Experimental investigation on transient pool boiling heat transfer from rough surface and heat transfer correlations

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dc.contributor.authorWalunj, A.
dc.contributor.authorSathyabhama, A.
dc.date.accessioned2026-02-05T09:30:38Z
dc.date.issued2019
dc.description.abstractThis paper presents the study of transient boiling characteristics on rough copper sample with surface roughness value (Ra) ranging from 0.106 ?m to 4.03 ?m. The effect of roughness and time constant of exponential heat supply on transient critical heat flux (CHF), maximum heat transfer coefficient (HTC) and onset of nucleate boiling (ONB) is extensively studied. The mechanism of heat transfer in unidirectional scratches of rough sample is discussed. High speed visualization is carried to observe the stages of boiling and bubble dynamics. The HTC correlation developed in this study predicts the present experimental values of HTC with a mean absolute error (MAE) of 9.62 %. © 2019 International Information and Engineering Technology Association. All rights reserved.
dc.identifier.citationInternational Journal of Heat and Technology, 2019, 37, 2, pp. 545-554
dc.identifier.issn3928764
dc.identifier.urihttps://doi.org/10.18280/ijht.370223
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/24806
dc.publisherInternational Information and Engineering Technology Association info@iieta.org
dc.subjectHeat flux
dc.subjectSurface roughness
dc.subjectVisualization
dc.subjectCritical heat flux(CHF)
dc.subjectExperimental investigations
dc.subjectExperimental values
dc.subjectHeat transfer correlation
dc.subjectHigh-speed visualization
dc.subjectMaximum heat transfer
dc.subjectOnset of nucleate boiling
dc.subjectPool boiling heat transfer
dc.subjectHeat transfer
dc.titleExperimental investigation on transient pool boiling heat transfer from rough surface and heat transfer correlations

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