Leidenfrost drops on micro/nanostructured surfaces

doi:10.1007/s11708-018-0541-7

Front. Energy

2018, Vol. 12

Issue (1) : 22-42 https://doi.org/10.1007/s11708-018-0541-7

REVIEW ARTICLE

Leidenfrost drops on micro/nanostructured surfaces

Vishal TALARI, Prakhar BEHAR, Yi LU, Evan HARYADI, Dong LIU(

)

Department of Mechanical Engineering, University of Houston, Houston, TX 77204-4006, USA

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Abstract

In the Leidenfrost state, the liquid drop is levitated above a hot solid surface by a vapor layer generated via evaporation from the drop. The vapor layer thermally insulates the drop from the heating surface, causing deteriorated heat transfer in a myriad of important engineering applications. Thus, it is highly desirable to suppress the Leidenfrost effect and elevate the Leidenfrost temperature. This paper presents a comprehensive review of recent literature concerning the Leidenfrost drops on micro/nanostructured surfaces with an emphasis on the enhancement of the Leidenfrost temperature. The basic physical processes of the Leidenfrost effect and the key characteristics of the Leidenfrost drops were first introduced. Then, the major findings of the influence of various micro/nanoscale surface structures on the Leidenfrost temperature were presented in detail, and the underlying enhancement mechanism for each specific surface topology was also discussed. It was concluded that multiscale hierarchical surfaces hold the best promise to significantly boost the Leidenfrost temperature by combining the advantages of both micro- and nanoscale structures.

Keywords Leidenfrost drop Leidenfrost temperature heat transfer enhancement micro/nanostructured surfaces

Corresponding Author(s): Dong LIU

Just Accepted Date: 03 January 2018 Online First Date: 02 February 2018 Issue Date: 08 March 2018

Cite this article:

Vishal TALARI,Prakhar BEHAR,Yi LU, et al. Leidenfrost drops on micro/nanostructured surfaces[J]. Front. Energy, 2018, 12(1): 22-42.

URL:

https://academic.hep.com.cn/fie/EN/10.1007/s11708-018-0541-7
https://academic.hep.com.cn/fie/EN/Y2018/V12/I1/22

Fig.1 Lifetime and heat transfer regimes of the drop at different wall temperatures. (Adapted with permission from Bernardin and Mudawar [8])

Fig.2 Leidenfrost drop on a hot surface

Fig.3 Model of a levitated Leidenfrost drop

Fig.4 Schematic cross section of a Leidenfrost drop with deformed bottom surface (Adapted with permission from Snoeijer et al. [26])

Fig.5 Vapor bubble (s) rising from the center of large puddles of water (Adapted with permission from Biance et al. [25])

Fig.6 Self-sustained, star-shaped oscillations of Leidenfrost drop (Adapted with permission from Ma et al. [31])

Fig.7 Contact boiling vs. film boiling of an impinging drop (Adapted with permission from Tran et al. [33].)

Fig.8 Patterned micropillar arrays for Leidenfrost drops (Adapted with permission from (a) Tran et al. [33], (b) Kwon et al. [57] and (c) Park et al. [60])

Fig.9 The effect of surface roughness height, wettability and nanoporosity on the LFP (Adapted with permission from Kim et al. [56])

Fig.10 Effects of micropillar structures with different edge-to-edge spacing on drop dynamics and the LFP. (Adapted with permission from Kwok et al. [57])

Fig.11 Microstructures generated by a picosecond pulsed laser source

Fig.12 The dependence of dynamic LFP on micropillar height, interfacing and Webber number. (Adapted with permission from Tran et al. [33])

Fig.13 The dependence of Leidenfrost temperature on micropillar geometries. (Adpated with permission from Park et al. [60])

Fig.14 SEM of the microrib patterns and the corresponding heat transfer mechanisms on the microstructured surface (Adapted with permission from Hays et al. [61])

Fig.15 SEM images of the polymer nanofiber mat and the single nanofibers (Adapted with permission from Sinha-Ray et al. [65].)

Fig.16 Study of LFP on CNF nanostructures

Fig.17 Zironium nanotube surface and the impact on LFP (Adapted with permission from Kim et al. [66])

Fig.18 Study of LFP on silicon nanowire-coated surface

Fig.19 Micro-nano hierarchical surface structure with micropillar array coated with nanoparticles (Adapted with permission from Kwon et al. [57])

Fig.20 Study of LFP on micro/nanoscale hierarchical surface

Fig.21 Study of LFP on multiscale textured surface (MTS)

Fig.22 Study of LFP on decoupled hierarchical surface for LFP enhancement

Fig.23 Study of LFP on nanoporous surface

Fig.24 Illustration of a metal mesh (Adapted with permission from Geraldi et al. [76])

Fig.25 Study of LFP on Cu hierarchical surface structure

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