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Combined Thermo-Hydraulic Analysis of a Cryogenic Jet
A cryogenic jet is a phenomenon encountered in different fields like some technological processes and cryosurgery. It may also be a result of cryogenic equipment rupture or a cryogen discharge from the cryostats following resistive transition in superconducting magnets. Heat exchange between a cold...
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Lenguaje: | eng |
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1999
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Acceso en línea: | http://cds.cern.ch/record/410386 |
_version_ | 1780894563999678464 |
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author | Chorowski, M |
author_facet | Chorowski, M |
author_sort | Chorowski, M |
collection | CERN |
description | A cryogenic jet is a phenomenon encountered in different fields like some technological processes and cryosurgery. It may also be a result of cryogenic equipment rupture or a cryogen discharge from the cryostats following resistive transition in superconducting magnets. Heat exchange between a cold jet and a warm steel element (e.g. a buffer tank wall or a transfer line vacuum vessel wall) may result in an excessive localisation of thermal strains and stresses. The objective of the analysis is to get a combined (analytical and experimental) one-dimensional model of a cryogenic jet that will enable estimation of heat transfer intensity between the jet and steel plate with a suitable accuracy for engineering applications. The jet diameter can only be determined experimentally. The mean velocity profile can be calculated from the fact that the total flux of momentum along the jet axis is conserved. The proposed model allows deriving the jet crown area with respect to the distance from the vent and the mean velocity profile along the jet axis. A simple formula to assess convective heat exchange between the jet and a solid obstacle has been proposed and experimentally verified. |
id | cern-410386 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 1999 |
record_format | invenio |
spelling | cern-4103862023-05-31T13:22:09Zhttp://cds.cern.ch/record/410386engChorowski, MCombined Thermo-Hydraulic Analysis of a Cryogenic JetAccelerators and Storage RingsA cryogenic jet is a phenomenon encountered in different fields like some technological processes and cryosurgery. It may also be a result of cryogenic equipment rupture or a cryogen discharge from the cryostats following resistive transition in superconducting magnets. Heat exchange between a cold jet and a warm steel element (e.g. a buffer tank wall or a transfer line vacuum vessel wall) may result in an excessive localisation of thermal strains and stresses. The objective of the analysis is to get a combined (analytical and experimental) one-dimensional model of a cryogenic jet that will enable estimation of heat transfer intensity between the jet and steel plate with a suitable accuracy for engineering applications. The jet diameter can only be determined experimentally. The mean velocity profile can be calculated from the fact that the total flux of momentum along the jet axis is conserved. The proposed model allows deriving the jet crown area with respect to the distance from the vent and the mean velocity profile along the jet axis. A simple formula to assess convective heat exchange between the jet and a solid obstacle has been proposed and experimentally verified.LHC-Project-Report-325CERN-LHC-Project-Report-325oai:cds.cern.ch:4103861999-12-01 |
spellingShingle | Accelerators and Storage Rings Chorowski, M Combined Thermo-Hydraulic Analysis of a Cryogenic Jet |
title | Combined Thermo-Hydraulic Analysis of a Cryogenic Jet |
title_full | Combined Thermo-Hydraulic Analysis of a Cryogenic Jet |
title_fullStr | Combined Thermo-Hydraulic Analysis of a Cryogenic Jet |
title_full_unstemmed | Combined Thermo-Hydraulic Analysis of a Cryogenic Jet |
title_short | Combined Thermo-Hydraulic Analysis of a Cryogenic Jet |
title_sort | combined thermo-hydraulic analysis of a cryogenic jet |
topic | Accelerators and Storage Rings |
url | http://cds.cern.ch/record/410386 |
work_keys_str_mv | AT chorowskim combinedthermohydraulicanalysisofacryogenicjet |