WAVE INTERACTION WITH PERFORATED CAISSON BREAKWATERS

The reflection coefficient of perforated caissons and the total horizontal forces acting on them were experimentally and numerically analyzed and discussed when wave propagates normally. To consider the viscosity effect of fluid and nonlinear action of waves on structures, the VOF (Volume Of Fluid) method combined with the k-ε turbulence model was used to simulate the interaction between waves and structures. Governing equations were solved with the finite difference method. Through 2D experimental study in the wave flume, the empirical relationship between the reflection coefficient of perforated caissons and the main affecting factors were obtained from the experimental data using the least square method. Also the correlation between the ratio of the total horizontal force acting on perforated caisson and the force acting on solid caisson and the main affecting factors were regressed from the experimental data.     

WTO: IPRs Issues in Standardization (Beijing) International Symposium

On April 17th 2007, over 200participants, among them business leaders, IT engineers, the enterprise representatives and some standardization experts and scholars from all over the world gathered in Beijing to attend the International Seminar on "WTO: Intellectual Property Right Issues In Standardization"     

掀起小编的“盖头”来（一）——写在前面的话

应老安之约写一篇自揭小编老底以博读者一悦的文章后,我便毫不犹豫地选了Cornel。     

2006香港公开模型大赛落下帷幕

本刊讯:2006年香港公开模型大赛2006年12月2日至3日在上环文娱中心举办.香港公开模型大赛始于1998年,至今已举办10届.此项赛事是香港地区颇具规模的模型比赛,其影响力已辐射至内地,不时有内地模友赴港参赛并取得佳绩.     

NUMERICAL STUDY ON SORET-EFFECT AND DUFOUR-EFFECT FOR DOUBLE-DIFFUSIVE NATURAL CONVECTION IN POROUS ENCLOSURE

The influences of Soret effect and Dufour effect on the natural convection and heat and mass transfer for a porous enclosure were investigated by means of the penalty finite element method. Numerical results indicate that the Soret and Dufour effects have significant influences on heat and mass transfer in the presence of large temperature gradient and concentration gradient.     

水电站厂内经济运行对象模型研究

通过对水电站厂内经济运行过程的数学模型和求解方法的深入分析，提出了水电站经济厂内运行的对象模型，按照对象化设计的思路，把相关特征数据和约束条件封装成对象的成员属性，把模型求解方法封装成对象的成员方法，各对象模型既可单独计算实现独自功能，也可通过各对象成员接口，共同实现复杂功能，提高了代码的重用性、可扩展性和可靠性。图1幅，表4个。     

The Inventory for Chinese LFC in 2006

1. Introduction Lost Foam Casting has been introduced into China for two decades, and it is getting more popularity in foundry industry.In China there are two associations responsible for the LFC industry and academic exchanges: Chinese Lost Foam Casting Society (CLFCS) and Chinese Association of Full Mold Casting.     

PHYSICAL SIMULATION OF INTERFACIAL CONDITIONS IN HOT FORMING OF STEELS

1.~nonNUInericalmodellingbythefiniteelement(FE)methodhasbecomeaneffectiveandeconomyicmeansforsimulatingmetalfoeingprocesses.However,accuratemodellingdemandsthecorrectdefinitionandinputsofthedataforthethermalandphysicalpIDPertiesoftheworkpieceandtoolmaterials,theboUndaryconditionsattheworkpiece--toolinterfaceandinotherareas,inadditiontoappropriatemeshgenerationandnumericalsolutions.Althoughmostofthematerialdataareavailable,thedataforinterfacialheattransferandfrictionconditions,Whichhavesubst…     

CYCLIC DEFORMATION OF FACE CENTERED CUBIC CRYSTALS AND ITS DISLOCATION INTERACTION MODEL——Ⅱ.DISLOCATION INTERACTION MODEL OF CYCLIC DEFORMATION

A dislocation interaction model has been proposed for cyclic deformation of fcc crystals.Ac-cording to this model,cyclic stress-strain responses and saturation dislocation structures of acrystal are associated with the modes and intensities of dislocation interactions between slipsystems active in the crystal; and,hence,may be predicted by the location of its tensile axis inthe crystallographic triangle.This model has successfully explained the different behaviours ofdouble-slip crystals and multi-slip behaviours of some crystals with orientations usually con-sidered as single-slip ones.