铸造工艺仿真设计前处理及过程处理应用技术

以应用ProCAST和MAGMAsoft 2款软件为例，针对铸造工艺仿真设计前处理和过程处理每个环节的主要内容与使用方法进行了较为详细地归纳、分析和总结。提出了处理过程的技术路线，并系统地介绍了每项应用内容的操作平台与使用步骤，从而为高效地应用铸造工艺仿真设计提供理论和技术支持。     

The destabilizing effect of boundary slip on Bénard convection

We investigate the influence of slip boundary conditions on the onset of Bénard convection in an infinite fluid layer. It is shown that the critical Rayleigh number is a decreasing function of the slip length, and therefore boundary slip is seen to have a destabilizing effect. Chebyshev‐tau and compound matrix formulations for solving the eigenvalue problem are presented. Copyright © 2005 John Wiley & Sons, Ltd.     

氧帘快速割嘴在连铸板坯切割的应用

将氧帘快速切割的原理应用于连铸板坯切割生产中，着重研究连铸板坯快速切割割嘴的工艺过程及结构特点。该割嘴在实际生产应用中表明具有切割成本低、工效高、寿命长、使用方便、性能可靠、割缝较窄、切割断面质量好等优点，具有 很高的推广价值。     

连铸坯角部传热过程的数值模拟

在连铸理论与实践研究的基础上，提出了系数法铸坯角部热通量模型，为准确研究铸坯角部传热、应力和角部缺陷的产生提供了条件。     

On the application of slip boundary condition on curved boundaries

Hydrodynamic simulations of sloshing phenomena often involve the application of slip boundary condition at the wetted surfaces. If these surfaces are curved, the ambiguous nature of the normal vector in the discretized problem can interfere with the application of such a boundary condition. Even the use of consistent normal vectors, preferred from the point of view of conservation, does not assure good approximation of the continuum slip condition in the discrete problem, and non‐physical recirculating flow fields may be observed. As a remedy, we consider the Navier slip condition, and more successfully, the so‐called BC‐free boundary condition. Copyright © 2004 John Wiley & Sons, Ltd.     

铸件成品率微机管理系统

建立了铸件成品率的数学模型，以实现铸件成品率的微机管理．该系统具有统计、分析、判断、优化等各项功能，满足了生产现场对铸件成本的控制．     

变频调速在连铸改造中的应用

针对连铸生产中存在的问题,设计用变频调速系统取代直流调速系统.阐述了系统的构成和工作过程,实现PC对变频器的控制和两台变频器间的连锁控制,并给出了PC控制程序框图.实际运行结果表明:本系统安全可靠、故障率低、性能优于原直流系统.     

连铸小方坯的组织与性能研究

The hot cracking of the continuous casting bullit is connected with its macrostructure and mechanical property burnt. The macrostructure and the mechanical property of 0. 13 wt- %C continuous casting bullit was investigated. The results are as follows: 1) the classical representation of the casting bullit shows three distinct zones, a peripherial region of small equiaxed grains, a columnar zone, and a central equiaxed zone. The rapid increase of the under cooling layer thickness is the criterion of the transformation from the columnar zone to central equiaxed zone; 2) The hardness decreases with the reducing of the solidification speed; 3) The tensile strength decreases gradually from the peripherial equiaxed maximum principal strain zone to central equiaxed zone ,and increases with the drop of the temperature.     

Lattice Boltzmann方法模拟多孔介质Klinkenberg效应

格子Boltzmann数值模拟方法是研究复杂的多孔介质结构特别是Klinkenberg效应的有效方法之一，对处理复杂边值问题尤其有效，用格子Boltzmann方法研究了气流穿越多孔介质问题，并将数值计算结果与实验结果进行了比较，结果表明格子Boltzmann方法是数值模拟气流穿越多孔介质问题的有效方法之一。     

Stagnation flow on a cylinder with partial slip--an exact solution of the Navier-Stokes equations

The stagnation slip flow on an axially moving cylinder is studied.The Navier–Stokes and energy equations reduce to nonlinearordinary differential equations under a similarity transform.For large slip, the flow field decays exponentially into potentialflow. The heat transfer can be expressed as an incomplete gammafunction. In general, the heat transfer increases with slip,Prandtl number and Reynolds number.