Acoustic Vibration Behavior of Full Size Steam Generator and Tubular Heat Exchanger In-Line Tube Banks: A Brief Note

Abstract

Based on recent laboratory experimental data by Feenstra et al. (2004, “The Effects of Duct Width and Baffles on Acoustic Resonance in a Staggered Tube Array,” in Proceedings of the Eighth International Conference on Flow-Induced Vibration FIV 2004, E. de Langre and F. Axisa, eds., Paris France, Jul. 6–9, pp. 459–464; 2006, “A Study of Acoustic Resonance in a Staggered Tube Array,” ASME J. Pressure Vessel Technol., 128, pp. 533–540), it has been determined that for larger test section widths, the maximum acoustic pressures generated during acoustic resonance were greater by more than a factor of 4 than those predicted by Blevins and Bressler (1993, “Experiments on Acoustic Resonance in Heat Exchanger Tube Bundles,” J. Sound Vib., 164, 503–533). We have evaluated a great number of resonant and nonresonant cases from in-service experience of full size steam generator and tubular heat exchanger tube banks in order to see the general vibratory behavior of the full size units. Fifteen vibrating and twenty-seven nonvibrating cases were evaluated and compared to the Feenstra et al. relationship. It is shown that on average the results from the full size units correlate well with the relationship of Feenstra et al. A gap exists between the vibratory and the nonvibratory cases. The nonvibratory cases produce acoustic pressures, which are at or below the Blevins and Bressler relationship. From the results, it can be concluded that the full size units, regardless of their size and also acoustic mode, produce high acoustic pressures at resonance, with the maximum acoustic pressure on average more than 50–75 times higher than the input energy parameter defined by the product of Mach number and pressure drop through the tube bank. The results are tabulated and plotted for comparison.