Experimental investigation on the thermo-hydrodynamics of oscillatory meniscus in a capillary tube using FC-72 as working fluid

Recklin, Viktor; Pattamatta, Arvind; Stephan, Peter

doi:10.1016/j.ijmultiphaseflow.2015.05.011

Cited by 6 publications

(6 citation statements)

References 7 publications

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“…Two oscillation regimes have been predicted [122]. In the first regime, as observed experimentally [54,75,125,134], the meniscus oscillations are quasi-sinusoidal (Fig. 5a).…”

Section: Experimental Validation Of the Single Branch Php Modelssupporting

confidence: 55%

“…One can see that such a system represents a kind of a "unit cell" (a unique bubble-plug couple) for a more complex multi-branch PHP. Several experiments have been conducted in vertical [55,74,75,104,133,134] and horizontal [54,122,125] orientations.…”

Section: Interaction Between Bubble or Plug Pairsmentioning

confidence: 99%

“…This is a nonphysical result. Indeed, when an experimentalist wants to start-up a single-branch PHP, the meniscus is brought precisely to the evaporator or adiabatic section [75,134].…”

Section: "Superheated Vapor" Modelingmentioning

confidence: 99%

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Physical principles and state-of-the-art of modeling of the pulsating heat pipe: A review

Nikolayev

2021

Applied Thermal Engineering

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The Pulsating (called also oscillating) Heat Pipe (PHP) is a high performance passive heat transfer device. It consists in a closed capillary channel folded into several meanders, evacuated, and partially filled with a liquid and its vapor. One side is in thermal contact with a hot spot, the other with a cold spot. The oscillation of the liquid plugs and vapor bubbles spontaneously occurs after the heating beginning. The heat exchange takes place not only by latent heat transfer, but also by liquid convection. Both this advantage and the PHP structural simplicity make it competitive with respect to other kinds of heat pipes. However, the PHP operation is non-stationary and depends on many physical and material parameters. As a result, application of empirical correlations is quite unsuccessful. More sophisticated direct modeling is thus required. In this review, we present the past, present, and future perspectives of the theoretical PHP studies. The physical phenomena on the level of a single bubble and single liquid plug is addressed first. In this context, the modeling of the simplest, single branch PHP is described as a necessary first step toward the PHP understanding and model validation. The modeling of interaction between the bubbles and plugs (bubble generation and disappearance, plug evaporation) is discussed next. Finally, the state of the art of the physical modeling and simulation of the multi-turn PHP is reviewed and the difference between existing approaches is explained.

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“…Two oscillation regimes have been predicted [122]. In the first regime, as observed experimentally [54,75,125,134], the meniscus oscillations are quasi-sinusoidal (Fig. 5a).…”

Section: Experimental Validation Of the Single Branch Php Modelssupporting

confidence: 55%

Section: Interaction Between Bubble or Plug Pairsmentioning

confidence: 99%

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Physical principles and state-of-the-art of modeling of the pulsating heat pipe: A review

Nikolayev

2021

Applied Thermal Engineering

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“…The temperature in the two-phase reservoir (liquid+vapor) was controlled due to the high-precision (±0.2K) thermostatic bath that regulated the fluid temperature and thus its saturation pressure. This experiment was repeated by Recklin et al (2015).…”

Section: Transparent Single Branch Phpmentioning

confidence: 99%

“…This is a nonphysical result. Indeed, when an experimentalist wants to start-up a single-branch PHP, the meniscus is brought precisely to the evaporator or adiabatic sections [Recklin et al (2015); Fourgeaud et al (2017)].…”

Section: Superheated Vapor Modelmentioning

confidence: 99%