Terminal velocities of ice crystals
| dc.contributor.author | Brown, Stanley Richard, author | |
| dc.contributor.author | Grant, Lewis O., author | |
| dc.contributor.author | Department of Atmospheric Science, Colorado State University, publisher | |
| dc.date.accessioned | 2019-10-11T18:09:35Z | |
| dc.date.available | 2019-10-11T18:09:35Z | |
| dc.date.issued | 1970-12 | |
| dc.description | CER70-71SRB-LOG45. | |
| dc.description | December 1970. | |
| dc.description | Includes bibliographical references. | |
| dc.description | Prepared with support from the National Science Foundation. | |
| dc.description.abstract | A theoretical consideration of the terminal velocities of several ice crystal types is presented. The Best number-Reynolds number relationship for objects whose shapes simulate ice crystals is employed in the computations. The computed terminal velocities as a function of crystal size are shown. A parallel field study has been performed. Photographs of crystals falling in natural snowfall were made using a strobe light for illumination. From the photographs, a determination of crystal type, size, and falling attitude and the distance the crystal fell between successive strobe flashes was made. Terminal velocities were then calculated and the data was plotted as a function of crystal type and size. Curves were fitted to the data using the least squares method. These results are shown with the computed values. Also shown are Nakaya's findings for comparison. Experimental results of the study show that all of the crystal types observed exhibit a functional relationship between terminal velocity and crystal size. This is consistent with theoretical predictions developed in the study. Reasons for some disagreement between observational and theoretical results are discussed. | |
| dc.description.sponsorship | Under grant no. GA-11574. | |
| dc.format.medium | technical reports | |
| dc.identifier.uri | https://hdl.handle.net/10217/198242 | |
| dc.language | English | |
| dc.language.iso | eng | |
| dc.publisher | Colorado State University. Libraries | |
| dc.relation | Catalog record number (MMS ID): 991023632799703361 | |
| dc.relation.ispartof | Civil Engineering Reports | |
| dc.relation.ispartof | CER, 70/71-45 | |
| dc.rights | Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. | |
| dc.subject.lcsh | Ice crystals | |
| dc.title | Terminal velocities of ice crystals | |
| dc.type | Text | |
| dcterms.rights.dpla | This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). |
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