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Title:
Thermal effects of substrate on Marangoni flow in droplet evaporation: Response surface and sensitivity analysis
Author: Chen X(陈雪); Wang, Xun; Chen, Paul G.; Liu QS(刘秋生)
Source: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Issued Date: 2017-10-01
Volume: 113, Pages:354-365
Abstract: In this paper, the evaporation of sessile droplets resting on a substrate with different thermal properties is numerically investigated. Computations are based on a transient axisymmetric numerical model. Special attention is paid to evaluate thermal effects of substrate on the structure of bulk fluid flow in the course of evaporation. Numerical results reveal that Marangoni convection induced by non-uniform distribution of temperature along the interface exhibits three distinctly different behaviours: inward flow, multicellular flow and outward flow, consequently resulting in different particle depositions. It is highlighted that three factors (i.e. relative thermal conductivity, relative substrate thickness and relative substrate temperature) strongly affect the flow pattern. In order to further investigate the coupling effects of different influential factors, a Kriging-based response surface method is introduced. We model the flow behaviour as a function of continuous influential factors using a limited number of computations corresponding to discrete values of the inputs. The sensitivities of the Marangoni flow are also analysed using Sobol' index to study the coupling mechanisms of influential factors. The proposed method can be used to forecast the flow patterns for any input parameter without additional sophisticated computer simulation, and allows to confidently estimate an unknown environmental parameter. (C) 2017 Elsevier Ltd. All rights reserved.
Keyword: Droplet evaporation ; Marangoni flow ; Thermal property ; Response surface ; Sensitivity analysis
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Liu, QS (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China.
Correspondent Email: liu@imech.ac.cn
DOI: 10.1016/j.ijheatmasstransfer.2017.05.076
Related URLs: 查看原文
DOC Type: Article
WOS Subject: Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS Subject Extended: Thermodynamics ; Engineering ; Mechanics
WOS Keyword Plus: SESSILE DROPLET
WOS ID: WOS:000406731300036
ISSN: 0017-9310
Funder: National Natural Science Foundation of China(11532015 ; Strategic Priority Research Program on Space Science, Chinese Academy of Sciences(XDA04073000 ; CNES (Centre National d'Etudes Spatiales) ; CAS ; CNRS/CNES ; 11302236) ; XDA04020202-02)
Department: NML流动稳定性与复杂流动
Classification: 一类
Ranking: 1
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/70034
Appears in Collections:国家微重力实验室_期刊论文

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Recommended Citation:
Chen X,Wang, Xun,Chen, Paul G.,et al. Thermal effects of substrate on Marangoni flow in droplet evaporation: Response surface and sensitivity analysis[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2017-10-01,113:354-365.
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