非单向流洁净室颗粒物浓度影响因素的正交模拟研究
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摘要
以某非单向流洁净室的尺寸、布置、使用情况建立模型以研究末端形式、回风口位置、换气次数三个因素对室内颗粒物浓度的影响。采用CFD(计算流体动力学)方法模拟计算了L9 (34)正交实验表对应9个工况下的流场及浓度场。选取四个参考区域的颗粒物浓度作为评价指标以进行极差分析和方差分析。结果表明:不同参考区域的因素影响大小排序不同。总体而言,末端形式是各局部颗粒物浓度的显著性因素,换气次数是室内平均浓度显著性因素。
A numerical model is built according to the size, layout and usage condition of a non-directional flow cleanroom to study the influence of terminal forms, position of outlet and air change rate on indoor particle concentration. The fluid and particle concentration field under 9 conditions of a L9(3~4) orthogonal experiment table is calculated by CFD(computational fluid dynamics) method. Particle concentration in four reference areas is selected as evaluation index to conduct range and variance analysis. It turned out that the force grades various in different reference areas. In general,terminal form is significant factor of local concentration while air change rate is that of average indoor concentration.
A numerical model is built according to the size, layout and usage condition of a non-directional flow cleanroom to study the influence of terminal forms, position of outlet and air change rate on indoor particle concentration. The fluid and particle concentration field under 9 conditions of a L9(3~4) orthogonal experiment table is calculated by CFD(computational fluid dynamics) method. Particle concentration in four reference areas is selected as evaluation index to conduct range and variance analysis. It turned out that the force grades various in different reference areas. In general,terminal form is significant factor of local concentration while air change rate is that of average indoor concentration.
引文
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[14] GB504507-2013,医药工业洁净厂房设计规范.[S]
[15] Zhang J. Pharmaceutical cleanroom design[J]. ASHRAE Journal, 2004, 46(9)
[16]刘明亮,张思青,李胜男.网格对CFD模拟结果的影响分析[J].水电与抽水蓄能, 2016, 2(4)
[2] GB 50073-2013,洁净厂房设计规范.[S]
[3]刘炜,刘俊杰,马群.非单向流洁净室洁净度的理论计算与实验研究[J].建筑科学, 2010, 26(10)
[4]樊瑛,郑庆红.方形散流器送风参数对气流分布影响实验研究[J].建筑热能通风空调,2005, 24(5)
[5]傅斌,李晓冬.对方形散流器送风口的数值描述方法及应用[J].哈尔滨商业大学学报(自然科学版),2004,20(2)
[6]贾猛.洁净室中高效过滤器出风效果的模拟分析[J].洁净与空调技术,2011(4)
[7]赵彬,曹莉,李先庭.洁净室孔板型风口入流边界条件的处理方法[J].清华大学学报,2003,43(5)
[8]杨柳,黄晨.多种气流组织洁净室特性及其两区模型研究[J].洁净与空调技术, 2014(1)
[9]赵旭东,张军伟.顶送单侧下回气流组织在1000级洁净室中的应用[J].太原工业大学学报1996,27(2)
[10]李云广,南国良,马宗虎.乱流洁净室中换气次数对污染物扩散影响的数值模拟[J].医疗卫生装备,2017,28(6)
[11] Chun Yong Khoo, Chung-Chieh Lee, Shih-Cheng Hu. An experimental study on the influences of air change rate and free air ratio of raised-floor on cleanroom particle concentrations[J]. Building and Environment,48(2012)
[12]许钟麟.空气洁净技术原理[M].北京:科学出版社,2003
[13]刘泽勤,李思泽,左珍君.方形散流器送风角度对室内热舒适度的影响[J].河北工业大学学报, 2015(6)
[14] GB504507-2013,医药工业洁净厂房设计规范.[S]
[15] Zhang J. Pharmaceutical cleanroom design[J]. ASHRAE Journal, 2004, 46(9)
[16]刘明亮,张思青,李胜男.网格对CFD模拟结果的影响分析[J].水电与抽水蓄能, 2016, 2(4)
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