建立了多孔铝的一维瞬态对流换热模型,采用反演分析方法求得了多孔铝的体积对流换热系数.给出了多孔铝对流换热的无量纲准则关联式,并在较宽的孔结构范围内(孔隙率为60.0%～95.0%、孔径为2.5～6.0 mm)研究了孔结构对多孔铝换热系数的影响.结果表明:多孔铝的换热系数随着风速的增加而提高.在风速相同的条件下,换热系数随着孔径和孔隙率的减小而提高.在风机功率相同的条件下,换热系数随着孔隙率的增大而提高,在孔隙率约为85%时达到峰值.
参考文献
| [1] | M.F.Ashby,T.J.Lu.Metal foams:A survey,Science in China(B),46(6),521(2003) |
| [2] | J.Banhart,Manufacture,characterization and application of cellular metals and metal foams,Progress in Materials Science,46(6),559(2001) |
| [3] | HE Deping,MA Liqun,YU Xingquan,The heat transfer characteristics of foamed metal with open pore,Chinese Journal of Materials Research,11(4),432(1997)(何德坪,马立群,余兴泉,新型通孔泡沫铝的传热特性,材料研究学报,11(4),432(1997)) |
| [4] | J.S.Noh,K.B.Lee,C.G.Lee,Pressure loss and forced convective heat trailsfer in an annulus filled with aluminum foam,International Communications in Heat and Transfer,33,434(2006) |
| [5] | K.Boomsma,D.Poulikakos,F.Zwick,Metal foams as compact high performance heat exchangers,Mechanics of Materials,35,1161(2003) |
| [6] | ZHANG Houlei,TAN Junjie,ZHANG Lixin,Measurement of volumetric convective heat transfer coefficient in porous aluminum,Journal of Chemical Industry and Engineering(China),55(10),1710(2004)(张后雷,谭俊杰,章立新,多孔铝内体积对流传热系数的测量,化工学报,55(10),1710(2004)) |
| [7] | HE Deping,WEN Desun,ZHANG Yong,SHU Guangji,The infiltration process of molten Al into porous media,Chinese Journal of Materials Research,11(2),113(1997)(何德坪,闻德荪,张勇,舒光冀,铝熔体在多孔介质中的渗流过程,材料研究学报,11(2),113(1997)) |
| [8] | ZHANG Weikai,LI Naizhe,HE Deping,Preparation of porous Al with high porosity by infiltration method,The Chinese Journal of Nonferrous Metals,15(8),1248(2005)(张伟开,李乃哲,何德坪,渗流法制备高孔隙率多孔铝,中国有色金属学报,15(8),1248(2005)) |
| [9] | CAO Yuzhang,QIU Xuguang,Experimental Heat Transfer(Beijing,National Defence Industry Press,1998)P.234(曾玉璋,邱绪光,实验传热学(北京,国防工业出版社,1998)P.234) |
| [10] | X.Fu,R.Viskanta,J.P.Gore,Measurement and correlation of volumetric heat transfer coefficients of cellular ceramics,Experimental Thermal and Fluid Science,17,285(1998) |
| [11] | DU Jianhua,WANG Buxuan,Research on the forced convective heat transfer for fluid flow through porous media with internal heat source,Journal of Engineering Thermophysics,20(1),69(1999)(杜建华,王补宣,带内热源多孔介质中的受迫对流换热,工程热物理学报,20(1),69(1999)) |
| [12] | Fujio Kuwahara,Mitsuhiro Shirota,Akira Nakayama,A numerical study of interfacial convective heat transfer coefficient in two-energy equation model for convection in porous media,International Journal of Heat and Mass Transfer,44,1153(2001) |
| [13] | P.X.Jiang,Z.P.Ren,Numerical investigation of forced convection heat transfer in porous media using a thermal non-equilibrium model,International Journal of Heat and Fluid Flow,22,102(2001) |
| [14] | LIN Ruitai,Introduction to Heat and Mass Transfer in Porous Media(Beijing,Science Press,1995)P.53(林瑞泰,多孔介质传热传质引论(北京,科学出版社,1995)P.53) |
| [15] | YANG Donghui,HE Deping,Porosity of porous Al alloys,Science in China(B),44(4),411(2001) |
| [16] | CHEN Feng,ZHANG Aiwen,HE Deping,Control of the degree of pore-pening for porous metals,Chinese Journal of Materials Research,13(6),591(1999)(陈锋,张爱文,何德坪,多孔金属通孔度的控制,材料研究学报,13(6),591(1999)) |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%