Gutenberg Open Science: A wind tunnel investigation into the aerodynamics of lobed hailstones

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-5264

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DC Field	Value	Language
dc.contributor.author	Theis, Alexander	-
dc.contributor.author	Borrmann, Stephan	-
dc.contributor.author	Mitra, Subir Kumar	-
dc.contributor.author	Heymsfield, Andrew J.	-
dc.contributor.author	Szakáll, Miklós	-
dc.date.accessioned	2020-10-27T09:36:41Z	-
dc.date.available	2020-10-27T09:36:41Z	-
dc.date.issued	2020	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/5268	-
dc.description.abstract	The complex surface geometries of hailstones affect their fall behavior, fall speeds, and growth. Systematic experimental investigations on the influence of the number and length of lobes on the fall velocity and the drag coefficient of hailstones were performed in the Mainz vertical wind tunnel to provide relationships for use in numerical models. For this purpose, 3D prints of four artificial lobed hailstone models as well as spheres were used. The derived drag coefficients show no dependency in the Reynolds number in the range between 25,000 and 85,000. Further, the drag coefficients were found to increase with increasing length of lobes. All lobed hailstones show higher or similar drag coefficients than spheres. The terminal velocities of the the hailstones with short lobes are very close to each other and only reduced by about 6% from those of a sphere. The terminal velocities from the long lobed hailstones deviate up to 21% from a sphere. The results indicate that lobes on the surface of hailstones reduce their kinetic energy by a factor of up to 3 compared to a sphere. This has important consequences for the estimation of the destructive potential of hailstones.	en_GB
dc.description.sponsorship	DFG, Open Access-Publizieren Universität Mainz / Universitätsmedizin Mainz	de
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	530 Physik	de_DE
dc.subject.ddc	530 Physics	en_GB
dc.title	A wind tunnel investigation into the aerodynamics of lobed hailstones	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-5264	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 08 Physik, Mathematik u. Informatik	de
jgu.organisation.number	7940	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Atmosphere	de
jgu.journal.volume	11	de
jgu.journal.issue	5	de
jgu.pages.alternative	Art. 494	de
jgu.publisher.year	2020	-
jgu.publisher.name	MDPI AG	de
jgu.publisher.place	Basel, Switzerland	de
jgu.publisher.uri	https://doi.org/10.3390/atmos11050494	de
jgu.publisher.issn	2073-4433	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	530	de
jgu.publisher.doi	10.3390/atmos11050494
jgu.organisation.ror	https://ror.org/023b0x485
Appears in collections:	JGU-Publikationen

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