scope:

The objective of the first project was to develop a model to formulate damping in two-phase cross-flow. The model is based on information available in the literature and particularly on the results of a recently completed comprehensive experimental program. The report outlines the compilation of the data base, the development of a semi-empirical model, and the formulation of design guidelines for the calculation of tube damping due to two-phase flow. The second report presents the results of basic experimental work involving acoustic resonance and how that work produced practical design methods for heat exchangers. The report covers laboratory experimental results for single tubes, tube rows, and full tube arrays and presents an acoustic resonance heat exchanger design guide as well as an example which includes field measurements from a large resonating petrochemical heat exchanger. Publication of this Bulletin - WRC Bulletin No. 389 was sponsored by the Committee on Dynamic Analysis and Testing of the WRC Pressure Vessel Research Council