Capillary boosting for enhanced heat pipe performance through bifurcation of grooves: Numerical assessment and experimental validation

buir.contributor.orcidCetin, Barbaros|0000-0001-9824-4000en_US
dc.citation.epage106162-9en_US
dc.citation.spage106162-1en_US
dc.citation.volumeNumber137en_US
dc.contributor.authorSaygan, S.
dc.contributor.authorAkkus, Y.
dc.contributor.authorDursunkaya, Z.
dc.contributor.authorCetin, Barbaros
dc.contributor.bilkentauthorCetin, Barbaros
dc.date.accessioned2023-02-24T11:32:49Z
dc.date.available2023-02-24T11:32:49Z
dc.date.issued2022-10
dc.departmentDepartment of Mechanical Engineeringen_US
dc.description.abstractIn this study, an enhanced heat pipe performance for grooved heat pipes has been demonstrated through capillary boosting with the introduction of the bifurcation of grooves. Wider grooves regularly branch to narrower grooves such that the total cross-sectional liquid flow area remains approximately the same. Following the computational framework drawn by a recently developed heat pipe analysis toolbox (H-PAT), we develop a numerical model for the heat pipes with tree-like groove architecture. Then we utilize the model to design a flat-grooved heat pipe with one step groove bifurcation at the evaporator. To verify our numerical findings, two heat pipes with and without groove bifurcation are manufactured and experimented under the same conditions. Experimental results show that the numerical model can predict the thermal performance quite accurately. The results reveal that groove bifurcation can be a viable option for a better thermal performance than that of heat pipes with standard grooved heat pipes with straight grooves which leads to at least 25% higher maximum heat transport capacity. The effect of number of branching on the temperature flattening across the heat pipe is also demonstrated for different evaporator lengths.en_US
dc.identifier.doi10.1016/j.icheatmasstransfer.2022.106162en_US
dc.identifier.eissn1879-0178
dc.identifier.issn0735-1933
dc.identifier.urihttp://hdl.handle.net/11693/111683
dc.language.isoEnglishen_US
dc.relation.isversionofhttps://doi.org/10.1016/j.icheatmasstransfer.2022.106162en_US
dc.source.titleInternational Communications in Heat and Mass Transferen_US
dc.subjectCapillary boostingen_US
dc.subjectGroove bifurcationen_US
dc.subjectGrooved heat pipeen_US
dc.subjectH-PATen_US
dc.subjectHierarchical wicken_US
dc.subjectTree-like fractal architectureen_US
dc.titleCapillary boosting for enhanced heat pipe performance through bifurcation of grooves: Numerical assessment and experimental validationen_US
dc.typeArticleen_US
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