高职旅游英语专业英语课程设置与人才培养

以ESP理论为指导,从旅游英语专业学生的学习需求及用人单位的人才规格需求出发,通过对高职旅游英语专业学生及用人单位设计的问卷访谈分析,解读旅游英语专业英语课程设置与人才培养的关系。     

中国传统建筑研究的文化学认识

分析中国传统建筑文化的特点及继承的局限性,认为中国传统建筑是中国独特的思维方式和文化拉物,提出只有运用文化学的方法才能挖掘出其精髓。     

奔驰E320轿车雨刮器结构原理分析

对奔驰E320轿车雨刮器进行了运动分析。在雨刮器传动机构设计中,利用交叉连杆机构能解决雨刮器往复运动中摆角的设计问题,利用曲柄连杆机构可实现在不增大雨刮器尺寸的前提下增大雨刮器擦拭视角。     

3-D temperature distribution of a full size BF copper stave with oblate channel

An experiment of a new type full size copper stave for a real blast furnace was carried out in a special-designed experimental system. The 3-D temperature distribution inside the stave including isotherm was obtained based on the experiment data. And the effects of the temperature of cooling water and the velocity of the water as well as the temperature of the furnace on the 3-D temperature distribution were obtained. The experimental and calculation results show that the highest temperature of the hot surface is lower than 90℃ which is very good for the solidified slag formation on the hot surface and protecting the stave.     

Semi-solid slurry preparation and rolling of 1Cr18Ni9Ti stainless steel

The preparation and rolling of the semi-solid slurry 1Cr18Ni9Ti stainless steel were researched. The experimental results show that when stirred for 2-3 min under the given test condition, the semi-solid slurry with about 50%-60% (volume fraction) solid and the spherical primary austenitic grains in the size of 100-200μm can be obtained, and it is easy to be discharged from the bottom little hole of the stirring chamber. The semi-solid slurry of 1Cr18Ni9Ti stainless steel can be rolled into the given plate successfully. However, the solid phase and liquid phase are easily separated in the rolling process, so that the solid primary austenitic grains are concentrated in the center and the liquid phase is near the edge of the rolled plate. The strengths of the plate rolled in the semi-solid state are higher than that of the traditionally repeated hot-rolled plate of 1Cr18Ni9Ti stainless steel.     

关于网络课堂的构建

优化教学手段、改善教学技术是保持高校设计艺术教育先进性的体现。利用网络实现课堂教学的互补也是新时期对教师提出的一项要求。本文介绍了构筑在“你我家”网络真实社区（http：／／www．niwojia．com）平台上的专业合作，交流组织“艺术设计联盟”（http：／／design．niwojia．com）的形成背景、发展历程和主要特点。     

进水口前立轴旋涡的数值模拟及消涡措施分析

原设计方案试验发现溢洪道进口产生串通旋涡,为消除有害旋涡,在环形堰口对称布置3个防涡墩,结果表明消涡效果良好,可有效降低堰上水位,增大流量系数。采用RNG k-ε紊流模型对有无防涡墩两种情况进行模拟,再现了漏斗状吸气旋涡,计算结果与测量数据吻合良好,验证了旋涡模拟的可行性。从环量的角度分析了防涡墩的消涡作用,发现旋涡的形成存在一个环量随时间递增的过程,而防涡墩的设置可大幅度减小水流环量。对旋涡稳定时水面环量和涡量的变化规律也进行了分析,随着半径的增大,环量相应增大,涡量则减小。     

Al-Si相变材料与金属容器的相容性及防护涂层的研究

铝硅合金是优异的金属相变储能材料,但其对盛装用的容器材料具有较强的腐蚀性.本实验通过筛选,使用0Cr25Ni20不锈钢作为容器材料的基材,在长时间处于495~620℃高温反复循环的条件下讨论其抗腐蚀性.为了进一步减缓腐蚀,自配了分别以石墨粉、TiB2、有机硅树脂为主要成分的3种高温涂料.实验结果表明,涂料可以有效地抑制储能材料中微量元素的成分在容器材料中的扩散,减缓熔融铝硅介质对容器材料的侵蚀.     

Feasibility analysis for monitoring fatigue crack in hydraulic turbine blades using acoustic emission technique

In order to investigate the feasibility of monitoring the fatigue cracks in turbine blades using acoustic emission (AE) technique, the AE characteristics of fatigue crack growth were studied in the laboratory. And the characteristics were compared with those of background noise received from a real hydraulic turbine unit. It is found that the AE parameters such as the energy and duration can qualitatively describe the fatigue state of the blades. The correlations of crack propagation rates and acoustic emission count rates vs stress intensity factor (SIF) range are also obtained. At the same time, for the specimens of 20SiMn under the given testing conditions, it is noted that the rise time and duration of events emitted from the fatigue process are lower than those from the background noise; amplitude range is 49–74 dB, which is lower than that of the noise (90–99 dB); frequency range of main energy of crack signals is higher than 60 kHz while that in the noise is lower than 55 kHz. Thus, it is possible to extract the useful crack signals from the noise through appropriate signal processing methods and to represent the crack status of blade materials by AE parameters. As a result, it is feasible to monitor the safety of runners using AE technique. Foundation item: Project(50465002) supported by the National Natural Science Foundation of China     

缩放管内CaCO_3污垢形成过程的数值模拟

利用从传热传质角度结合表面化学反应知识模拟CaCO3污垢形成过程的数学模型,对缩放管不同工况进行了数值模拟计算.得出不同工况下,缩放管内CaCO3污垢的沉积率、剥蚀率、污垢热阻随时间的变化规律以及它们与流速、工质浓度、温差的关系.