Eighth China Aerosol Conference cum Second Cross-Strait Aerosol Technology Conference, Nanjing, November 3-8, 2005

The twin conferences started with welcome speeches of many notables： Jun Chen, president of Nanjing University, Rongsehng Wu, CAS Academician, Yi Wang, officer of National Natural Science Foundation of China, Zhemin Tan, director of Atmospheric Science in Nanjing University, Roger Chen, professor from New York University, Shaw C, Liu, professor and chair of International Global Atmospheric Chemistry （IGAC）, Chung-Shin Yuan, professor from Sun Yat-Sen University, Mingxing Wang, professor of CAS Institute of Atmospheric Physics, and Tinjian Wang, professor from Nanjing University, who served as local organizer of the conferences,     

Letter to the Editor: Comments on the Paper “Inertia Effects in High-Rate Flow Through Heterogeneous Porous Media” by M. Fourar, R. Lenormand, M. Karimi-Fard, and R. Horne, Transport in Porous Media, DOI 10.1007/s11242-004-6800-6, 2005

In a recent article, Fourar et al. (Transp Porous Med, 2005, doi:10.1007/s11242-004-6800-6) analyzed the effect of heterogeneity in the permeability distribution on Forchheimer flow in porous media. They derived expressions to calculate the effective inertial coefficient in serial layers, parallel layers, and two-dimensional correlated media. Here, we highlight an inconsistency in their first-order expression for serial layers and extend their findings by providing closed-form expressions for the effective inertial coefficient in the case of a lognormal permeability distribution.     

A, ■-Ω METHOD FOR 3-D EDDY CURRENT ANALYSIS

I.IntroductionTheanalysisof3-Deddycurrentfieldisanimportantproblemintheelectromagneticinductionheatingandthe'electromagneticdesigns.Inrecentfifteenyears,numerousresearchesinthisfieldhavebeendonel'l,andA,9method['],T-Dmethod141andA'methodli'sletc.havebeenpfoposedearlyorlate.ButthereexisttwoquestionsintheirFEMcalculationsf(l)Therearenumerou$unknownqualltitiesofthenodesforthewholeregionalldthecalculationsarearduous;(2)Ontheinterfacesorsurfiloesfortheregionsofdifferentmedium,theelectromagnetic…     

Comment on “Mixed convection boundary layer flow over a horizontal plate with thermal radiation” by A. Ishak, Heat Mass Transfer, DOI 10.1007/s00231-009-0552-3

In a recent paper of Ishak (Heat Mass Transfer, doi:10.1007/s00231-009-0552-3, 2009) the similarity solutions of the title problem have been investigated numerically in some detail. The present note shows, however, that with the aid of a simple rescaling of the Prandtl number, the results reported by Ishak can easily be recovered from the well known solution of the same problem, without the effect of thermal radiation.     

RELATIONSHIP BETWEEN HORIZONTAL EXTINCTION COEFFICIENT AND PM10 CONCENTRATION IN XI＇AN, CHINA, DURING 1980-2002

Based on daily visibility data obtained from 1980-2002 and air pollution index data from 2001-2004 in Xi＇an, long-term variations and relationships for daily horizontal extinction coefficient and mass concentration of PM10 have been evaluated. A decreasing trend was found in horizontal extinction coefficient during the past 23 years, with higher values observed in 1980s relative to 1990s, and the highest and lowest values in winter and summer, respectively. Significant correlation and similar seasonal variations existed between horizontal extinction coefficient and PM10 concentration, suggesting the high influence of PM10 to the visibility drop at a site in the Guanzhong Plain of central China during the past two decades.     

A, φ-Ω METHOD FOR 3-D EDDY CURRENT ANALYSIS

After the field equations and the snonumuoo conditions between the interfaces for 3D eddy current problems Under various gauges were discussed, it was pointed cut in this paper that using the magnetic vector potential A. the electric scalar potential φ and Coulomb gauge ∇·A = 0 in eddy current regions and using the magntetic scalar potential Ω in the non-conducting regions are more suitable. All field equations, the boundary conditions, the interface continuity conditions and the corresponding variational principle of this method are also given.     

Comment on the paper “Transient MHD free convective flow past an infinite vertical plate embedded in a porous medium with viscous dissipation,Siva Reddy Sheri,R. Srinivasa Raju,Meccanica, DOI 10.1007/s11012-015-0285-y”

A numerical investigation of transient magnetohydrodynamic free convection flow past an infinite vertical plate embedded in a porous medium with viscous dissipation is presented in the above paper. The governing differential equations are transformed into a set of non-linear coupled partial differential equations and are solved numerically using the finite element method. Numerical results for the velocity, temperature and concentration profiles within the boundary layer are presented and discussed.     

继承,发展,开拓,创新

<正>今天是郭永怀先生诞辰110周年,我想就怎样传承郭先生的崇高精神和学术思想,并且落实到我们的实际工作中去谈一点感想。首先,因在简短的发言中不能全面回顾郭先生60年的光辉一生,但其中有一个事例特别值得我们深思。郭先生生活年代的中国是"东亚病夫",不能抵御日本人的侵略,所以,当时的热血青年都在思考救国之道。20世纪上半叶是航空工业突飞猛进的时