Use is made of computer simulated turbulent signals to calculate the rms of the velocity cone angle. The calculation compares favourably with X-probe data close to the axis of a circular jet. In this flow, the vector cone angle can exceed 90 ~ even on the axis. As a consequence, the rms values of th
Settling velocity of droplets in turbulent flows
β Scribed by J. Kubie
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 686 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0009-2509
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β¦ Synopsis
Two parameters of particle or droplet dynanucs wluch are of importance m descnbrng theu behawour m turbulent pipe flows are them setthng velocity and eddy drflusivlty It IS usually assumed that the setthng velocrty tn turbulent Row IS equal to that m still flurd and on the basis of this assumption the eddy dtiusivtty IS usually determmed expenmentally from the dtstnbutron of droplets or particles m horuontal turbulent flow Smce the stttlmg velocity has a strong influence on the resultant value of the eddy dtiusrvity, the mflucnce of turbulence on settlma ve!ocltv IS mvestmated m this work A sunole stochastic model of setthnn m turbulent flow IS develooed and it-is sho& that a cksiderable retardanon 0; stdl con&ions fluid settling velocity I; possible for a wide range of
π SIMILAR VOLUMES
Velocity bias effects on data obtained with a coincident two channel laser Doppler velocimeter in a highly turbulent separated supersonic flow are presented. Probability distributions of the fluctuating velocities were distorted by velocity bias in a manner consistent with theory and a two-dimension