@inproceedings{112c737904904207afd9a1cbb6fc26e0,
title = "FLOW INTERFERENCE BETWEEN TANDEM CYLINDER WITH FORCED CONVECTION IN STAGGERED POSITION",
abstract = "Flow-induced vibration of the filleted (rounded corner) oscillating cylinder is numerically investigated at Re=150 and Pr=0.7. The upstream cylinder (UC) is static while the downstream cylinder (DC) is elastically mounted which is allowed to vibrate in the transverse direction with a spacing ratio (L/D) =5 and staggered angle (∝) of 45°. Square cylinder is gradually filleted into the circular cylinder by changing r* (filleted radius)=0 (square cylinder), 0.5, 0.75 and 1(circular cylinder). Computations were carried out for reduced mass m∗ = 10 and varying reduced velocity (Ur)= 2, 4, 6, 8 and 10, structural damping constant is set to be zero which gives rise to high vibrational amplitude. Both cylinders were maintained at a constant temperature (T∗ = 1) while the upcoming flow is set to be at T∗ = 0. Vibrational characteristics are scrutinized with help of frequency characteristics of vibrating cylinder, vibrational amplitude, drag coefficient, lift coefficient and instantaneous z-vorticity contours. When natural frequency (fn) and vortex shedding frequency (fs) overlap, it causes synchronization or lock-in. The lock-in phenomenon usually occurred at Ur = 6 leading to higher vibrational amplitude for all geometries and dropped at Ur = 8 but persisted at Ur = 8 and 10 for r*=0. Due to higher vibrational amplitude, the flow structure is more complicated at Ur ≥ 6. The maximum value of average Nusselt number (Nuavg) is at Ur = 6 for circular DC, whereas the minimum lies at Ur = 2 for square upstream cylinder. Generated results envisage results of flow interferences and forced convection of tube arrays in heat exchangers and marine structures. Understanding the mechanisms of flow-induced vibration in staggered cylinders is crucial for designing and optimizing these systems, as well as for ensuring their safe and reliable operation.",
keywords = "FIV, Flow interference, Heated Cylinder, Staggered Position",
author = "Yuvraj Sarout and Md Islam and Yap, \{Yit Fatt\} and Isam Janajreh",
note = "Publisher Copyright: {\textcopyright} 2023 by ASME.; ASME 2023 Heat Transfer Summer Conference, HT 2023 ; Conference date: 10-07-2023 Through 12-07-2023",
year = "2023",
doi = "10.1115/HT2023-106964",
language = "British English",
series = "Proceedings of ASME 2023 Heat Transfer Summer Conference, HT 2023",
publisher = "The American Society of Mechanical Engineers(ASME)",
booktitle = "Proceedings of ASME 2023 Heat Transfer Summer Conference, HT 2023",
address = "United States",
}