Author
Yanlong Cao
Bio: Yanlong Cao is an academic researcher from Zhejiang University. The author has contributed to research in topics: Microchannel & Heat transfer. The author has an hindex of 2, co-authored 6 publications receiving 10 citations.
Papers
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TL;DR: In this paper, the authors investigate the flow distribution in the manifold microchannel (MMC) heat sink, which possesses better heat transfer performance and less pressure drop than the traditional microchannel heat sink.
41 citations
TL;DR: In this paper, a single bubble growth in one of the two nearby microchannels is investigated through numerical methods, and the method of combination of microchannel and microgap (CMC) has little effect on flow reversal until the bubble enters the microgap.
14 citations
TL;DR: In this paper, the conjugate heat transfer of bubble growth during flow boiling in microchannel has a significant effect on the flow field and heat transfer performance but few studies analyzed it before.
7 citations
TL;DR: In this article, the effect of micro-structured porous surface on enhancing the heat transfer of flow boiling in a microchannel was explored, where the micro-porous copper surface was fabricated with microscale pores in ranges of 1-5 µm, which presented super-hydrophobicity.
Abstract:
To explore the effect of micro-structured porous surface on enhancing the heat transfer of flow boiling in a microchannel, the micro-porous copper surface was fabricated with microscale pores in ranges of 1-5 µm, which presented super-hydrophobicity. Subcooled flow boiling experiments were carried out to study the hydraulic and thermal transport performance in a single narrow rectangular microchannel. High-speed flow visualizations were conducted coupled with instrumental measurements to illustrate the effects of heat flux and mass flux on heat transfer performance and flow patterns for originally hydrophilic bare copper surface and superhydrophobic micro-porous structured surface. The onset of boiling (ONB) characteristics of both test surfaces were compared with predictive correlations with a good agreement and verified by the captured flow pattern images. Benefit from the superhydrophobic wettability provided by its micro-scale porous structures and a large number of potential nucleation sites, the required wall superheats, and imposed heat fluxes of onset of boiling both decreased for the modified surface. The flow patterns on the two surfaces varied, which resulted in the different trends of heat transfer coefficient with mass fluxes and heat fluxes. Because of the strengthened bubble departure process, the enhancement of the porous surface compared to the original bare surface gradually increased with mass fluxes. The average two-phase heat transfer coefficients of the superhydrophobic porous copper surface were enhanced for up to 74.84%, due to the earlier onset of boiling, higher frequency of bubble nucleation, and strengthened boiling intensity.
7 citations
TL;DR: The diverging microchannel has a gradually expanding cross-section area along the flow direction that can reduce flow instability and hence partial dry out as discussed by the authors, and the VOF method, Hardt and Wond...
Abstract: The diverging microchannel has a gradually expanding cross-section area along the flow direction that can reduce flow instability and hence partial dry out. Utilizing the VOF method, Hardt and Wond...
4 citations
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TL;DR: In this paper , a regulatable three-phase interface on a porous fixed-bed is constructed for efficient C-C coupling in photocatalytic CO2 reduction, and the results show that ∼90% selectivity towards C2+ products is obtained by a Cu/Cd0.5Zn 0.5S photocatalyst, with a yield of 6.54μmol/h (an irradiation area of 0.785 cm2), while only 0.94
33 citations
TL;DR: In this article, the numerical investigation of flow boiling on micro-fin, micro-cavity, and smooth surfaces in a microchannel was conducted, with water serving as the working fluid.
26 citations
TL;DR: In this article, the influence of surfactant Triton X-100 on boron nitride nanotubes (BNNTs) nanofluid in non-optimized and optimized microchannel heat sink (MCHS) at 30°C and 50°C was evaluated.
23 citations
TL;DR: In this article , the authors provide beneficial information regarding the different designs and methods for heat enhancement and overall thermal performance in straight and wavy microchannel heat sinks with nanofluids, modified designs improve heat transfer performance due to incorporating secondary flow.
Abstract: As demand for high-performance heat transfer increases, interest in microchannel heat sinks as a viable solution for heat flux removal in thermal devices has grown significantly. Microchannel heat sinks with straight and wavy designs are the two main varieties that have been the focus of extensive research in this field. The current paper provides beneficial information regarding the different designs and methods for heat enhancement and overall thermal performance in straight and wavy microchannel heat sinks. Besides using nanofluids, modified designs improve heat transfer performance due to incorporating secondary flow. Moreover, utilizing microchannels as indirect cooling methods in lithium-ion battery thermal management is discussed in this review. This study discusses current issues and future research directions.
22 citations
TL;DR: In this paper, a single bubble growth in one of the two nearby microchannels is investigated through numerical methods, and the method of combination of microchannel and microgap (CMC) has little effect on flow reversal until the bubble enters the microgap.
14 citations