Flow characterization near the nozzle exit of the supersonic steam jet injecting into the stagnant water
Joint Authors
Rigit, Andrew Ragai Henry
Sanaullah, Khairuddin
Khan, Afrasyab
Zawawi, Muhammad
al-Qurani, Muhammad
Filimban, Basim F.
Bahadar, Ali
Faruqi, Ahmad Salam
Ata Allah
Source
Issue
Vol. 48, Issue 4 (31 Oct. 2021), pp.1-5, 5 p.
Publisher
Kuwait University Academic Publication Council
Publication Date
2021-10-31
Country of Publication
Kuwait
No. of Pages
5
Main Subjects
Abstract EN
There has been a large amount of work being conducted on the thermo-dynamics of the direct contact condensation (DCC), however, not much attention was given to the phenomena particularly active near the steam’s nozzle exit.
a transparent rectangular upright duct of 4 ft high, was built with a supersonic nozzle positioned at the bottom of the channel to characterize flow behavior near the steam nozzle’s exit.
particle image velocimetry (PIV) was applied to draw information on the steam’s jet penetration into the water as well as the entrainment and mixing between the two phases under the steam’s inlet pressure ranging from 1.5 – 3.0 bars.
PIV normalized contour measurements depicted not appreciable changes in the radial velocity of the jet.
Whereas, in the core region of the jet, the change in the jet’s velocity was not much till Y/De ~ 4.3 and the vertical velocity of the jet decreased slowly till Y/De ~ 8.
the jet’s normalized upward velocity attained an optimized value between Y/De ~ 8 and Y/De ~ 9.8.
With varying pressures, 1.5 bars to 3.0 bars, the jet expanded radially in water.
It was also found in the near nozzle exit region, the shear layer’s thickness remained within 0.2 – 0.5 De over the 1.5 – 3.0 bars pressure.
probability density function (PDF) analysis of reynolds shear and normal stresses confirmed the existence of the velocity fluctuations across the shear layer, owing to the large eddies across the steam-water interface.
American Psychological Association (APA)
Khan, Afrasyab& Sanaullah, Khairuddin& Zawawi, Muhammad& al-Qurani, Muhammad& Filimban, Basim F.& Bahadar, Ali…[et al.]. 2021. Flow characterization near the nozzle exit of the supersonic steam jet injecting into the stagnant water. Kuwait Journal of Science،Vol. 48, no. 4, pp.1-5.
https://search.emarefa.net/detail/BIM-1502298
Modern Language Association (MLA)
Khan, Afrasyab…[et al.]. Flow characterization near the nozzle exit of the supersonic steam jet injecting into the stagnant water. Kuwait Journal of Science Vol. 48, no. 4 (Oct. 2021), pp.1-5.
https://search.emarefa.net/detail/BIM-1502298
American Medical Association (AMA)
Khan, Afrasyab& Sanaullah, Khairuddin& Zawawi, Muhammad& al-Qurani, Muhammad& Filimban, Basim F.& Bahadar, Ali…[et al.]. Flow characterization near the nozzle exit of the supersonic steam jet injecting into the stagnant water. Kuwait Journal of Science. 2021. Vol. 48, no. 4, pp.1-5.
https://search.emarefa.net/detail/BIM-1502298
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 3-5
Record ID
BIM-1502298