Laboratory Investigation of Trash Rack Freezeup by Frazil Ice
A series of tests was conducted in a refrigerated flume facility to determine the ice accumulation pattern on models of water intake trash racks. Data gathered included the flow velocity, the water temperature and the porosity of the accumulated frazil ice (mean porosity is 0.67). Frazil accumulates...
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ftdtic:ADA258120 2023-05-15T16:36:58+02:00 Laboratory Investigation of Trash Rack Freezeup by Frazil Ice Andersson, Annika Daly, Steven F. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1992-09 text/html http://www.dtic.mil/docs/citations/ADA258120 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA258120 en eng http://www.dtic.mil/docs/citations/ADA258120 Approved for public release; distribution is unlimited. DTIC AND NTIS Snow Ice and Permafrost *ICE FORMATION VELOCITY TEMPERATURE MODELS POROSITY ICE FLOW BLOCKING ACCUMULATION WATER FILTERS BRIDGES MEAN RODS PATTERNS SURFACES WATER FACILITIES SHAPE *FRAZIL ICE *TRASH RACKS Text 1992 ftdtic 2016-02-22T10:15:04Z A series of tests was conducted in a refrigerated flume facility to determine the ice accumulation pattern on models of water intake trash racks. Data gathered included the flow velocity, the water temperature and the porosity of the accumulated frazil ice (mean porosity is 0.67). Frazil accumulates first on the upstream face of the trash rack bars (being insensitive to bar shape), and then bridges between individual bars near the water surface, proceeding downward until the entire trash rack is blocked. Flow through the rack became highly nonuniform during the accumulation process. Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost *ICE FORMATION VELOCITY TEMPERATURE MODELS POROSITY ICE FLOW BLOCKING ACCUMULATION WATER FILTERS BRIDGES MEAN RODS PATTERNS SURFACES WATER FACILITIES SHAPE *FRAZIL ICE *TRASH RACKS |
spellingShingle |
Snow Ice and Permafrost *ICE FORMATION VELOCITY TEMPERATURE MODELS POROSITY ICE FLOW BLOCKING ACCUMULATION WATER FILTERS BRIDGES MEAN RODS PATTERNS SURFACES WATER FACILITIES SHAPE *FRAZIL ICE *TRASH RACKS Andersson, Annika Daly, Steven F. Laboratory Investigation of Trash Rack Freezeup by Frazil Ice |
topic_facet |
Snow Ice and Permafrost *ICE FORMATION VELOCITY TEMPERATURE MODELS POROSITY ICE FLOW BLOCKING ACCUMULATION WATER FILTERS BRIDGES MEAN RODS PATTERNS SURFACES WATER FACILITIES SHAPE *FRAZIL ICE *TRASH RACKS |
description |
A series of tests was conducted in a refrigerated flume facility to determine the ice accumulation pattern on models of water intake trash racks. Data gathered included the flow velocity, the water temperature and the porosity of the accumulated frazil ice (mean porosity is 0.67). Frazil accumulates first on the upstream face of the trash rack bars (being insensitive to bar shape), and then bridges between individual bars near the water surface, proceeding downward until the entire trash rack is blocked. Flow through the rack became highly nonuniform during the accumulation process. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Andersson, Annika Daly, Steven F. |
author_facet |
Andersson, Annika Daly, Steven F. |
author_sort |
Andersson, Annika |
title |
Laboratory Investigation of Trash Rack Freezeup by Frazil Ice |
title_short |
Laboratory Investigation of Trash Rack Freezeup by Frazil Ice |
title_full |
Laboratory Investigation of Trash Rack Freezeup by Frazil Ice |
title_fullStr |
Laboratory Investigation of Trash Rack Freezeup by Frazil Ice |
title_full_unstemmed |
Laboratory Investigation of Trash Rack Freezeup by Frazil Ice |
title_sort |
laboratory investigation of trash rack freezeup by frazil ice |
publishDate |
1992 |
url |
http://www.dtic.mil/docs/citations/ADA258120 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA258120 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA258120 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766027285829255168 |