Transcription of Chapter 5 Dimensional Analysis and Similarity
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Chapter 5 Dimensional Analysis and Similarity
This Chapter we discuss the planning, presentation, and interpretationof experimental data. We shall try to convince you that such data are best presented indimensionless form. Experiments which might result in tables of output, or even mul-tiple volumes of tables, might be reduced to a single set of curves or even a singlecurve when suitably nondimensionalized. The technique for doing this is 3 presented gross control-volume balances of mass, momentum, and en-ergy which led to estimates of global parameters: mass flow, force, torque, total heattransfer.
tween the model and the prototype. In the simple case of Eq. (5.1), similarity is achieved if the Reynolds number is the same for the model and prototype because the function g then requires the force coefficient to be the same also: If Re m Re p then C Fm C Fp (5.3) where subscripts m and p mean model and prototype, respectively. From the ...
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