{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"计算机数值模拟在指导定向凝固工艺的制订上正起着越来越重要的作用。在定向凝固炉中进行叶片生产,由于炉内是真空环境,所以辐射换热在热量传输过程中占有很大比重。传统的辐射换热计算的重点是角系数的计算,带来计算时间长的问题。针对这种情况,本文提出了改进型Monte Carlo射线追踪法进行辐射换热计算,通过子空间的划分,并结合定向凝固的特点回避了角系数的直接计算,节省了计算时间。把该方法嵌入自行开发的三维模拟软件对柱状晶和单晶叶片的定向凝固过程进行了温度场模拟。并对实际叶片凝固过程进行温度场测试,模拟结果与实测结果吻合比较好。","authors":[{"authorName":"崔锴","id":"c266bc29-a6ad-4e6a-82dc-7a89b4050654","originalAuthorName":"崔锴"},{"authorName":"许庆彦","id":"76675ca2-6bf8-47df-b79d-fcef9418a49f","originalAuthorName":"许庆彦"},{"authorName":"于靖","id":"2309b9a4-2776-4d8e-9757-1a5ac32c6f66","originalAuthorName":"于靖"},{"authorName":"柳百成","id":"0908b8db-296c-492b-a25d-690324e96cca","originalAuthorName":"柳百成"},{"authorName":"木间明彦","id":"7a7bc78b-0d8c-4905-9488-e057b8278d60","originalAuthorName":"木间明彦"},{"authorName":"黑木康德","id":"64ecfe45-3552-4ea1-8967-36d69d6e66c5","originalAuthorName":"黑木康德"},{"authorName":"横山文彦","id":"9b3290cc-8565-4c4c-ab43-5898e25d0e54","originalAuthorName":"横山文彦"}],"categoryName":"|","doi":"","fpage":"465","id":"0ef3f2c4-343f-41c3-acf5-8949ec14be81","issue":"5","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"1d882e11-cc4d-40ed-9968-239954097d40","keyword":"高温合金叶片","originalKeyword":"高温合金叶片"},{"id":"6331ac82-7448-4447-83a7-6185dbbfa350","keyword":"improved Monte Carlo ray tracing method","originalKeyword":"improved Monte Carlo ray tracing method"},{"id":"a9281d84-37fe-43b3-beb9-afc2b4231018","keyword":"null","originalKeyword":"null"}],"language":"zh","publisherId":"0412-1961_2007_5_17","title":"高温合金叶片定向凝固过程中辐射换热的计算","volume":"43","year":"2007"},{"abstractinfo":"提出改进型Monte Carlo射线追踪法进行辐射换热计算,通过子空间的划分,并结合定向凝固的特点回避了传统辐射换热计算中角系数的直接计算,节省了计算时间.把该方法嵌入自行开发的三维模拟软件对柱状晶和单晶叶片的定向凝固过程进行了温度场模拟,并对实际叶片凝固过程进行温度场测试,模拟结果与实测结果较好吻合.","authors":[{"authorName":"崔锴","id":"2ac769d4-343a-482f-91ce-935c5cecd744","originalAuthorName":"崔锴"},{"authorName":"许庆彦","id":"669d196d-fa44-424e-ba59-aecdca867f4a","originalAuthorName":"许庆彦"},{"authorName":"于靖","id":"e5c55b14-44bb-4bed-8c0c-120daca40914","originalAuthorName":"于靖"},{"authorName":"柳百成","id":"c59c7b3b-f608-4836-98e5-e33c645bf5c6","originalAuthorName":"柳百成"},{"authorName":"木间塚明彦","id":"573b7e6d-c415-4526-84a3-6aa219d55ccf","originalAuthorName":"木间塚明彦"},{"authorName":"黑木康德","id":"bc815f7c-d8f2-4c1b-a6a3-1778aedbb3c2","originalAuthorName":"黑木康德"},{"authorName":"横山文彦","id":"e9e9e917-6ad7-4668-b703-c90e5e3d2e16","originalAuthorName":"横山文彦"}],"doi":"10.3321/j.issn:0412-1961.2007.05.004","fpage":"465","id":"21a5b261-9808-4f05-8f5f-c5db1a4264e9","issue":"5","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"6df133d1-0773-4a74-b98a-c9a6d7e346f5","keyword":"高温合金叶片","originalKeyword":"高温合金叶片"},{"id":"2af799a1-bf79-4cdd-a19d-0b4127815b4d","keyword":"改进型Monte Carlo射线追踪法","originalKeyword":"改进型Monte Carlo射线追踪法"},{"id":"88b2dc2a-dfba-453a-9322-55c5df96c781","keyword":"辐射换热","originalKeyword":"辐射换热"},{"id":"1dd777a6-0056-4eea-a599-c423b61305b0","keyword":"定向凝固","originalKeyword":"定向凝固"},{"id":"c88572fe-ba6d-40c4-8af4-b67cee6d6ee7","keyword":"数值模拟","originalKeyword":"数值模拟"}],"language":"zh","publisherId":"jsxb200705004","title":"高温合金叶片定向凝固过程中辐射换热的计算","volume":"43","year":"2007"},{"abstractinfo":"基于热传输、溶质传输等基本传输过程及晶粒生长物理过程,建立了单相合金凝固过程微观组织及枝晶形貌演化的三维数学模型,并提出了新的生长模型和新的单元捕获规则,新规则在三维立方有限差分单元的基础上保证了晶粒在各个随机的优先生长方向生长时的枝晶连续性,并较好的在三维立方网格中体现出了晶粒形貌。此外,模型中考虑了成分过冷、曲率过冷和晶粒随机各向异性生长等重要因素。数值模拟结果表明,所建数学模型能够合理描述晶粒沿任意角度生长的过程,温度场、溶质场和微观组织形貌的模拟计算结果合理。多晶核定向生长模拟结果表明,多晶核定向竞争生长达到稳定状态时,枝晶间的一次枝晶臂间距与初始形核数目无关。本文所建立的模型和晶粒捕获规则适用于进一步定向凝固微观组织演化的研究。","authors":[{"authorName":"于靖","id":"5363bcef-4d9e-4b4d-b512-01730baa902c","originalAuthorName":"于靖"},{"authorName":"许庆彦","id":"084f84b1-6c7e-4b68-9039-ca91e3d4f2d7","originalAuthorName":"许庆彦"},{"authorName":"崔锴","id":"5f59477f-50a9-40ba-9b9e-378521095da7","originalAuthorName":"崔锴"},{"authorName":"柳百成","id":"2a3154b5-c9d7-41b8-b9dd-6b421d076ba9","originalAuthorName":"柳百成"}],"categoryName":"|","doi":"","fpage":"731","id":"9cbe3420-2911-47e6-96b9-7772b9cf61ef","issue":"7","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"3b7b6599-0bd9-424d-8c3f-a4bfb6bf7a7b","keyword":"微观组织","originalKeyword":"微观组织"},{"id":"cd4dd191-a42c-4322-9807-a1369aa7a064","keyword":"numerical simulation","originalKeyword":"numerical simulation"},{"id":"d0405a52-a09a-41f6-9f68-678d76902fc8","keyword":"single phase alloy","originalKeyword":"single phase alloy"},{"id":"e58f81ad-8f74-4e36-87f1-b818fad8e7c2","keyword":"dendrite alloy","originalKeyword":"dendrite alloy"}],"language":"zh","publisherId":"0412-1961_2007_7_1","title":"基于一种改进CA模型的微观组织模拟","volume":"43","year":"2007"},{"abstractinfo":"建立了基于Monte Carlo法的射线追踪模型,并用来动态处理定向凝固抽拉过程中多叶片间以及叶片与加热炉间的辐射换热过程.模型中考虑了抽拉速度、加热炉几何尺寸等影响,研究了2种抽拉速度下的温度分布.得到的温度采样点冷却曲线与实际冷却曲线进行了对比并得到了较好的结果.多叶片条件下,冷却区叶片靠近炉壁的温度低于同一水平线上靠近炉腔中心部分的温度.抽拉速度为7.0 mm/min时等温线的斜率高于抽拉速度为4.5 mm/min时的斜率.炉腔的几何尺寸对凝固过程温度分布有重要影响.","authors":[{"authorName":"于靖","id":"f25eb0fb-2e03-4c85-8d86-636dde7bf038","originalAuthorName":"于靖"},{"authorName":"许庆彦","id":"618afc9c-d4d6-4d03-b033-c013b0633cd3","originalAuthorName":"许庆彦"},{"authorName":"李嘉荣","id":"9ead162e-de3c-4ead-95e8-933e2cb2d263","originalAuthorName":"李嘉荣"},{"authorName":"袁海龙","id":"9c1708ec-7c8c-414b-a23b-60a88c0ab938","originalAuthorName":"袁海龙"},{"authorName":"刘世忠","id":"7d160021-f60d-4ae1-bd55-c1bf7cb4e951","originalAuthorName":"刘世忠"},{"authorName":"柳百成","id":"a6dd942d-a4b8-4338-89cd-67aeee5f83bd","originalAuthorName":"柳百成"}],"doi":"10.3321/j.issn:0412-1961.2007.10.019","fpage":"1113","id":"06b1feac-e51c-4ed7-b7c5-be54617f0ee5","issue":"10","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"3f6df40c-43ed-463b-940b-19adf5c04d01","keyword":"镍基高温合金","originalKeyword":"镍基高温合金"},{"id":"6c5e881c-2956-4dc1-a96d-6fa5fb5b8626","keyword":"定向凝固","originalKeyword":"定向凝固"},{"id":"28cff76f-fec5-4bfc-b21f-2298ef6b04ca","keyword":"多叶片","originalKeyword":"多叶片"},{"id":"59e4681b-7788-4b94-9353-691cfa7b6c55","keyword":"加热炉几何尺寸","originalKeyword":"加热炉几何尺寸"},{"id":"29a10a4c-2881-48ea-b5c4-1b42b97a36d0","keyword":"熔模铸造","originalKeyword":"熔模铸造"},{"id":"4f0c965f-3e9d-44d2-bb64-d118421e3fbd","keyword":"数值模拟","originalKeyword":"数值模拟"}],"language":"zh","publisherId":"jsxb200710019","title":"镍基高温合金多叶片定向凝固过程数值模拟","volume":"43","year":"2007"},{"abstractinfo":"基于热传输、溶质传输等基本传输过程及晶粒生长物理过程,建立了单相合金凝固过程微观组织及枝晶形貌演化的三维数学模型,并提出了新的生长模型和单元捕获规则,新规则在三维立方有限差分单元的基础上保证了晶粒在各个随机的优先生长方向生长时的枝晶连续性,并较好的在三维立方网格中体现出了晶粒形貌.此外,模型中考虑了成分过冷、曲率过冷和晶粒随机各向异性生长等重要因素.数值模拟结果表明,所建立的数学模型能够合理描述晶粒沿任意角度生长的过程,温度场、溶质场和微观组织形貌的模拟计算结果合理.多晶核定向生长模拟结果表明,多晶核定向竞争生长达到稳定状态时,枝晶间的一次枝晶臂间距与初始形核数目无关.所建立的模型和晶粒捕获规则适用于进一步定向凝固微观组织演化的研究.","authors":[{"authorName":"于靖","id":"2065bdaf-134d-4c03-8bb8-41a481207048","originalAuthorName":"于靖"},{"authorName":"许庆彦","id":"8677d609-2722-4744-9c01-7f95efc27ca8","originalAuthorName":"许庆彦"},{"authorName":"崔锴","id":"3b6ab3d4-bf04-4708-b626-5bf1f6f66d08","originalAuthorName":"崔锴"},{"authorName":"柳百成","id":"74faa1fe-d461-4464-9a5e-c68bb205a725","originalAuthorName":"柳百成"}],"doi":"10.3321/j.issn:0412-1961.2007.07.012","fpage":"731","id":"b18df22e-d8e5-4ef6-81bd-cfbb3df2c864","issue":"7","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"ba3fa40d-825c-47c3-a619-3087f52dec88","keyword":"微观组织","originalKeyword":"微观组织"},{"id":"6b02c377-5833-495d-bea9-fcc3563d709c","keyword":"数值模拟","originalKeyword":"数值模拟"},{"id":"ef11363e-9be8-4ecc-aa6a-cddc63053c9e","keyword":"单相合金","originalKeyword":"单相合金"},{"id":"e1460ae5-c580-47e0-9de7-994536993f5a","keyword":"枝晶","originalKeyword":"枝晶"},{"id":"535baba6-28f3-4ada-90fd-07f569dd7655","keyword":"CA模型","originalKeyword":"CA模型"}],"language":"zh","publisherId":"jsxb200707012","title":"基于一种改进CA模型的微观组织模拟","volume":"43","year":"2007"},{"abstractinfo":"以地下水水质检测数据为基础,从污染源分布及水文地质条件入手,对定靖油气田区地下水有机污染分布特征及其成因进行了研究,本文检测了卤代烃15项、氯代苯5项、单环芳烃5项、有机氯农药11项和多环芳烃1项,结果发现该地区地下水有机污染具有检出种类少,检出率高,浓度低,超标率低的特点.地下水中检出的有机污染物共有10种,分别为甲苯、苯、邻二甲苯、苯乙烯、二氯甲烷、1,2-二氯乙烷、1,2-二氯丙烷、1,2-二氯苯、1,2,4+三氯苯和苯并(a)芘,检出的9项有机污染物含量均低于《地下水质量标准》(GB/T 14848-2007)三类水限值.潜水的检出项比承压水的检出项多,检出率普遍比承压水的检出率高.不同地貌类型的有机污染物检出率为黄土区(28.87%)≈平原区(27.76%)>沙漠滩地区(11.11%)>河谷区(3.33%).最后,从工业污染源、有机物理化性质和水文地质条件对有机污染分布特征的成因进行了阐述.","authors":[{"authorName":"崔虎群","id":"395f6584-9884-4017-ae72-bce84a59aa91","originalAuthorName":"崔虎群"},{"authorName":"康卫东","id":"1ebd5f23-bd9e-43bf-a20e-05879769198e","originalAuthorName":"康卫东"},{"authorName":"李文鹏","id":"44c0ee31-6462-41b3-92c8-9ccfe155693c","originalAuthorName":"李文鹏"},{"authorName":"王润兰","id":"b34647db-57b6-4a49-a004-ed71c8677590","originalAuthorName":"王润兰"},{"authorName":"刘景涛","id":"5dc33615-29c8-4690-a777-1b3ad303fc97","originalAuthorName":"刘景涛"}],"doi":"10.7524/j.issn.0254-6108.2016.06.2015092502","fpage":"1212","id":"0c32d984-6a99-49b6-b7e4-8001e758b6c3","issue":"6","journal":{"abbrevTitle":"HJHX","coverImgSrc":"journal/img/cover/HJHX.jpg","id":"43","issnPpub":"0254-6108","publisherId":"HJHX","title":"环境化学 "},"keywords":[{"id":"a4816b63-a261-45a9-a156-3ff522eb5119","keyword":"定靖油气田区","originalKeyword":"定靖油气田区"},{"id":"8e7cbfa3-0bea-41ca-82b6-6a9c431410fd","keyword":"地下水","originalKeyword":"地下水"},{"id":"d53e86c2-6d5c-4fee-b32e-60918d34c115","keyword":"有机污染","originalKeyword":"有机污染"},{"id":"9b4193f9-605a-441a-b4d2-e3059c62a3cf","keyword":"成因浅析","originalKeyword":"成因浅析"}],"language":"zh","publisherId":"hjhx201606014","title":"定靖油气田区地下水有机污染特征初步分析","volume":"35","year":"2016"},{"abstractinfo":"中国和印度同为亚洲国家,在社会、经济等诸多方面具有相似性.印度是世界上最大的黄金消费国,将它作为研究对象,分析其国内居民储藏黄金的来源与动力,对如何提高中国的黄金需求,从而实现\"藏金于民\",具有现实意义.经过比较研究,笔者认为增加国内的投资需求是提高中国民间储藏黄金比例的有效途径之一.","authors":[{"authorName":"沈小炜","id":"4e216494-35e9-4d4d-8e8e-7cb6d32efa5b","originalAuthorName":"沈小炜"}],"doi":"10.3969/j.issn.1001-1277.2008.04.002","fpage":"4","id":"0a393019-4dfc-4b69-95c6-92aa18f1ba2f","issue":"4","journal":{"abbrevTitle":"HJ","coverImgSrc":"journal/img/cover/HJ.jpg","id":"44","issnPpub":"1001-1277","publisherId":"HJ","title":"黄金"},"keywords":[{"id":"d6762d79-659b-47aa-903f-c0abd21f8e4c","keyword":"储藏黄金","originalKeyword":"储藏黄金"},{"id":"c9769466-0f05-46f8-8188-3bfb8b9840ec","keyword":"来源与动力","originalKeyword":"来源与动力"},{"id":"60f49265-587b-4fff-8634-584c283611c2","keyword":"黄金需求结构","originalKeyword":"黄金需求结构"},{"id":"a84d397b-be05-4fad-8f4d-6062f3f56095","keyword":"消费需求","originalKeyword":"消费需求"},{"id":"33271686-6641-4297-8ec3-d506f88ed410","keyword":"投资需求","originalKeyword":"投资需求"}],"language":"zh","publisherId":"huangj200804002","title":"印度\"藏金于民\"给中国带来的启示","volume":"29","year":"2008"},{"abstractinfo":"利用溶胶-凝胶法制备MnZn功率铁氧体粉体,讨论了pH值对溶胶-凝胶转变的影响.粉体经850℃预烧,1200℃低温烧结制备出能工作于3MHz的高频MnZn功率铁氧体.","authors":[{"authorName":"余忠","id":"eb92b257-d78f-41af-a345-547749e0e74b","originalAuthorName":"余忠"},{"authorName":"兰中文","id":"a025297e-47d6-4f1a-a53f-6fe5d4f2f5ff","originalAuthorName":"兰中文"},{"authorName":"王京梅","id":"f28af458-f0c4-4029-b603-8860554e35f4","originalAuthorName":"王京梅"}],"doi":"","fpage":"328","id":"e7b3b23a-c3c7-4a5d-8e09-dac0a6cde82b","issue":"z2","journal":{"abbrevTitle":"CLDB","coverImgSrc":"journal/img/cover/CLDB.jpg","id":"8","issnPpub":"1005-023X","publisherId":"CLDB","title":"材料导报"},"keywords":[{"id":"a5326343-0ee5-478f-8f5b-2fb4dd0db54b","keyword":"溶胶-凝胶","originalKeyword":"溶胶-凝胶"},{"id":"54a13c80-0ebc-4f5a-be6e-c53fc6e87187","keyword":"高频","originalKeyword":"高频"},{"id":"92f7dcf3-c302-4af8-b905-1c8718aa7529","keyword":"MnZn功率铁氧体","originalKeyword":"MnZn功率铁氧体"}],"language":"zh","publisherId":"cldb2005z2103","title":"溶胶-凝胶法制备工作于3MHz频率的MnZn功率铁氧体","volume":"19","year":"2005"},{"abstractinfo":"通过非线性变换和特殊设计结点的B样条函数研究计算了囚禁于巴基球内的氢原子里德堡能级结构和振子强度. 结果表明, 巴基球等效势阱深度可以有选择的影响和改变里德堡原子的特性; 囚禁原子拥有很多自由原子所没有的奇特性质. ","authors":[{"authorName":"张现周","id":"09c4cf95-a682-4549-903b-20409b69ee63","originalAuthorName":"张现周"},{"authorName":"焦照勇","id":"4eee1b4a-5ea3-4de1-a609-c37a010c5edd","originalAuthorName":"焦照勇"},{"authorName":"饶建国","id":"5e3fa3f0-7a8b-4b4c-9e72-048fe3703221","originalAuthorName":"饶建国"}],"doi":"10.3969/j.issn.1007-4627.2002.02.047","fpage":"253","id":"99a0b71a-5dc1-4962-a09f-ffc27bdd7f0f","issue":"2","journal":{"abbrevTitle":"YZHWLPL","coverImgSrc":"journal/img/cover/YZHWLPL.jpg","id":"78","issnPpub":"1007-4627","publisherId":"YZHWLPL","title":"原子核物理评论 "},"keywords":[{"id":"13a4be3a-8168-46ee-a390-7e9c302926b8","keyword":"巴基球","originalKeyword":"巴基球"},{"id":"5de53973-06cf-4c45-9864-36b69c971521","keyword":"里德堡原子","originalKeyword":"里德堡原子"},{"id":"00810709-6afd-40e0-9ad3-62e8105d549d","keyword":"非线性变换","originalKeyword":"非线性变换"},{"id":"c131c591-c00c-412b-9b76-c19ed339c8c0","keyword":"B 样条函数方法","originalKeyword":"B 样条函数方法"}],"language":"zh","publisherId":"yzhwlpl200202047","title":"囚禁于巴基球内的原子的里德堡特性","volume":"19","year":"2002"},{"abstractinfo":"本文对浸泡于FC-72液池中的两个微小圆管进行了沸腾实验研究,得到了沸腾曲线和传热系数,并用Dv摄像机拍摄到了圆管出口处的沸腾状况,研究了管道尺寸对沸腾传热特性的影响.实验结果显示,管道尺寸对沸腾传热特性有显著的影响,传热系数和CHF随着管道尺寸的缩小而减小.直径为1.10 mm的圆管出口处在低热负荷加热时发生了汽泡阻塞,并导致了剧烈的沸腾滞后现象.","authors":[{"authorName":"毕勤成","id":"cb813eaa-f96e-432e-bf21-2af0640d352a","originalAuthorName":"毕勤成"},{"authorName":"赵天寿","id":"5590d660-a75b-44db-b974-406efc3d9b5a","originalAuthorName":"赵天寿"},{"authorName":"郭亚军","id":"7f0c0d1b-a1f9-4d63-9cac-0eaaf02f638b","originalAuthorName":"郭亚军"},{"authorName":"陈听宽","id":"6584ab67-fb39-41e3-9fe5-b6c1f9f97cba","originalAuthorName":"陈听宽"}],"doi":"","fpage":"609","id":"9664124e-8912-457e-b354-dd8684c23160","issue":"4","journal":{"abbrevTitle":"GCRWLXB","coverImgSrc":"journal/img/cover/GCRWLXB.jpg","id":"32","issnPpub":"0253-231X","publisherId":"GCRWLXB","title":"工程热物理学报 "},"keywords":[{"id":"6dce24f9-fc24-41a2-a502-6b0feff6d104","keyword":"沸腾传热","originalKeyword":"沸腾传热"},{"id":"308746c8-e0a0-4c43-8aac-f4a87b2ad9f6","keyword":"池沸腾","originalKeyword":"池沸腾"},{"id":"e0b94252-350f-4af1-a14f-4cc428b18c7e","keyword":"FC-72","originalKeyword":"FC-72"},{"id":"62d539df-9d7c-4448-a415-6b33956bb0ef","keyword":"微小圆管","originalKeyword":"微小圆管"}],"language":"zh","publisherId":"gcrwlxb200304020","title":"FC-72在浸泡于液池中的微小圆管内的沸腾传热","volume":"24","year":"2003"}],"totalpage":981,"totalrecord":9805}