RAPID CALCULATION OF THE THERMAL IMPULSE TRANSIENT STRESS OF THE PRESSURIZER SPRAY NOZZLE BASED ON DOUBLE TEMPERATURE BOUNDARY GREEN’S FUNCTION
The thermal transient load of the primary loop nuclear pipeline will cause fatigue damage at sensitive locations.And cumulative fatigue damage factors of these sensitive locations need to be monitored during the life extension of the nuclear power plant,and thermal transient stresses need to be calc...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2020-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.01.027 |
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| author | WANG WeiWei DONG XiaoMei GAO BingJun YU WeiWei XUE Fei |
| author_facet | WANG WeiWei DONG XiaoMei GAO BingJun YU WeiWei XUE Fei |
| author_sort | WANG WeiWei |
| collection | DOAJ |
| description | The thermal transient load of the primary loop nuclear pipeline will cause fatigue damage at sensitive locations.And cumulative fatigue damage factors of these sensitive locations need to be monitored during the life extension of the nuclear power plant,and thermal transient stresses need to be calculated rapidly during online monitoring. Taking the thermal shock of the spray nozzle of pressurizer as an example,the double temperature boundary Green’s function method is discussed. By the volume integration of Green’s function,the transient thermal stress under the heat-up condition is calculated. The accuracy of the two temperature boundary Green’s function is verified by comparing with the direct calculation results of finite element method.Studies have shown that the Green’s function should be established separately for subdivisions which are divided according to the differences of the flow heat transfer boundary（ such as the convection heat transfer coefficient） and the width of the temperature range. While in a certain temperature range,it is feasible to establish the Green’s function based on the average temperature of the temperature range with large enough step temperature. |
| format | Article |
| id | doaj-art-08843c0e888e4639a42286da58b267fd |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2020-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-08843c0e888e4639a42286da58b267fd2025-01-15T02:28:33ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692020-01-014217518030606935RAPID CALCULATION OF THE THERMAL IMPULSE TRANSIENT STRESS OF THE PRESSURIZER SPRAY NOZZLE BASED ON DOUBLE TEMPERATURE BOUNDARY GREEN’S FUNCTIONWANG WeiWeiDONG XiaoMeiGAO BingJunYU WeiWeiXUE FeiThe thermal transient load of the primary loop nuclear pipeline will cause fatigue damage at sensitive locations.And cumulative fatigue damage factors of these sensitive locations need to be monitored during the life extension of the nuclear power plant,and thermal transient stresses need to be calculated rapidly during online monitoring. Taking the thermal shock of the spray nozzle of pressurizer as an example,the double temperature boundary Green’s function method is discussed. By the volume integration of Green’s function,the transient thermal stress under the heat-up condition is calculated. The accuracy of the two temperature boundary Green’s function is verified by comparing with the direct calculation results of finite element method.Studies have shown that the Green’s function should be established separately for subdivisions which are divided according to the differences of the flow heat transfer boundary（ such as the convection heat transfer coefficient） and the width of the temperature range. While in a certain temperature range,it is feasible to establish the Green’s function based on the average temperature of the temperature range with large enough step temperature.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.01.027Green’s functionThermal stressNuclear pipeThermal transient |
| spellingShingle | WANG WeiWei DONG XiaoMei GAO BingJun YU WeiWei XUE Fei RAPID CALCULATION OF THE THERMAL IMPULSE TRANSIENT STRESS OF THE PRESSURIZER SPRAY NOZZLE BASED ON DOUBLE TEMPERATURE BOUNDARY GREEN’S FUNCTION Jixie qiangdu Green’s function Thermal stress Nuclear pipe Thermal transient |
| title | RAPID CALCULATION OF THE THERMAL IMPULSE TRANSIENT STRESS OF THE PRESSURIZER SPRAY NOZZLE BASED ON DOUBLE TEMPERATURE BOUNDARY GREEN’S FUNCTION |
| title_full | RAPID CALCULATION OF THE THERMAL IMPULSE TRANSIENT STRESS OF THE PRESSURIZER SPRAY NOZZLE BASED ON DOUBLE TEMPERATURE BOUNDARY GREEN’S FUNCTION |
| title_fullStr | RAPID CALCULATION OF THE THERMAL IMPULSE TRANSIENT STRESS OF THE PRESSURIZER SPRAY NOZZLE BASED ON DOUBLE TEMPERATURE BOUNDARY GREEN’S FUNCTION |
| title_full_unstemmed | RAPID CALCULATION OF THE THERMAL IMPULSE TRANSIENT STRESS OF THE PRESSURIZER SPRAY NOZZLE BASED ON DOUBLE TEMPERATURE BOUNDARY GREEN’S FUNCTION |
| title_short | RAPID CALCULATION OF THE THERMAL IMPULSE TRANSIENT STRESS OF THE PRESSURIZER SPRAY NOZZLE BASED ON DOUBLE TEMPERATURE BOUNDARY GREEN’S FUNCTION |
| title_sort | rapid calculation of the thermal impulse transient stress of the pressurizer spray nozzle based on double temperature boundary green s function |
| topic | Green’s function Thermal stress Nuclear pipe Thermal transient |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2020.01.027 |
| work_keys_str_mv | AT wangweiwei rapidcalculationofthethermalimpulsetransientstressofthepressurizerspraynozzlebasedondoubletemperatureboundarygreensfunction AT dongxiaomei rapidcalculationofthethermalimpulsetransientstressofthepressurizerspraynozzlebasedondoubletemperatureboundarygreensfunction AT gaobingjun rapidcalculationofthethermalimpulsetransientstressofthepressurizerspraynozzlebasedondoubletemperatureboundarygreensfunction AT yuweiwei rapidcalculationofthethermalimpulsetransientstressofthepressurizerspraynozzlebasedondoubletemperatureboundarygreensfunction AT xuefei rapidcalculationofthethermalimpulsetransientstressofthepressurizerspraynozzlebasedondoubletemperatureboundarygreensfunction |