist bundle entrance and exit velocities and thus impact the rho-V2 calculations. The Xist vibration analysis for shell and bundle entrance and exit...
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• SEAL STRIPS
• VIBRATION
• MECHANICAL DESIGN
• FLOW-INDUCED VIBRATION
• FLOW DISTRIBUTION
• XVIB
• XIST
• TECHTIP

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Getting Started: Building Your First Case in Xvib

September 28, 2022

If you're new to Xvib, or simply need a refresher, this webinar will help you. The webinar provides an overview of how Xvib works so that you can use it to analyze the vibration potential—both fluidelastic instability and vortex shedding amplitude—of a specific tube in the bundle of a shell-and-tube heat...
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• XVIB
• GETTING STARTED

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Beyond the Basics: Getting the Most Out of Xvib

January 30, 2018

Xvib is an advanced tool for tube vibration study. This webinar discusses some specific aspects of Xvib inputs that can be adjusted for a more accurate vibration analysis....
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• VIBRATION
• XVIB

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STV-16 Calculating Fluidelastic Instability of U-Tubes Near Inlet Nozzles

January 16, 2017

The challenges of a rules-based vibration screening in Xist® have often led to excessive conservatism for U-tubes positioned near the inlet nozzle. In this study, we simulated shellside diabatic flow over the U-bend portion of the bundle for a number of nozzle locations using computational fluid dynamics (CFD). Using the simulation...
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• XVIB
• XIST
• VIBRATION
• CFD

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STV-15 Select Crossflow Velocity Distributions for Analyzing Tube Vibration Potential

January 16, 2017

Both the value and distribution of velocity along each span are important for proper assessment of tube vibration potential. Because of the disparity in spatial resolution between the small-scale finite element structural model of Xvib® and the larger scale incrementation scheme of Xist®, engineering judgment is required to populate the important...
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• XVIB
• XIST
• VIBRATION
• CFD

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