Numerical Study on the Evaporation of a Non-Spherical Sessile Droplet.

Wenbin Cui, Yang Cao, Shoupei Wang, Tianci Zhang, Hongbin Ma, Chao Chang, Dalong Liang, Jingming Dong

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Article in Micromachines, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Wenbin CuiCollege of Marine Engineering, Dalian Maritime University, Dalian 116016, China.

Yang CaoCollege of Marine Engineering, Dalian Maritime University, Dalian 116016, China.

Shoupei WangCollege of Marine Engineering, Dalian Maritime University, Dalian 116016, China.

Tianci ZhangCollege of Marine Engineering, Dalian Maritime University, Dalian 116016, China.

Hongbin MaDepartment of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA.

Chao ChangCollege of Marine Engineering, Dalian Maritime University, Dalian 116016, China.ORCID 0000-0001-6567-5744

Dalong LiangCollege of Marine Engineering, Dalian Maritime University, Dalian 116016, China.

Jingming DongCollege of Marine Engineering, Dalian Maritime University, Dalian 116016, China.ORCID 0000-0001-8516-698X

Funding

College Students' Innovation and Entrepreneurial Training Plan Program 2021101511285Fundamental Research Funds for the Central Universities 3132021336National Natural Science Foundation of China 51876019Natural Science Foundation of Liaoning Province 201602069

6 · The paper itself

Abstract

To better understand the evaporation of a non-spherical droplet, a two-dimensional simulation was conducted to investigate the evaporation on the asymmetric cross-section of non-spherical sessile droplets, which are characterized by two curvatures with two different contact angles on both sides. The temperature distribution, internal flow, and evaporation flux distribution at a quasi-steady state were revealed to be different from the spherical droplets. When heated from the substrate, the lowest surface temperature moves to the side of higher curvature or larger contact angle, forming a single vortex in the droplet. This single-vortex formation continues to be enhanced by enlarging the contact angle discrepancy. Unlike spherical droplets, the smaller curvature side of a non-spherical sessile droplet will release more evaporation flux. In addition, it is found that the non-spherical sessile droplets could surpass the spherical sessile droplets in evaporation flux.

Indexed as

evaporationnon-spherical sessile dropletnumerical simulation

Identifiers

PMID36677137

DOI10.3390/mi14010076

PMCPMC9861089

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