The research and development course of using purely automatic fluid corundum mould material inside the fluid-roasting furnace at 1 600 ℃ is intraduced.
介绍了1 600℃流态化焙烧炉内衬使用的高纯自流刚玉浇注料的研制开发过程,重点讨论了活性α-氧化铝微粉的种类及加入量、结合剂的优选及其它相关问题对浇注料性能的影响。
Preliminary simulation of flow patterns in single fissure-cavern system;
单缝洞系统内部流态的初步模拟研究
Experiment on improving flow pattern of diversion canal of Jiangdu pumping station;
江都抽水站引河流态改善的模型试验
Preliminary study on flow pattern determinant method of shallow flow on slope surface;
坡面薄层水流流态判定方法的初步探讨
The flow regime, sediment deposition and the loss of head of two head tanks of the sewage pumping station with different dimensions are studied by using a hydraulic model test method.
采用水力模拟的方法对两个不同结构尺寸的污水泵站高位井的水流流态、泥沙淤积及水头损失等进行了模型试验。
The hydraulic test of the sand tank model showed that (1) several kinds of flow regimes are presented in the horizontal well pipe during the horizontal well pumping, such as transient region of laminar flow, hydraulic smooth region,.
利用自制的水平井砂槽模型,进行了一系列不同流量条件下的水平井抽水试验,结果表明:(1)在不同出流条件下,水平井井管中可以同时出现层流-粗糙紊流多种不同流态;(2)水平井出流条件下,井管中的水头损失既不能忽略,也不服从线性变化规律。
Through the hydraulic model test,the feasibility of design scheme was demonstrated,and systematic research on flow regime and distribution of flow velocity under floodgate,disappear work downstream the dam were studied,and layout of whole pivot and physical dimension were optimized.
通过水工模型试验,论证方案的可行性,对闸下水流流态、流速分布、坝下消能进行了系统研究。
The structure and melt flow reynolds number of nozzle c avity's melt in normal cas ting and th in-gauge high-speed casting were analysed for influencing law of flow state.
以两种常用铸咀型腔熔体流动为研究对象,分析了在常规铸轧和超薄快速铸轧时,铸咀型腔的熔体速度、型腔结构、熔体流动雷诺数的变化对铝熔体流态的影响规律,并得出结论:无论是常规铸轧还是超薄快速铸轧,铸咀型腔体流动都存在不同强度的紊流区域,但是在铸咀出口处为准层流。
The water surface cross circulation and redistribution of velocity in channel bends were summarized;and the effects of spur-dikes on flow state were analyzed.
采用三维声学多普勒流速仪对弯道内有、无丁坝两种工况下的水流特性进行了系统的试验研究,总结了弯道水流水面横比降、横向环流、流速重分布等特性,重点分析了丁坝对弯道水流流态的影响,进一步证实了丁坝的护岸机理,为相关的工程实践提供理论依据。
The results showed that as following:draining hole is critical flow under the condition of free outlet; draining flow state is rested at the ratio of downstream water depth (ht) with critical water depth (h1k) of draining hole, for drowned flow, for critical flow, for free flow.
依据水力学基本理论对涵洞泄水孔出流特性进行研究,得出以下结论:自由出流条件下,出口水流为临界流;泄水流态取决于泄水孔下游水深(ht)与泄水孔临界水深(h1k)的比值,ht/h1k>1。