Flow Induced Vibration Analysis of Grooved Cylinder in Heat Exchanger
Abstract
For enhancing the performance of Shell and Tube Heat Exchanger the impact of establishing a square groove along the length of a shell and tube heat exchanger is investigated experimentally. Therefore, an experimental investigation is conducted for turbulent cross-flow in a parallel triangular tube bundle with pitch to diameter P/D ratio of 1.45. The 300mm long cylinder is patterned with square grooves extending longitudinally. Tube bundles consist of 50 tubes with an average diameter of 12mm. Tubes are placed in a staggered pattern. There are two grooves, at 90° and 270°, on the outside of cylinder. These experiments are carried out in a wind tunnel that operates at subsonic speeds. The monitored tube response appears to be strongly influenced by its position inside a particular row in both the streamwise and transverse directions. Additionally, the third row plays a significant role in the early stability of the tube being monitored specifically in the transverse direction.
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