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Determination of Diffusion Coefficient in Droplet Evaporation Experiment Using Response Surface Method
Chen X(陈雪); Wang X; Chen PG; Liu QS(刘秋生)
AbstractEvaporation of a liquid droplet resting on a heated substrate is a complex free-surface advection-diffusion problem, in which the main driving force of the evaporation is the vapor concentration gradient across the droplet surface. Given the uncertainty associated with the diffusion coefficient of the vapor in the atmosphere during space evaporation experiments due to the environmental conditions, a simple and accurate determination of its value is of paramount importance for a better understanding of the evaporation process. Here we present a novel approach combining numerical simulations and experimental results to address this issue. Specifically, we construct a continuous function of output using a Kriging-based response surface method, which allows to use the numerical results as a black-box with a limited number of inputs and outputs. Relevant values of the diffusion coefficient can then be determined by solving an inverse problem which is based on accessible experimental data and the proposed response surface. In addition, on the basis of our numerical simulation results, we revisit a widely used formula for the prediction of the evaporation rate in the literature and propose a refined expression for the droplets evaporating on a heated substrate.
KeywordDroplet evaporation Diffusion coefficient Response surface Marangoni flow Microgravity
Indexed BySCI ; EI
WOS IDWOS:000448521400009
WOS Research AreaEngineering, Aerospace ; Thermodynamics ; Mechanics
WOS SubjectEngineering ; Thermodynamics ; Mechanics
Funding OrganizationNational Natural Science Foundation of China [11532015] ; Strategic Pioneer Program on Space Science, Chinese Academy of Sciences [XDA 04020202-02] ; CNES (Centre National d'Etudes Spatiales) ; Guangxi's Key Laboratory Foundation of Manufacturing Systems and Advanced Manufacturing Technology [17-259-05-002Z] ; China Postdoctoral Science Foundation [2018M633113]
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Guilin Univ Elect Technol, Sch Mech & Elect Engn, Guangxi Key Lab Mfg Syst & Adv Mfg Technol, Guilin, Peoples R China
2.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Clear Water Bay, Hong Kong, Peoples R China
3.Chen, Paul G.] Aix Marseille Univ, CNRS, Cent Marseille, M2P2, Marseille, France
4.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing, Peoples R China
5.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Chen X,Wang X,Chen PG,et al. Determination of Diffusion Coefficient in Droplet Evaporation Experiment Using Response Surface Method[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2018,30(5):675-682.
APA 陈雪,Wang X,Chen PG,&刘秋生.(2018).Determination of Diffusion Coefficient in Droplet Evaporation Experiment Using Response Surface Method.MICROGRAVITY SCIENCE AND TECHNOLOGY,30(5),675-682.
MLA 陈雪,et al."Determination of Diffusion Coefficient in Droplet Evaporation Experiment Using Response Surface Method".MICROGRAVITY SCIENCE AND TECHNOLOGY 30.5(2018):675-682.
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