ANALYSIS OF CROSS-FLOW INDUCED VIBRATION IN AN INLINE AND STAGGERED CONFIGURATION

Vimal D. Tandel, Rajesh V. Patil

Abstract: In many engineering applications like heat exchanger, radiator, evaporator, nuclear power plant and thermal power plant, arrangement of tubes is very crucial. Fluid elastic instability forms the basis for deciding the type of arrangement and tube spacing but the phenomenon of vortex induced vibration is random in nature. Tube spacing also plays a critical role in different types of arrangement. Different type of application requires different tube spacing and the range of tube spacing vary from 1 to 6. Vortex Induced Vibration in cross flow around the inline and staggered arrangement of the tube arrays is experimentally studied for varying P/d (tube spacing) ratio. It is observed that with the increase in the velocity, the amplitude displacement increases. As the amplitude displacement of the tube reduces, the pitch over diameter ratio is increased from 2 to 4. It is also observed that between inline and staggered arrangement, the amplitude displacement of staggered arrangement is more compared to inline arrangement for same tube spacing.

Keywords: Vortex Induced Vibration, Inline Arrangement, Staggered Arrangement, Regression Analysis

DOI: https://doi.org/10.15623/ijret.2015.0401067