926 resultados para Friction coefficient
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Photoprinted.
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"The work described has been carried out in the Engineering Department of the National Physical Laboratory."--Acknowledgements.
Research on developing design criteria for anti-friction airframe bearings for high temperature use.
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"This report was prepared by the Research and Development Department of the New Departure Division, General Motors Corporation in Bristol, Connecticut."
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"Contract no. AF 18(600) 1000. File no. 10-16. AFOSR-TR-57-11. ASTIA AD 120411. Cornell University, Department of Engineering Physics."
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Mode of access: Internet.
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Thesis (doctoral)--Universite de Geneve.
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Mode of access: Internet.
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Includes bibliographical references (p. 15)
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The pumping characteristics of four Australian honey samples were investigated in a straight pipe. Six flow rates (100-500 kg h(-1)) were studied at three temperatures (35-50degreesC). The pressure loss increased with an increase in the length of the pipe, as the low rate was increased and as the temperature was reduced. In the 25.4 mm-pipe, the Reynolds number ranged from 0.2-32.0 and are substantially less than the critica value (2040-2180) for laminar condition in the system. The relationship between the wall shear stress and shear rate approximated power-law behaviour, and the power-law index was not significantly (p>0.05) different from 1.0. The honey samples exhibited Newtonian behaviour at all the temperatures and this was confirmed by rheometric studies using Couette geometry. A friction chart was generated independent of temperature and the type of honey. An equation was developed to predict the pressure loss of the honey in a typical pipeline at any temperature once the viscosity-temperature relationship had been established.