Study of Steam-Induced Convection in a Rotating Vertical Flow Channel

Mohammed Zwawi (), Afrasyab Khan, Ali Bahadar and Mohammed Algarni
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Mohammed Zwawi: Department of Mechanical Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Afrasyab Khan: Research Institute of Mechanical Engineering, Department of Vibration Testing and Equipment Condition Monitoring, South Ural State University, Lenin Prospect 76, 454080 Chelyabinsk, Russia
Ali Bahadar: Department of Chemical and Materials Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Mohammed Algarni: Department of Mechanical Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia

Mathematics, 2022, vol. 11, issue 1, 1-18

Abstract: The phenomenon of steam–water direct contact condensation has significance in a wide range of industrial applications. Superheated steam was injected upward into a cylindrical water vessel. Visual observations were conducted on a turbulent steam jet to determine the dimensionless steam jet length compared to the steam nozzle exit diameter and the steam maximum swelling ratio as a function of steam mass flux at the nozzle exit, with a gas steam flux ranging from 295–883 kg/m 2 s. The Reynolds number based on the steam jet’s maximum expansion ranged from 41,000 to 93,000. Farther above of the condensation region, the jet evolved as a single-phase heated plume, surrounded by ambient water. Mean axial central velocity profiles were determined against the steam mass flux ranging from 295–883 kg/m 2 s to observe the exponential drop in the mean axial velocity as the vertical distance increased. The radial velocity distribution within the spread of the jet was determined to be self-similar, and the radial distribution of the velocity profile followed the Gaussian function, after the proper scaling of the vertical distance and the axial mean velocity.

Keywords: DCC steam injection; single-phase thermal plume; mean axial velocity; plume Richardson number (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
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