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第6期 夏德宏等:多孔材料热导率通用计算方法 ·711· 报,2004,25(1):112) 3结论 7]Wang M R,Pan N.Modeling and prediction of the effective ther- 通过分析多孔材料内部传热机理,提出一种适 mal conductivity of random open-cell porous foams.IntHeat Mass Transfer,2008,51(5/6):1325 用于各类多孔材料热导率的计算方法一二值化阵 [8]Xia D H,Chen Y,Guo S S.Fractal model for thermal conductivity 列法.以闭孔泡沫铝和硅酸铝耐火纤维材料为例, of fibrous insulation.J Therm Sci Technol,2008,7(2):97 利用本文提出的二值化阵列法对多孔材料的热导率 (夏德宏,陈勇,郭珊珊.隔热纤维体的热导率分形模型.热科 进行计算,计算结果与文献的实验测量值具有较好 学与技术,2008,7(2):97) 的一致性,验证了此方法的准确性.该方法可以对 [9]Cheng Y G,Zhou Y,Zhu J H,et al.Thermal conductivities of fi- brous refractory at high temperature with fractal method.I Chem 任意材料进行计算,计算简单且速度快,突破了传统 Ind Eng,2002,53(11):1193 方法在适用性上的局限性 (程远贵,周勇,朱家驿,等.耐火纤维材料高温热导率的分形 化工学报,2002,53(11):1193) 参考文献 [10]Yu Z T.Hu Y C,Tian T,et al.Fractal model for predicting ef- Crane R A,Vachon R I.A prediction of the bounds on the effec- fective thermal conductivity perpendicular to fibres of wood.J tive thermal conductivity of granular materials.Int Heat Mass Zhejiang Univ Eng Sci,2007,41(2)351 Transfer,1977,20(7):711 (俞自涛,胡亚才,田甜,等.木材横纹有效导热系数的分形 Zhang X L,Chen JZ,CuiZ K.Thermal conductivity of ordinary 模型.浙江大学学报:工学版,2007,41(2):351) alumino-silicate refractory fiber felts.Iron Steel,1994,29 (9): [11]Wang J F,Carson J K,North M F,et al.A new approach to modelling the effective thermal conductivity of heterogeneous ma- (张晓丽,陈洁珍,崔之开.普通硅酸铝耐火纤维毡导热系数 terials.Int J Heat Mass Transfer,2006,49 (17/18):3075 的研究.钢铁,1994,29(9):62) [12]Luikov A V.Heat and Mass Transfer.Moscow:Mir Publishers, B]Abu-Hamdeh N H,Khdair A I,Reeder R C.A comparison of two 1980 methods used to evaluate thermal conductivity for some soils.Int [13]Feng Y,Zhu ZG,Tao N,et al.Thermal conductivity of closed- Heat Mass Transfer,2001,44 (5):1073 cell aluminium alloy foam.Acta Metall Sin,2003,39 (8):817 4]StaggsJE J.Estimating the thermal conductivity of chars and por- (凤仪,朱震刚,陶宁,等.闭孔泡沫铝的导热性能.金属学报, ous residues using thermal resistor networks.Fire Saf J,2002,37 2003,39(8):817) (1):107 [14]Xia D H,Guo SS,Ren L.Fractal structure reconstruction for [5]Yu B M.Analysis of heat and mass transfer in fractal media.Eng alumina-silicate refractory fiber and simulation of the thermal con- Thermophys,2003,24(3):481 ductivity.J Therm Sci,2010,19 (1):80. (郁伯铭.分形介质的传热与传质分析.工程热物理学报, 15] Guan L J,Tian W,Lian M.An experimental research on heat- 2003,24(3):481) insulating properties of ordinary fireproof fibre material.Jinmusi 6]Zhang D H,Shi M H.Heat conduction in fractal porous media. Univ Nat Sci Ed,1999,17(2):181 Eng Thermophys,2004,25 (1)112 (关丽君,田巍,廉梅.普通耐火纤维材料绝热性能的实验研 (张东辉,施明恒.分形多孔介质中的热传导.工程热物理学 究.佳木斯大学学报:自然科学版,1999,17(2):181)第 6 期 夏德宏等: 多孔材料热导率通用计算方法 3 结论 通过分析多孔材料内部传热机理,提出一种适 用于各类多孔材料热导率的计算方法———二值化阵 列法. 以闭孔泡沫铝和硅酸铝耐火纤维材料为例, 利用本文提出的二值化阵列法对多孔材料的热导率 进行计算,计算结果与文献的实验测量值具有较好 的一致性,验证了此方法的准确性. 该方法可以对 任意材料进行计算,计算简单且速度快,突破了传统 方法在适用性上的局限性. 参 考 文 献 [1] Crane R A,Vachon R I. A prediction of the bounds on the effec￾tive thermal conductivity of granular materials. Int J Heat Mass Transfer,1977,20( 7) : 711 [2] Zhang X L,Chen J Z,Cui Z K. Thermal conductivity of ordinary alumino-silicate refractory fiber felts. Iron Steel,1994,29 ( 9 ) : 62 ( 张晓丽,陈洁珍,崔之开. 普通硅酸铝耐火纤维毡导热系数 的研究. 钢铁,1994,29( 9) : 62) [3] Abu-Hamdeh N H,Khdair A I,Reeder R C. A comparison of two methods used to evaluate thermal conductivity for some soils. Int J Heat Mass Transfer,2001,44( 5) : 1073 [4] Staggs J E J. Estimating the thermal conductivity of chars and por￾ous residues using thermal resistor networks. Fire Saf J,2002,37 ( 1) : 107 [5] Yu B M. Analysis of heat and mass transfer in fractal media. J Eng Thermophys,2003,24( 3) : 481 ( 郁伯铭. 分形介质的传热与传质分析. 工程热物理学报, 2003,24( 3) : 481) [6] Zhang D H,Shi M H. Heat conduction in fractal porous media. J Eng Thermophys,2004,25( 1) : 112 ( 张东辉,施明恒. 分形多孔介质中的热传导. 工程热物理学 报,2004,25( 1) : 112) [7] Wang M R,Pan N. Modeling and prediction of the effective ther￾mal conductivity of random open-cell porous foams. Int J Heat Mass Transfer,2008,51( 5 /6) : 1325 [8] Xia D H,Chen Y,Guo S S. Fractal model for thermal conductivity of fibrous insulation. J Therm Sci Technol,2008,7( 2) : 97 ( 夏德宏,陈勇,郭珊珊. 隔热纤维体的热导率分形模型. 热科 学与技术,2008,7( 2) : 97) [9] Cheng Y G,Zhou Y,Zhu J H,et al. Thermal conductivities of fi￾brous refractory at high temperature with fractal method. J Chem Ind Eng,2002,53( 11) : 1193 ( 程远贵,周勇,朱家骅,等. 耐火纤维材料高温热导率的分形. 化工学报,2002,53( 11) : 1193) [10] Yu Z T. Hu Y C,Tian T,et al. Fractal model for predicting ef￾fective thermal conductivity perpendicular to fibres of wood. J Zhejiang Univ Eng Sci,2007,41( 2) : 351 ( 俞自涛,胡亚才,田甜,等. 木材横纹有效导热系数的分形 模型. 浙江大学学报: 工学版,2007,41( 2) : 351) [11] Wang J F,Carson J K,North M F,et al. A new approach to modelling the effective thermal conductivity of heterogeneous ma￾terials. Int J Heat Mass Transfer,2006,49( 17 /18) : 3075 [12] Luikov A V. Heat and Mass Transfer. Moscow: Mir Publishers, 1980 [13] Feng Y,Zhu Z G,Tao N,et al. Thermal conductivity of closed￾cell aluminium alloy foam. Acta Metall Sin,2003,39( 8) : 817 ( 凤仪,朱震刚,陶宁,等. 闭孔泡沫铝的导热性能. 金属学报, 2003,39( 8) : 817) [14] Xia D H,Guo S S,Ren L. Fractal structure reconstruction for alumina-silicate refractory fiber and simulation of the thermal con￾ductivity. J Therm Sci,2010,19( 1) : 80. [15] Guan L J,Tian W,Lian M. An experimental research on heat￾insulating properties of ordinary fireproof fibre material. J Jinmusi Univ Nat Sci Ed,1999,17( 2) : 181 ( 关丽君,田巍,廉梅. 普通耐火纤维材料绝热性能的实验研 究. 佳木斯大学学报: 自然科学版,1999,17( 2) : 181) ·711·
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