用科学发展观引领边疆高职教育科学发展——以西双版纳职业技术学院为例

以西双版纳职业技术学院为个案，分析边疆少数民族地区高职教育的发展实际，就“边疆高职教育的科学发展”这一论题作理论联系实际的论证，结论是：要实现边疆少数民族地区高职教育的科学发展，必须坚持把发展作为办学第一要务，彰显人在发展中的核心地位，注重发展的全面协调可持续性，把握统筹兼顾的根本方法加快发展。     

循环流化床锅炉的临界流化风量的测定技术分析

介绍了循环流化床锅炉临界流化风速的概念及其在锅炉冷态调试时的测定方法，利用厄贡准则式和浙江大学提出的计算式计算了宽筛分颗粒的冷热态临界流化风速的比值，分析了冷态临界流化风量与热态运行时风量的关系，指出二者基本相当时才能保证热态运行时床料良好流化。     

基于Metasys系统车间空调机组自动化

为了实现我厂空调系统节能降耗、方便管理、达到工艺要求、提高经济效益等目标,我们选用Johnson Controls(美国江森自控)之Metasys系统对厂区车间的空调进行自控设计。     

On-line heat flux identification from a rotating disk at variable speed

This paper presents the Branch Eigenmodes Reduction Method (BERM) applied to the identification of a heat flux in an advection–diffusion model, with time dependent parameters. The treated application is a 2D disc brake whose velocity and thermal solicitations are time dependent. One of the method’s strength lies in its ability to greatly reduce the dimension of the numerical problem, while maintaining a satisfying precision on the entire computation domain. In the considered case, the inverse problem difficulties come from the transport phenomena which requires the use of very small time steps for its numerical resolution. In order comply with the on-line identification objective, a filtering technique is used.     

Stress evolution with time and space during mining of a coal seam

Mining of the upper protective coal seam is widely practiced in China for coal mine safety, but relief gas may present a new risk of blasting. To control the relief gas effectively, a strain-soften model was built by FLAC^3D software to investigate the stress evolution during the process of mining the upper protective coal seam. The results show that the abutment stress changes rapidly within 10 m in front of the coal face, and the maximum abutment stress is approximately twice the original when the coal seam is mined 20–30 m. The abutment stress should break the rock mass and cause the gas to flow easily. In the stable mining period, the change trends of the x-stress and z-stress are different, and these should also pre-break the rock mass. The stress distributions of the rock mass at different distances under the protective coal seam are different, especially near the coal face, which should greatly affect the gas flow when the space of the protective and protected coal seams change over a large range. The relief angle also changes over a large range, increasing to a maximum approximately 30 m behind the coal face, and it decreases gradually when it is far away from the protective coal seam. The results are helpful for designing the coal face of protected coal seams and borehole layouts to control the relief gas.     

核电站辅助过滤器壳体设计

以开发出适合我国压水堆核电站的辅助过滤器来代替进口产品为背景，以核电站蒸汽发生器排污系统中过滤器壳体为设计对象，按照常规设计法，遵循GB150．2011，对过滤器壳体依次进行了筒体、封头、进出水接管及壳体开孔补强和法兰密封设计。最后将所设计的壳体导入有限元分析软件ANSYS11．0进行强度验证，结果表明其强度满足要求。