Digitale Medien
Springer
Experiments in fluids
13 (1992), S. 155-162
ISSN:
1432-1114
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Maschinenbau
Notizen:
Abstract Subject of this paper is the effect of air temperature on the characteristics of a hot wire. Hot wires of four different lengths have been calibrated over a range of air temperatures from 20 °C to 60 °C. Finite wire length corrections that account for the effects of heat conduction at the ends have been applied to obtain the heat transfer characteristics of an infinitely long heated wire. The reduced data show that the dependence of the heat transfer from an infinitely long heated wire on fluid temperature is such that the Nusselt number vs. Reynolds number relationship, when these are evaluated with property values at the “film temperature”, do not collapse to a single curve. The reduced data show that a linear variation of the heat transfer with a temperature difference corresponds more closely to the experimental observations.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00218162
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