A Review of two-phase flow dynamic instabilities in tube boiling systems

Kakaç, S.; Bon, Bradley L.

doi:10.1016/j.ijheatmasstransfer.2007.09.026

Cited by 369 publications

(134 citation statements)

References 74 publications

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“…by Yadigaroglu & Bergles (1972) and recently confirmed by the noteworthy review of Kakaç & Bon (2008), ascribes the origin of the instability to waves of heavier and lighter fluids, and respective delays through the channel. The difference in density between the fluid entering the heated channel (subcooled liquid) and the fluid exiting (low density two-phase mixture) triggers delays in the transient distribution of pressure drops along the tube, which may induce self-sustained oscillations.…”

Section: Density Wave Oscillations (Dwos)mentioning

confidence: 75%

“…Lots of lumped-parameter and distributed-parameter stability models, both linear and nonlinear, have been published since the '60-'70s. Most important literature reviews on the subject -among which are worthy of mention the works of Bouré et al (1973), Yadigaroglu (1981) and Kakaç & Bon (2008) -collect the large amount of theoretical researches. It is just noticed that the study on density wave instabilities in parallel twin or multi-channel systems represents still nowadays a topical research area.…”

Section: Theoretical Researches On Density Wave Oscillationsmentioning

confidence: 99%

“…The majority of the experimental works on the subject -collected in several literature reviews (Kakaç & Bon, 2008;Yadigaroglu, 1981) -deals with straight tubes and few meters long test sections. Moreover, all the aspects associated with DWO instability have been systematically analysed in a limited number of works.…”

Section: Experimental Investigations On Density Wave Oscillationsmentioning

confidence: 99%

“…Moreover, large amplitude fluctuations in channel wall temperatures, so named thermal oscillations (Kakaç & Bon, 2008), always occur ( Fig. 15-(d)), associated with fully developed density wave oscillations that trigger intermittent film boiling conditions.…”

Section: V4mentioning

confidence: 99%

See 3 more Smart Citations

On Density Wave Instability Phenomena – Modelling and Experimental Investigation

Papini¹,

Cammi²,

Colombo³

et al. 2011

Two Phase Flow, Phase Change and Numerical Modeling

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The heat transfer and analysis on laser beam, evaporator coils, shell-and-tube condenser, two phase flow, nanofluids, complex fluids, and on phase change are significant issues in a design of wide range of industrial processes and devices. This book includes 25 advanced and revised contributions, and it covers mainly (1) numerical modeling of heat transfer, (2) two phase flow, (3) nanofluids, and (4) phase change. The first section introduces numerical modeling of heat transfer on particles in binary gas-solid fluidization bed, solidification phenomena, thermal approaches to laser damage, and temperature and velocity distribution. The second section covers density wave instability phenomena, gas and spray-water quenching, spray cooling, wettability effect, liquid film thickness, and thermosyphon loop. The third section includes nanofluids for heat transfer, nanofluids in minichannels, potential and engineering strategies on nanofluids, and heat transfer at nanoscale. The forth section presents time-dependent melting and deformation processes of phase change material (PCM), thermal energy storage tanks using PCM, phase change in deep CO2 injector, and thermal storage device of solar hot water system. The advanced idea and information described here will be fruitful for the readers to find a sustainable solution in an industrialized society.

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Section: Density Wave Oscillations (Dwos)mentioning

confidence: 75%

Section: Theoretical Researches On Density Wave Oscillationsmentioning

confidence: 99%

Section: Experimental Investigations On Density Wave Oscillationsmentioning

confidence: 99%

Section: V4mentioning

confidence: 99%

See 2 more Smart Citations

On Density Wave Instability Phenomena – Modelling and Experimental Investigation

Papini¹,

Cammi²,

Colombo³

et al. 2011

Two Phase Flow, Phase Change and Numerical Modeling

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“…There are two ways to reduce the flow instabilities: reduce the local liquid superheat at the ONB and introduce a pressure drop element at the entrance of each channel, Kandlikar [27]. Kakac and Bon [28] reported that density-wave oscillations were observed also in conventional size channels. Introduction of additional pressure drop at the inlet (small diameter orifices were employed for this purpose) stabilized the system.…”

Section: Bubble Velocitymentioning

confidence: 99%

Boiling in micro-channels

Hetsroni¹

2010

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. Boiling heat transfer in micro-channels is a subject of intense academic and practical interest. Though many heat transfer correlations have been proposed, most were empirically formulated from experimental data. However, hydrodynamic and thermal aspects of boiling in micro-channels are not well understood. Moreover, there are only a few theoretical models that link the heat transfer mechanism with flow regimes in micro-channels. Also, there are discrepancies between different sets of published results, and heat transfer coefficients have either well exceeded, or fallen far below, those predicted for conventional channels. Here we consider these problems with regard to micro-channels with hydraulic diameters ranging roughly from 5 µm to 500 µm, to gain a better understanding of the distinct properties of the measurement techniques and uncertainties, the conditions under which the experimental results should be compared to analytical or numerical predictions, boiling phenomenon, as well as different types of micro-channel heat sinks. Two-phase flow maps and heat transfer prediction methods for vaporization in macro-channels are not applicable in micro-channels, because surface tension dominates the phenomena, rather than gravity forces. The models of convection boiling should correlate the frequencies, sizes and velocities of the bubbles and the coalescence processes, which control the flow pattern transitions, together with the heat flux and the mass flux. Therefore, the vapour bubble size distribution must be taken into account. The flow pattern in parallel micro-channels is quite different from that in a single micro-channel. At same values of heat and mass flux, different, time dependent, flow regimes occur in a given micro-channel. At low vapour quality, heat flux causes a sudden release of energy into the vapour bubble, which grows rapidly and occupies the entire channel cross section. The rapid bubble growth pushes the liquid-vapour interface on both caps of the vapour bubble, at the upstream and the downstream ends, and leads to a reverse flow. We term this phenomenon as explosive boiling. One of the limiting operating conditions with flow boiling is the critical heat flux (CHF). The CHF phenomenon is different from that observed in conventional size channels.

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Observation of the Dynamics of Hydrothermal Activity in La Soufrière of Guadeloupe Volcano with Joint Muography, Gravimetry, Electrical Resistivity Tomography, Seismic and Temperature Monitoring

Gibert

d'Ars

Carlus

et al. 2022

Geophysical Monograph Series

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Muography uses muons contained in the natural cosmic rays to determine the density of rock volumes. The measurements consist in counting the muons emerging from the target to determine the screening effect produced by the rock. Because the larger the rock thickness, the smaller the number of muons able to cross, the time resolution that can be achieved by muography to monitor density changes is on the order of one or two weeks for kilometer-sized volcanoes. This limitation of the method can be reduced by joining muography with high time-resolution measurements like passive seismic monitoring. In the case of structural imaging, muography benefits from the fact that muon trajectories are linear, making the tomography problem simpler than for other geophysical techniques like electrical resistivity tomography. Experiments performed on La Soufrière of Guadeloupe volcano are described to show how muography can be used to contribute to structural imaging of an highly heterogeneous lava dome and to detect abrupt transient hydrothermal phenomena likely to produce dangerous explosive events.

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A Review of two-phase flow dynamic instabilities in tube boiling systems

Cited by 369 publications

References 74 publications

On Density Wave Instability Phenomena – Modelling and Experimental Investigation

On Density Wave Instability Phenomena – Modelling and Experimental Investigation

Boiling in micro-channels

Observation of the Dynamics of Hydrothermal Activity in La Soufrière of Guadeloupe Volcano with Joint Muography, Gravimetry, Electrical Resistivity Tomography, Seismic and Temperature Monitoring

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