{"id":883,"date":"2020-08-06T13:40:00","date_gmt":"2020-08-06T05:40:00","guid":{"rendered":"https:\/\/cryost.cn\/?p=883"},"modified":"2020-08-26T13:43:42","modified_gmt":"2020-08-26T05:43:42","slug":"%e9%a9%ac%e5%8e%9f%e7%9a%84%e8%ae%ba%e6%96%87%e8%a2%ab%e5%9b%bd%e9%99%85%e6%b0%a2%e8%83%bd%e6%8e%a5%e6%94%b6-2","status":"publish","type":"post","link":"https:\/\/cryost.cn\/?p=883","title":{"rendered":"\u9a6c\u539f\u7684\u8bba\u6587\u88ab\u56fd\u9645\u6c22\u80fd\u63a5\u6536"},"content":{"rendered":"\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p style=\"font-size:18px\"><strong>International Journal of Hydrogen Energy<\/strong><br>2020<\/p>\n\n\n\n<p style=\"font-size:18px\" class=\"has-text-color has-vivid-cyan-blue-color\"><strong><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0360319920321935?via%3Dihub\" target=\"_blank\" rel=\"noreferrer noopener\">Numerical investigation on chill-down and thermal stress characteristics of a LH<sub>2<\/sub>\u00a0tank during ground filling<\/a><\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\">Y. Ma<sup>a,b<\/sup>,  K. Zhu<sup>a,b<\/sup>,  Y.Z. Li<sup>a<\/sup>,  F.S. Xie<sup>a<\/sup><br><sup>a<\/sup>Xi&#8217;an Jiaotong University, Institute of Refrigeration and Cryogenic Engineering, Xi&#8217;an, 710049, China<br><sup>b<\/sup>Southern University of Science and Technology, Department of Materials Science and Engineering, Shenzhen, 518055, China<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">\u6458\u8981\uff1a<\/h5>\n\n\n\n<p style=\"font-size:18px\">To investigate the thermal and structural characteristics of a flight-scale LH<sub>2<\/sub>\u00a0tank during ground fillings, a CFD model and a structural analysis model are established to simulated the chill-down process and the induced thermal stress behavior of the tank, respectively. Results show that, at the early stage of filling, a severe temperature gradient appears at the liquid level, leading to a remarkable local concentration of thermal stress, while the maximal thermal deformation is at the outlet region. After the local wall is chilled down sufficiently, the temperature jump at the interface vanishes as well as the local thermal stress, while the maximal thermal deformation is located at the middle height of tank. The thermal stress is most serious at the beginning stage of filling and the maximum appears at the tank bottom. Moreover, the non-uniformity of the temperature distribution and the average thermal stress level within the tank wall both increase with the filling rate. At a filling rate of 7.5\u00a0kg\u00b7s<sup>\u22121<\/sup>, the maximal thermal stress and thermal deformation of the target tank are more than 70\u00a0MPa and 30\u00a0mm.<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Numerical investigation on chill-down and thermal stress characteristics of a LH2 tank during ground filling<\/p>\n","protected":false},"author":1,"featured_media":607,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"_links":{"self":[{"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/posts\/883"}],"collection":[{"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=883"}],"version-history":[{"count":0,"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/posts\/883\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=\/wp\/v2\/media\/607"}],"wp:attachment":[{"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=883"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=883"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cryost.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=883"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}