To improve knowledge on the design and operational issues of heat exchangers used in the liquefaction process of liquefied natural gas (LNG), experiments were conducted to investigate the complex two-phase flow phenomena in an n-pentane environment. Special focus was placed on characterizing the impact thresholds (bouncing, coalescence, splashing, etc.) of n-pentane droplets impinging on a flowing liquid film of various angles. In the phase diagram of velocity and diameter, the threshold of splashing for n-pentane was found to be below that for water (i.e. lower translational energies lead to splashing). The splashing threshold was well-characterized by a model reported previously for water droplets on stationary surfaces, adjusted slightly for non-normal impacts, which is influenced greatly by the thickness of the liquid film. In addition, the bouncing threshold of n-pentane was found to decrease with higher liquid film velocities with a threshold generally lower than that of water.
- Fluids Engineering Division
Experimental Methods for Investigating the Discrete Droplet Impact Phenomena of a Model Fluid Relevant for LNG Heat Exchangers
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Brunsvold, AL, Ervik, Å, & Zhou, H. "Experimental Methods for Investigating the Discrete Droplet Impact Phenomena of a Model Fluid Relevant for LNG Heat Exchangers." Proceedings of the ASME 2013 Fluids Engineering Division Summer Meeting. Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives. Incline Village, Nevada, USA. July 7–11, 2013. V01CT17A003. ASME. https://doi.org/10.1115/FEDSM2013-16108
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