Numerical study of the convective heat transfer coefficient of the hand and the effect of wind

dc.contributor.author Song, Guowen
dc.contributor.author Li, Rui
dc.contributor.author Zhang, Mengying
dc.contributor.author Li, Rui
dc.contributor.author Wu, Yulin
dc.contributor.author Wang, Liwen
dc.contributor.author Song, Guowen
dc.contributor.author Li, Jun
dc.contributor.department Apparel, Events and Hospitality Management
dc.date 2020-12-03T17:04:49.000
dc.date.accessioned 2021-02-24T18:34:47Z
dc.date.available 2021-02-24T18:34:47Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 2020
dc.date.embargo 2022-11-25
dc.date.issued 2020-11-25
dc.description.abstract <p>This study aimed to investigate the effect of wind speed and direction on the convective heat transfer coefficient of the human hand, considering the specific geometry of human hands. Computational fluid dynamics (CFD) simulation of the heat transfer and airflow between the hand and surrounding environment was performed. The numerical hand form was created from a surface scan of a thermal hand manikin and divided into 18 sections, including the palm, dorsal, wrist, and five fingers, with each section divided into three parts: fingertip, middle digit, and finger root. The numerical simulation results were compared with the experiment data and showed good conformity. The numerical results showed that the local convective heat transfer coefficient of each of the 18 hand sections varied significantly due to the specific local geometry of the hand. The convective heat transfer coefficients of the five fingers are larger than those of the palm, dorsal, and wrist, and the fingertip is the most vulnerable section to heat loss. The convective heat transfer coefficient of the whole hand increased from 4.30 to 26.49 W/(m2·K) when wind speeds increased from 0.05 to 2.0 m/s. Wind directions had little effect on the convective heat transfer coefficient of the whole hand but had a significant impact on different individual hand sections. The CFD model, along with the developed regression equations of convective heat transfer coefficient with wind speed, can be a foundation for further study on the interaction of human hands with various thermal environments to improve thermal comfort and work efficiency.</p>
dc.description.comments <p>This accepted article is published as Zhang, M., Li, R., Wu, Y., Wang, L., Song, G., Li, J., Numerical study of the convective heat transfer coefficient of the hand and the effect of wind. <em>Building and Environment</em>, 25 November 2020, 107482. doi: <a href="https://doi.org/10.1016/j.buildenv.2020.107482" target="_blank" title="Persistent link using digital object identifier">10.1016/j.buildenv.2020.107482</a></p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aeshm_pubs/141/
dc.identifier.articleid 1141
dc.identifier.contextkey 20389484
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aeshm_pubs/141
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/93044
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aeshm_pubs/141/2020_GS_ALert_Pub_SongG__Numerical_study_of_the_convective.pdf|||Fri Jan 14 20:14:30 UTC 2022
dc.source.uri 10.1016/j.buildenv.2020.107482
dc.subject.disciplines Fashion Design
dc.subject.disciplines Fiber, Textile, and Weaving Arts
dc.subject.disciplines Other Environmental Sciences
dc.subject.disciplines Other Medicine and Health Sciences
dc.subject.disciplines Polymer and Organic Materials
dc.subject.keywords Hand manikin
dc.subject.keywords Wind tunnel
dc.subject.keywords Convective heat transfer coefficient
dc.subject.keywords Computational fluid dynamics (CFD)
dc.subject.keywords Thermal comfort
dc.title Numerical study of the convective heat transfer coefficient of the hand and the effect of wind
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 5960a20b-38e3-465c-a204-b47fdce6f6f2
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