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Effect of inertia and compressibility on the pressure drop oscillations of two-phase boiling flows in horizontal parallel channels

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Abstract

In this study, a mathematical model is developed to study Pressure drop oscillations (PDOs) in two horizontal parallel channels using lumped parameter model assuming a homogeneous two-phase flow model. This model investigates the effect of external parameters, such as fluid inertia and compressible gases, on the stability margins of PDOs. Results show that the fluid inertia and compressible gases have high impact on the stability margins of two parallel channels; in fact, increasing the inlet inertia and outlet compressibility increases system stability, while increasing the outlet inertia and inlet compressibility decreases system stability. Thus, increasing the sub-cooling number and inlet resistance coefficient improves stability behavior.

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Correspondence to Y. Bakhshan.

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Recommended by Associate Editor Ji Hwan Jeong

Y. Bakhshan received his B.Sc. degree in Mechanical Engineering from the University of Tabriz, Iran in 1993. He then received his M.Eng. and Ph.D. degrees from Shahid-Bahonar University, Kerman, Iran in 1996 and 2002, respectively. Currently he is an Associate Professor of Mechanical Engineering at Faculty of Engineering, University of Hormozgan, Bandar Abbas, Iran. His research interest includes thermodynamics, combustion engineering, applied fluid dynamics in micronano scale, and thermal engineering in micro-nano scale.

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Bakhshan, Y., Kazemi, S., Niazi, S. et al. Effect of inertia and compressibility on the pressure drop oscillations of two-phase boiling flows in horizontal parallel channels. J Mech Sci Technol 31, 4995–5009 (2017). https://doi.org/10.1007/s12206-017-0948-9

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  • DOI: https://doi.org/10.1007/s12206-017-0948-9

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