内流

Based on the review on the gas-particle two-phase models, the merits and drawbacks of various models were compared and analyzed. According to the characteristics of swirl-flow melting furnace, suitable gas turbulence model, gas-particle two-phase flow model and discrete phase model were chosen.

本文在总结气固两相流计算模型的基础上，结合旋风熔融炉内气固两相流的特点，分析对比了各类模型的优缺点，选择了适合于本文所研究的旋风熔融炉的气相湍流模型、气固两相流模型以及颗粒相的运动轨迹模型，并对旋风熔融炉内颗粒的受力进行了分析。

The main achievements include as follows:(1)With research results of hydraulic jump and impinging jet,flow patterns in stilling basin and plunge pool are analyzed in detail, the distributing characteristics of mean pressure and fluctuating pressure are investigated.

主要成果包括：(1)引用水跃和冲击射流的研究成果，详细分析了底流和挑跌流消力塘内的水流流态特征，探讨了这两种型式消力塘内时均压力和脉动压力的分布规律。

Results show that there is much local secondary flow in square cyclone besides main vortex, such as spiral down-stream near surface and spiral up-steam at central zone.

结果表明：方形分离器内除外涡旋与内涡旋等主流外，还存在许多局部的二次流，这些二次流是影响分离器的分离效率的主要因素之一；结构参数的变化对二次流的强度及位置产生影响，进而影响分离器的分离效率。

Results show that there is much local secondary flow in square cyclone besides main vortex, such as spiral down-stream near surface and spiral up-steam at central zone. The secondary flow is one of the effect factors on the collection performance of square cyclone. The cyclone geometry size affects on the intensity and the position of the secondary flow, and then affects on the separation efficiency of the cyclone.

结果表明：方形分离器内除外涡旋与内涡旋等主流外，还存在许多局部的二次流，这些二次流是影响分离器的分离效率的主要因素之一；结构参数的变化对二次流的强度及位置产生影响，进而影响分离器的分离效率。

As to the visualization study, the emergence of great deal of bubbles is observed when the wall superheat is low.

可视化研究发现低的壁面过热度时，有大量气泡产生；在本实验范围内，微槽内沸腾的流型主要有塞状流和环状流两种。

The research contents and main conclusions are as follows:1. The present thesis adopted one-dimension interior ballistic model, regarding the ballistic spatial core as the unsteady quasi one-dimension airflow containing the friction and heat exchange between airflow and tube wall, considering the boundary layer unsteady, nonstationary condensable current; and employed the MacCormack finite difference method to write the program.

本文的研究内容及结论主要体现在以下几个方面： 1、采用了一维内弹道模型，把弹后空间的核心流部分考虑为包含气流与身管管壁发生摩擦和热交换的不稳定准一维流，边界层考虑为不稳定、非定常可压缩流，用MacCormack有限差分方法求解，编制程序进行计算，较为准确的得到了复合材料身管固壁瞬态温度场分析内边界条件所需的气流温度和对流换热系数结果。

A mathematical model was developed to investigate the molten steel flow and decarburization process in RH vacuum degasser system under the action of electromagnetic field.

为了了解旋转磁场下真空精炼装置内的脱碳反应，对RH装置内钢液流场与脱碳过程进行了耦合计算；采用修正的均相流模型计算流场，避免了先前的一些不具推广性的方法，如简化计算区域或者预先规定含气率分布等。

Based on theories of multiphase fluid mechanics and mine ventilation theories,the model of drivage tunnel was established by using the method of similar experiment,the characteristics of ventilating current and gas concentration distribution in drivage tunnel were studied by the experiment,and based on the above characteristics the flow characteristics of gas transportation multiphase flow field were majorly analyzed.

基于多相流及矿井通风理论，利用相似性实验方法，搭建了煤矿掘进巷道模型，并通过模型实验获得了掘进巷道内风流流场和瓦斯浓度分布场的特征信息。结合上述两方面的特征信息重点分析了巷道内瓦斯运移多相流场的流动特性，所采用方法对于矿井通风系统及瓦斯监测系统的设计具有较强指导意义。

Results:There were no abdominal pain and fever,jaundice faded away gradually postoperation.Biliary drainage was 300ml-1000ml/d more or less.Colour of bile changed into normal by degrees.Intra peritoneal drainage was open and the colour was light bloody.Amount of drainage dropped off day after day.Whole blood cell test, serum glutamic pyruvic transaminase,serum glutamic oxalacetic transarninase,total serum protein,serum albumin and serum globulin returned to normal in first week postoperation.Serum bilirubin,serum glutamyltranspetidase and serum alkaline phosphatase declined gradually in first week postoperation.T-tube was clipped at twelfth day postoperation.T-tube Cholangiography was clear at 24~ day postoperation.

结果：术后无上腹部绞痛、高热，黄疸逐渐减退，每日引流胆汁300ml-1000ml不等，由淡黄色混浊、内有胆泥过渡到金黄色清亮的正常胆汁，腹腔引流通畅，引流液为淡红色，量从最初的200ml迅速过渡到10ml，血常规、血清谷丙转氨酶、谷草转氨酶、总蛋白、白蛋白、球蛋白等1周内均恢复正常，血清总胆红素、直接胆红素、间接胆红素、谷氨酰转肽酶、碱性磷酸酶逐渐下降，术后12d夹闭T管，术后24d T管造影提示左、右肝管及胆总管下端通畅，无狭窄。

Main advances of research on vortices in pump sumps;2. Based on flow field analysis,it shows that owing to the wakes behind the upstream suction pipe,the downstream flow becomes more turbulent and appears with obvious free-surface vortices and submerged vortices in complicated movement.

本文在玻璃水槽内对不同管间距条件下的吸水管周围进行了大量的PIV流场量测实验，通过流场分析显示，上游吸水管的尾流作用加剧了下游吸水口的水流紊动强度，流场多处出现表面旋涡和水内旋涡，其运动形态复杂多变。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新