非能动安全壳冷却系统(Passive Containment Cooling System,PCS)是第三代非能动反应堆的专设安全系统之一,用于在事故情况下导出安全壳内热量。基于非能动安全壳冷却系统综合性能试验台架(Containment safety v Erification via integ ...非能动安全壳冷却系统(Passive Containment Cooling System,PCS)是第三代非能动反应堆的专设安全系统之一,用于在事故情况下导出安全壳内热量。基于非能动安全壳冷却系统综合性能试验台架(Containment safety v Erification via integ Ral Test,CERT),本文研究影响PCS系统冷却效果的关键因素。采用安全壳分析程序针对CERT试验台架进行建模和计算,将计算结果与试验结果进行了对比验证。在此基础上模拟了冷管段双端断裂事故喷放下的试验壳内压力响应,并对壳外冷却水流量、壳外冷却水膜覆盖率、环腔风速等关键参数进行了敏感性分析。结果表明,冷却剂丧失事故(Loss Of Coolant Accident,LOCA)工况下,壳内压力经历两个峰值后逐渐降低,峰值压力0.266 1 MPa。壳外冷却水流量、水膜覆盖率对冷却效果影响显著,二者的降低将造成壳内压力的升高;环腔风速的增大有一定的降压作用。展开更多
Since the outbreak of the novel coronavirus(2019-nGoV),China has carried out close cooperation with international organizations and governments on many fronts,including data-sharing,information notification and citize...Since the outbreak of the novel coronavirus(2019-nGoV),China has carried out close cooperation with international organizations and governments on many fronts,including data-sharing,information notification and citizen evacuation,to curb the virus'global spread.展开更多
Northwestern Shanxi folk songs,Located in northwestern Shanxi province,Hequ is home to Errentai Opera and Hequ folk songs,which were both on the first national intangible cultural heritage list in 2006.This forthcomin...Northwestern Shanxi folk songs,Located in northwestern Shanxi province,Hequ is home to Errentai Opera and Hequ folk songs,which were both on the first national intangible cultural heritage list in 2006.This forthcoming concert,dedicated to the folk songs of Hequ,will be performed by Hequ Folk Songs and Errentai Art Troupe.展开更多
With a n ame that trans-lates as'pretty sister;'Hao Meimei boys Qing Hao and Zhang Xiaohou are used to subverting expecta-tions.Within two years,the in die-folk duo have gone from working as an independent ill...With a n ame that trans-lates as'pretty sister;'Hao Meimei boys Qing Hao and Zhang Xiaohou are used to subverting expecta-tions.Within two years,the in die-folk duo have gone from working as an independent illustrator and construction worker to playing venues such as the Shanghai Oriental Art Center as part of their first national tour.While in town,they chatted with us about their upcoming plans,pursuing music full-time and failing on reality TV.展开更多
We have tickets to Boris Giltburg(p64),Voco Novo(p64),the Hong Kong Philharmonic(p65)and the Strauss 150th anniversary concert,part II(p67)to give away.Simply solve our Inter national Women's Day cryptic pictures ...We have tickets to Boris Giltburg(p64),Voco Novo(p64),the Hong Kong Philharmonic(p65)and the Strauss 150th anniversary concert,part II(p67)to give away.Simply solve our Inter national Women's Day cryptic pictures and send the answers to prd.editor@urbanatomy.com with the performance you'd like to attend as the subject.展开更多
文摘Since the outbreak of the novel coronavirus(2019-nGoV),China has carried out close cooperation with international organizations and governments on many fronts,including data-sharing,information notification and citizen evacuation,to curb the virus'global spread.
文摘Northwestern Shanxi folk songs,Located in northwestern Shanxi province,Hequ is home to Errentai Opera and Hequ folk songs,which were both on the first national intangible cultural heritage list in 2006.This forthcoming concert,dedicated to the folk songs of Hequ,will be performed by Hequ Folk Songs and Errentai Art Troupe.
文摘With a n ame that trans-lates as'pretty sister;'Hao Meimei boys Qing Hao and Zhang Xiaohou are used to subverting expecta-tions.Within two years,the in die-folk duo have gone from working as an independent illustrator and construction worker to playing venues such as the Shanghai Oriental Art Center as part of their first national tour.While in town,they chatted with us about their upcoming plans,pursuing music full-time and failing on reality TV.
文摘We have tickets to Boris Giltburg(p64),Voco Novo(p64),the Hong Kong Philharmonic(p65)and the Strauss 150th anniversary concert,part II(p67)to give away.Simply solve our Inter national Women's Day cryptic pictures and send the answers to prd.editor@urbanatomy.com with the performance you'd like to attend as the subject.
