Instrumentation for mixing studies.

J. Ormay, L. Somlyody

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The punched tape data storage unit and its applications are described. The storage unit can be combined with the Delft current meter used in laboratory mixing studies or with a concentration meter connected to some type of digital voltage meter. The time of velocity measurement may be 0,2 0,284, 0,5 and 1,0 second , whereas that of concentration measurement is 0,284 second . The punched tape may be used directly as input for the mathematical-statistical analysis of data series on a Hewlett-Packard 9810 A desk computer. The application of the instruments and of the storage unit is illustrated by sensitivity tests on the velocity - and conductivity meter, further by some measurements of pulsation characteristics. The results of these investigations have demonstrated the suitability of the equipment developed for tracing random fluctuations. In this way it has become possible to correlate the results of tracer studies with turbulence conditions, as well as to assess the effect of variations. At the same time the authors determine quantities that provide information even without tracer studies on the diffusion coefficients and on the pattern of mixing. (A)

Original languageEnglish
Journal[No source information available]
Publication statusPublished - Jan 1 1977


ASJC Scopus subject areas

  • Engineering(all)

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