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Qualitative and quantitative schlieren optical measurement of the human thermal plume

  • A new large‐field, high‐sensitivity, single‐mirror coincident schlieren optical instrument has been installed at the Bauhaus‐Universität Weimar for the purpose of indoor air research. Its performance is assessed by the non‐intrusive measurement of the thermal plume of a heated manikin. The schlieren system produces excellent qualitative images of the manikin's thermal plume and also quantitativeA new large‐field, high‐sensitivity, single‐mirror coincident schlieren optical instrument has been installed at the Bauhaus‐Universität Weimar for the purpose of indoor air research. Its performance is assessed by the non‐intrusive measurement of the thermal plume of a heated manikin. The schlieren system produces excellent qualitative images of the manikin's thermal plume and also quantitative data, especially schlieren velocimetry of the plume's velocity field that is derived from the digital cross‐correlation analysis of a large time sequence of schlieren images. The quantitative results are compared with thermistor and hot‐wire anemometer data obtained at discrete points in the plume. Good agreement is obtained, once the differences between path‐averaged schlieren data and planar anemometry data are reconciled.show moreshow less

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Document Type:Article
Author:M.Sc. Amayu Wakoya GenaORCiD, Prof. Conrad VölkerORCiDGND, Prof. Gary SettlesGND
DOI (Cite-Link):https://doi.org/10.1111/ina.12674Cite-Link
URN (Cite-Link):https://nbn-resolving.org/urn:nbn:de:gbv:wim2-20200709-41936Cite-Link
URL:https://onlinelibrary.wiley.com/doi/full/10.1111/ina.12674
Parent Title (English):Indoor Air
Publisher:John Wiley & Sons
Language:English
Date of Publication (online):2020/07/06
Date of first Publication:2020/04/17
Release Date:2020/07/09
Publishing Institution:Bauhaus-Universität Weimar
Institutes and partner institutions:Fakultät Bauingenieurwesen / Professur Bauphysik
Volume:2020
Issue:volume 30, issue 4
Pagenumber:10
First Page:757
Last Page:766
Tag:Schlierenspiegel
Digital image correlation; human thermal plume; schlieren imaging; schlieren velocimetry; thermal comfort
GND Keyword:Raumklima; Behaglichkeit
Dewey Decimal Classification:500 Naturwissenschaften und Mathematik / 530 Physik / 532 Mechanik der Fluide; Mechanik der Flüssigkeiten
BKL-Classification:56 Bauwesen / 56.55 Bauphysik, Bautenschutz
Licence (German):License Logo Creative Commons 4.0 - Namensnennung-Nicht kommerziell (CC BY-NC 4.0)