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作者周伟,朱金波,闵凡飞,冯岸岸,张勇（2019）在《喷射式浮选机射流搅拌装置流场分析及结构优化》一文中研究指出：以喷射式浮选机射流搅拌装置结构优化为目的,选用合理的CFD数值模拟计算方案,综合考查引射性能和流场特性两个指标,对面积比、喉嘴距、喉管长度、引射管布置方式和位置进行优化计算;设计了长喉管、短喉管、导流叶片喷嘴和无导流叶片喷嘴共4组不同结构参数的射流搅拌装置试验,考查并验证了喉管长度和喷嘴内导流叶片对引射能力的影响;采用激光粒子测速仪测试了喷嘴内导流叶片对射流流束形态演变的影响。结果表明:面积比a=1.96～3.24,喉嘴距L_e=0.2D_h～0.6D_h(D_h为喉管直径)、引射管采用双侧对称布置、喷嘴内设置导流叶片及喉管长度在6D_z～12D_z(D_z为喷嘴直径),射流装置的混合效率最理想,引射管布置位置对混合效率影响较小;喷射室压力在0.145～0.160 MPa时,喷嘴内设置导流叶片,长、短喉管吸气能力平均至少提高30.73%和33.94%,引射管全开时长喉管较短喉管的吸气能力高出15%以上。结构参数对流场的影响表现在,面积比增大及引射管靠近喷嘴出口布置,喉管内射流流束的中心速度衰减越快,喉嘴距变化对中心速度的衰减影响较小;喉管长度≤6D_z时,流束中心的流核一直持续到喉管出口,引射流体和工作流体在喉管内动、质量交换不完全;喷嘴内设置导流叶片,有利于流束中心的流核区减小,原因是流束以旋转射流的形式从喷嘴喷出,形成了更有利于工作流体与引射流体动、质量交换的湍流流场;基于理想的引射性能和流场特性,面积比a=3.24、喉嘴距L_e=0.6D_h、引射管采用双侧对称且正对流核区域布置方式、喷嘴内设置导流叶片及喉管长度在6D_z～12D_z为射流搅拌装置的最优结构参数。
Abstract
yi pen she shi fu shua ji she liu jiao ban zhuang zhi jie gou you hua wei mu de ,shua yong ge li de CFDshu zhi mo ni ji suan fang an ,zeng ge kao cha yin she xing neng he liu chang te xing liang ge zhi biao ,dui mian ji bi 、hou zui ju 、hou guan chang du 、yin she guan bu zhi fang shi he wei zhi jin hang you hua ji suan ;she ji le chang hou guan 、duan hou guan 、dao liu xie pian pen zui he mo dao liu xie pian pen zui gong 4zu bu tong jie gou can shu de she liu jiao ban zhuang zhi shi yan ,kao cha bing yan zheng le hou guan chang du he pen zui nei dao liu xie pian dui yin she neng li de ying xiang ;cai yong ji guang li zi ce su yi ce shi le pen zui nei dao liu xie pian dui she liu liu shu xing tai yan bian de ying xiang 。jie guo biao ming :mian ji bi a=1.96～3.24,hou zui ju L_e=0.2D_h～0.6D_h(D_hwei hou guan zhi jing )、yin she guan cai yong shuang ce dui chen bu zhi 、pen zui nei she zhi dao liu xie pian ji hou guan chang du zai 6D_z～12D_z(D_zwei pen zui zhi jing ),she liu zhuang zhi de hun ge xiao lv zui li xiang ,yin she guan bu zhi wei zhi dui hun ge xiao lv ying xiang jiao xiao ;pen she shi ya li zai 0.145～0.160 MPashi ,pen zui nei she zhi dao liu xie pian ,chang 、duan hou guan xi qi neng li ping jun zhi shao di gao 30.73%he 33.94%,yin she guan quan kai shi chang hou guan jiao duan hou guan de xi qi neng li gao chu 15%yi shang 。jie gou can shu dui liu chang de ying xiang biao xian zai ,mian ji bi zeng da ji yin she guan kao jin pen zui chu kou bu zhi ,hou guan nei she liu liu shu de zhong xin su du cui jian yue kuai ,hou zui ju bian hua dui zhong xin su du de cui jian ying xiang jiao xiao ;hou guan chang du ≤6D_zshi ,liu shu zhong xin de liu he yi zhi chi xu dao hou guan chu kou ,yin she liu ti he gong zuo liu ti zai hou guan nei dong 、zhi liang jiao huan bu wan quan ;pen zui nei she zhi dao liu xie pian ,you li yu liu shu zhong xin de liu he ou jian xiao ,yuan yin shi liu shu yi xuan zhuai she liu de xing shi cong pen zui pen chu ,xing cheng le geng you li yu gong zuo liu ti yu yin she liu ti dong 、zhi liang jiao huan de tuan liu liu chang ;ji yu li xiang de yin she xing neng he liu chang te xing ,mian ji bi a=3.24、hou zui ju L_e=0.6D_h、yin she guan cai yong shuang ce dui chen ju zheng dui liu he ou yu bu zhi fang shi 、pen zui nei she zhi dao liu xie pian ji hou guan chang du zai 6D_z～12D_zwei she liu jiao ban zhuang zhi de zui you jie gou can shu 。
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论文作者分别是来自煤炭学报的周伟,朱金波,闵凡飞,冯岸岸,张勇，发表于刊物煤炭学报2019年07期论文，是一篇关于射流搅拌装置论文,数值模拟论文,结构优化论文,流场分析论文,混合效率论文,煤炭学报2019年07期论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自煤炭学报2019年07期论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：射流搅拌装置论文; 数值模拟论文; 结构优化论文; 流场分析论文; 混合效率论文; 煤炭学报2019年07期论文;