A study on the rewetting temperature

Carbajo, J.J.

doi:10.1016/0029-5493(85)90310-3

Cited by 108 publications

(24 citation statements)

References 33 publications

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“…He found good agreement with his experimental results for low flow rates (G < 150 kg/m 2 s). Carbajo (1985) observed a lower impact than expected by Eq. 2 and proposed a modification of the mass flow rate term: for 2 kg/m 2 s < G < 400 kg/m 2 s, it could be written 1 + 0.1G 0.4 .…”

Section: Rewetting Temperaturecontrasting

confidence: 73%

Effect of Gravity on Film Boiling Heat Transfer and Rewetting Temperature during Quenching

Verthier

Celata

Zummo

et al. 2009

Microgravity Sci. Technol.

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This paper describes the experimental strategy developed to improve the modeling of liquidvapor flows during the chill down of rocket engines by cryogenic fluid in microgravity. A similarity analysis is performed to determine the relevant dimensionless numbers for the design of an experiment similar to engine flows. A literature review on reduced gravity quenching experiments, and on rewetting temperature and film boiling heat transfer shows the lack of validated models for microgravity. Experimental results obtained with the quenching of a glass tube by FC72 during parabolic flight are presented. Especially the impact of gravity and subcooling on rewetting temperature and film boiling heat transfer is investigated. Results show an increase in rewetting temperature, and a decrease in film boiling heat transfer under reduced gravity in agreement with the literature. The compar-B. Verthier (B) · C. Colin ison of 0 g flow pattern with corresponding tests on ground points out a behavior at 0 g closest to 1 g upflow than 1 g downflow.

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Section: Rewetting Temperaturecontrasting

confidence: 73%

Effect of Gravity on Film Boiling Heat Transfer and Rewetting Temperature during Quenching

Verthier

Celata

Zummo

et al. 2009

Microgravity Sci. Technol.

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“…The limits of the unsteady-state quenching method was discussed by Peyayopanakul and Westwater (1978). Carbajo (1985) conducted a detailed study on the rewetting temperature and critically reviewed the existing models. Surface effects in boiling heat transfer have been studied by Roy Chowdhury and Winterton (1985), and Shoji et al (1990).…”

Section: Introductionmentioning

confidence: 99%

Estimation of heat flux in array of jets quenching using experimental and inverse finite element method

Nallathambi

Specht

2009

Journal of Materials Processing Technology

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“…Figure 11 is included for comparison of the differences in the boiling heat flux behaviour of a spray and that experienced during a bath quench for water with 80 K subcooling. The boiling curve of the bath quench in the figure was constructed by evaluating the salient values using standard solutions found in the literature [26][27][28][29][30].…”

Section: Discussionmentioning

confidence: 99%

Analysis of the spray field development on a vertical surface during water spray-quenching using a flat spray nozzle

Vorster

Schwindt

Schupp

et al. 2009

Applied Thermal Engineering

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.Analysis of the spray field development on a vertical surface during water spray-quenching using a flat spray nozzle Abstract -The aims of this study were (i) to conduct experimental spatially and time-resolved measurements of flow development on large heated surfaces during transient spray cooling operations, and (ii) to investigate and discuss the influence of spray cooling mechanisms such as bubble formation and the flow field development of the cooling fluid and how this affects heat transfer. Quartz plates were heated to above 500°Cand then sprayed with pressurised water subcooled to 80K. High speed images of the quench process were collected at a rate of 3000 Hz making it possible to track the movement of the quench front as the plate cools below the Leidenfrost temperature of the fluid at that location. Observations showed that the relative importance of droplet-surface interactions decreases once the Leidenfrost temperature is reached on the plate:It was found that once the water contacts the surface, a water pool develops rapidly which grows larger as the pool floods the heated surface. Comparisons between the spatial flow development and heat transfer on the plate are made in order to describe these interactions more accurately. This information not only provides crucial input into process simulations, but is also useful to develop theoretical models of fluid-solid interaction describing the wetting of a heated component due to water spraying.

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A study on the rewetting temperature

Cited by 108 publications

References 33 publications

Effect of Gravity on Film Boiling Heat Transfer and Rewetting Temperature during Quenching

Effect of Gravity on Film Boiling Heat Transfer and Rewetting Temperature during Quenching

Estimation of heat flux in array of jets quenching using experimental and inverse finite element method

Analysis of the spray field development on a vertical surface during water spray-quenching using a flat spray nozzle

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