Theoretical and experimental modelling of an open oscillatory heat pipe including gravity

Dobson, Robert T.

doi:10.1016/j.ijthermalsci.2003.05.003

Cited by 80 publications

(66 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within several details, it is analogous to the single-bubble version of the model presented in [13]. By the reasons mentioned above, this model is also similar to that of Dobson [11,12] (at least it coincides with it in the linear approximation treated below).…”

Section: Superheated Vapor Modelmentioning

confidence: 72%

“…4) is similar to the works presented earlier in [11,12]. The liquid plug confines a vapor bubble is constant and assumed to be equal to the sum of the reservoir pressure p r and the hydrostatic pressure of the liquid column in the reservoir.…”

Section: Model Geometrymentioning

confidence: 91%

“…Zhang et al [10], Dobson [11,12] studied the governing mechanism of the PHP using simple models. They studied a Ushaped miniature tube (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…This effect was completely neglected in the above mentioned modelling approaches. Dobson [11,12] has included a film in his singlebubble model. However the film mass exchange in his model was not related to the liquid-vapor equilibrium and the mass exchange was proportional to the difference of temperatures of the vapor and the wall, just like in the other works that did not treat the films at all.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Thermally induced two-phase oscillating flow inside a capillary tube

Das

Nikolayev

Lefèvre

et al. 2010

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

a b s t r a c tThis paper deals with thermally induced meniscus oscillations in a two-phase system consisting of a liquid plug and a vapor bubble in a capillary tube of circular cross-section. This system represents the simplest version of a heat transfer device called ''pulsating heat pipe" (PHP). Our purpose is to gain fundamental understanding of the physical processes that cause self-sustained thermally driven oscillations. A visualization experiment is performed and the oscillations of the liquid-vapor meniscus and the vapor pressure are observed. We propose next a theoretical model. It differs from existing models by the account of the two-phase equilibrium that occurs locally at the vapor-liquid interface and by introduction of the time varying wetting films through which the major part of the heat and mass transfer occurs.Results from the proposed model show a good agreement with the experiment.

show abstract

Section: Superheated Vapor Modelmentioning

confidence: 72%

Section: Model Geometrymentioning

confidence: 91%

“…Zhang et al [10], Dobson [11,12] studied the governing mechanism of the PHP using simple models. They studied a Ushaped miniature tube (i.e.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermally induced two-phase oscillating flow inside a capillary tube

Das

Nikolayev

Lefèvre

et al. 2010

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

show abstract

“…Wong (Wong et al, 1999) predicted the direction of vapor and liquid slugs by the multiple spring-mass-damper system, but without considering the effect of heat exchange. Dobson (Dobson, 2004) and Faghri et al Zhang et al, 2002) established the mass, momentum and energy conservation equations of OHP by the control volume method. Khandekar (Khandekar et al, 2002) proposed an artificial neutral network to predict the thermal performance of OHP, which based on an amount of experimental data.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on Flow and Heat Transfer in Oscillating Heat Pipes

Wang¹,

Lin²,

Lee³

et al. 2012

Frontiers in Heat Pipes

View full text Add to dashboard Cite

In order to predict the heat transport capability of oscillating heat pipes (OHPs), a mathematical and physical model of OHP was built to simulate the process of flow and heat transfer in vertical bottom heating mode. Water was used as working fluid. Mixture model in FLUENT was used for twophase flow numerical simulation. The result showed that the numerical simulation was successful to reproduce the behavior of the internal flow of OHP, including vapor generation in evaporation section, oscillation phenomena caused by the pressure difference and heat transfer due to oscillation. Comparing with the experimental tests, the simulation results agreed with the experimental records fairly well.

show abstract

Heat Pipes and Thermosyphons

Faghri¹

2018

Handbook of Thermal Science and Engineering

View full text Add to dashboard Cite

Theoretical and experimental modelling of an open oscillatory heat pipe including gravity

Cited by 80 publications

References 5 publications

Thermally induced two-phase oscillating flow inside a capillary tube

Thermally induced two-phase oscillating flow inside a capillary tube

Numerical Simulation on Flow and Heat Transfer in Oscillating Heat Pipes

Heat Pipes and Thermosyphons

Contact Info

Product

Resources

About