Fluid excitation forces acting on stationary cylinders with cross-flow are the coupling of vortex shedding and turbulence buffeting. Those forces are significant in the analytical framework of fluid-induced vibration in heat exchangers. A bench-scale experimental setup with an instrumented test bundle is constructed to measure fluid excitation forces acting on cylinders in the normal triangular tube arrays (P/D = 1.28) with water cross-flow. The lift and drag forces on stationary cylinders are measured directly as a function of Reynolds number with a developed piezoelectric transducer. The results show that the properties of fluid excitation forces, to a great extent, largely depend upon the locations of cylinders within bundle by comparison to the inflow variation. A quasi-periodic mathematical model of fluid excitation forces acting on a circular cylinder is presented for a tightly packed tube bundle subjected to cross-flow, and the bounded noise theory is applied between = 0.01 and = 1. The developed model is illustrated with lots of identification results based on the dominant frequency, the intensity of random frequency, and the amplitude of fluid excitation forces. A second model has been developed for fluid excitation forces between = 1 and = 6 with the spectrum index introduced. Although still preliminary, each model can predict the corresponding forces relatively well.
Fluid Excitation Forces on a Tightly Packed Tube Bundle Subjected in Cross-Flow
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received August 26, 2016; final manuscript received November 1, 2016; published online January 11, 2017. Assoc. Editor: Tomomichi Nakamura.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Liu, L., Feng, J., Wu, H., Xu, W., and Tan, W. (January 11, 2017). "Fluid Excitation Forces on a Tightly Packed Tube Bundle Subjected in Cross-Flow." ASME. J. Pressure Vessel Technol. June 2017; 139(3): 031307. https://doi.org/10.1115/1.4035318
Download citation file:
- Ris (Zotero)
- Reference Manager