By M. S. Howe
Acoustics of Fluid-Structure Interactions addresses an more and more vital department of fluid mechanics--the absorption of noise and vibration via fluid stream. This topic, which deals a number of demanding situations to standard parts of acoustics, is of transforming into problem in locations the place the surroundings is adversely suffering from sound. Howe offers beneficial history fabric on fluid mechanics and the ordinary thoughts of classical acoustics and structural vibrations. utilizing examples, a lot of which come with whole labored recommendations, he vividly illustrates the theoretical innovations concerned. He presents the foundation for all calculations precious for the decision of sound new release via airplane, ships, basic air flow and combustion platforms, in addition to musical tools. either a graduate textbook and a reference for researchers, Acoustics of Fluid-Structure Interactions is a vital synthesis of knowledge during this box. it is going to additionally relief engineers within the thought and perform of noise keep watch over.
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However, if the frequency of slug injection is increased sufficiently, the extent of mixing in the axial direction also will increase due to the finite length of the wakes, and the residence time distribution of the liquid in the column will tend to approach that for a perfectly mixed tank for high enough values of slug frequency. Physical Modeling of Axial Mixing in Slugging Gas-Liquid Columns 59 B C D Figure 7. Diagrann of slugs and their wakes. Guedes de Carvalho et al. developed a mathematical model for this physical situation and compared the predictions of the model with the concentration curves at the outlet of the column, following a step change in tracer concentration at the inlet.
The torque was measured as a function of time. 0 Experimental Studies for Characterization of Mixing Mechanisms 29 Heater K;J Heater HAAKE INTERNAL MIXER (Rheomlx 750) NORMAL VIDEO CAMERA VIDEO RECORDER Figure 1. The schennatic view of trhe system for flow visualization in an internal mixer. the temperatures increased to 150°C to vulcanize the rubber compounds. The apparatus was subsequently cooled down, the rotors removed, and the disposition of the rubber determined. Other experiments were carried out to determine the circulation time within the mixer.
Of AppL Polym. , 50, p. 145 (1992). F. M. S. Teixeira Escola Superior Agraria Instituto Politecnico de Braganga Braganga, Portugal CONTENTS INTRODUCTION, 49 THE WAKES OF SLUGS, 50 Laminar Wakes, 51 Turbulent Wakes, 55 TAYLOR DISPERSION FOR LAMINAR LIQUID FLOW ALONG A TUBE, 57 AXIAL MIXING IN CO-CURRENT FLOW OF GAS AND LIQUID, 58 NOTATION, 64 REFERENCES, 65 INTRODUCTION Mixing of liquid in gas/liquid contactors is a topic of great practical interest to the chemical industry, especially since it may determine product yield in chemical reactors.