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Title
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Turbulence dissipation and its induced entrainment in subsonic swirling steam injected in cocurrent flowing water
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Sub-Title |
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Subject |
Swirling steam Turbulence Dissipation Entrainment Scale Vortices
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Sub-Subject |
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Author |
Afrasyab Khan, Mohd Sobri Takriff, Masli Irwan Ros
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Publish Year |
2019 |
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Supervisor |
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Diss#. |
https://doi.org/10.1016/j.ijheatmasstransfer. 2019 |
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Pages |
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Text Language |
English |
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Accession |
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Library Section |
Research Article |
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Abstract |
Subsonic swirling steam induced turbulence, its dissipation, and entrainment inside the concurrent flowing
water has been investigated on an experimental basis. Pressure fluctuations of dissimilar amplitudes
have been observed which have been attributed to the vortices and hence instances for entrainment on a
spatial basis. The extent of turbulence dissipation has been measured by the rate of decrement of the
smallest pressure fluctuation of amplitude 0.04 bars. It has been observed that the turbulence dissipation
along radial direction rises from 2.3 to 6.3 fluctuations/cm with rising in the inlet pressure of steam & till
12.5 fluctuations/cm in case of rising in rpm of the swirler. On a temporal scale, the turbulence dissipation
varies from 0.7 fluctuations/sec at initial conditions which rise till 1.9 fluctuations/sec with the rise
in inlet pressure of steam & 3.7 fluctuations/sec in case of rising in rpm of the swirler. Effect of rising in
compressibility & rpm on sheer layer trans
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