油管漏磁探伤工艺与应用

简要介绍了漏磁探伤的基本原理及工艺流程与设备仪器，并对油管的常见损伤缺陷进行了分析。     

Heat transfer mechanism of a swirling impinging jet in a stagnation region

Heat transfer characteristics of a swirling impinging jet have been experimentally examined using a combined particle image velocimetry (PIV) and laser‐induced fluorescence (LIF) technique for simultaneous measurement of velocity and temperature fields. The present study shows that the radial width of the jet stretches with increasing swirl intensity, and that the stretching phenomenon contributes to the maximum local heat transfer coefficient. At the stagnation region, the flow near the heated surface is mixed intermittently by reverse flows toward upstream, and spatial distributions of temperature are correlated with instantaneous velocity vector maps. The dynamic behavior of recirculation zones, attributed to swirl number Sw and impinging distance, mainly determines the turbulent heat transfer at the stagnation region. © 2003 Wiley Periodicals, Inc. Heat Trans Asian Res, 32(8): 663–673, 2003; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/htj.10120     

初春施工技术要点探讨

论述了初春施工这个特定的施工季节所具有的特征，从气候、施工人员、工程情况及受冻土体等方面对初春施工易出现的问题进行了分析，对施工过程及施工技术规律性问题做了细化性研究和探讨。     

岩盐钻井水溶双井连通开采工艺的研究与推广

文章就全国井矿盐采区多年的开采工艺技术，进行了系统的研究与总结，并提出了岩盐钻井水溶开采双井连通的各种开采工艺及其关键技术，具有很强的适用性和推广价值。     

时空效应规律在软土深基坑工程中的运用

阐述了时空效应规律在软土深基坑工程中的运用情况，实践证明，运用时空效应规律，能可靠而合理地利用土体自身在基坑开挖过程中控制土体位移的潜力而达到保护环境的目的。     

泥土中微量六氯环戊二烯的气相色谱分析

采用SE 3 0为固定液进行色谱柱分离 ,用外标定量法测定泥土中的微量六氯环戊二烯 ,结果最小检知量为 0 .18× 10 - 6 ,相关系数为 0 .99992。     

Influence of numerical and viscous dissipation on shock wave reflections in supersonic steady flows

Numerical simulations are investigated to describe precisely the shock wave reflections in supersonic steady air flow field. The main objectives are to study the influence of the wedge trailing edge corner angle, of the numerical methods and of the viscous effects on the shock wave reflections and on the hysteresis behavior. The computations are done with different MUSCL-TVD finite volume schemes and the corresponding results are compared. The flow viscosity is also taken into account and comparisons are made between inviscid and viscous flow simulations. The results display the non-negligible influence of the numerical scheme accuracy on the results, mainly on the position and height of the Mach stem, and the relatively weak influence of the flow viscosity on these parameters. Comparisons between numerical results and experimental data have also been done and a good agreement is only observed for small wedge angles mainly due to the three-dimensional effects in the experimental setup.     

浅谈采用短木桩加土工网碎石垫层处理挡墙软基

结合工程实例，对采用传统的短木桩加新兴的土工合成材料——土工网及碎石垫层构成复合基础，处理河岸挡墙软基进行探讨，该方法在软土层厚度不超过4．0m的条件下，技术可靠，施工简单，工期短，造价低。     

变压器有载合闸过程中故障分闸后铁心剩磁分析

通过有载合闸变压器模型,分析了变压器有载合闸过程中由于副边突然短路导致主保护动作时电流和磁通的暂态过程,并对变压器铁心内的剩磁作了定性的分析。     

高纯超细氧化铝的制备

介绍一种利用氧化铝生产过程的中间物料———铝酸钠溶液 ,生产高纯超细氧化铝的方法 ,即利用钡盐净化铝酸钠溶液 ,得到A/S >10 0 0 0的精制溶液 ,再进行种分分解 ,得到超细Al(OH) 3 ,经过酸洗 ,最终得到纯度达 99 99% ,粒度 90 %小于 2 μm高纯超细氧化铝。