内流的

The air motion in umbrella curtain spray combustion system for diesel engine was studied using numerical analysis with the emphasis on the evolution of in-cylinder flow field, the interactions between swirl and squish and the effects of combustion chamber configuration.

用数值分析方法研究柴油机伞帘喷雾燃烧系统中的空气运动规律，探讨了缸内流场的演变过程、涡流与挤流的相互作用和燃烧室结构的影响，并比较了该燃烧系统与原机燃烧系统中的流场。

Through the cold-state and simulation result, the special flow field of the burner can be obtained. It would be adjusting well when primary air nozzle adopting this form of inner-straight and outer-swirling. Inner straight can assure enough distance of jet, outer-swirling can entrain enough high temperature flue gas to burst into flame easily.

从冷态试验和数值模拟两方面可以得出这种燃烧器具有特殊的流场分布，一次风喷口采用这种外旋流内直流形式，兼有直流和旋流的两种特性，且具有很好的调节作用。

In order to resolve this problem,an effective conversion of fitted-body coordinate has been used in numerical simulations of flow field within a facture of layered medium ,resulting in a successful transformation of 2D flow-field calculation within a fracture from a complex physics domain to a regular calculation domain.

为了有效地攻克这一技术难关，在层状介质缝内流场数值模拟中，采用了有效的贴体坐标变换，成功地将二维缝内流场计算从复杂的物理域转换到规则的计算域，从而为我国全三维水力压裂数值模拟软件的开发和应用提供了良好的理论基础和新的思路。

According to analysis of flow field and velocity distribution in the mix tank,the results indicate that:using draft-tube in the mix tank,the axial flowing of liquid can be increased,the circumgyration around the impeller will be improved,and the strong mixed effect can be gained.

通过对有、无导流筒的搅拌槽内流场和速度的对比分析表明：导流筒强化了搅拌槽内上下液体的整体轴向流动，在近浆区域改善了液体的跟转，有强烈的混合效果，并且，在较为理想的流场分布下，有导流筒的搅拌槽功率消耗比无导流筒搅拌槽节省12%，其结果将为搅拌槽的整体结构优化提供有效途径。

We introduced improved primary mixed glial culture and different-attachment method to isolate and purify the OPCs, the cells were proliferated in serum-free medium, flow cytometry and immunohischemistry methods were employed to estimate the purity of cultured OPCs. Their abilities of differentiation and expression of trophic factors were identified by RT-PCR and immunostaining. Several methods including TUNEL and MTT were adopted to estimate the protective effects of conditioned culture medium from oligodendrocyte lineage cells on the primary cultured cerebellar granule neurons. Intravitreal transplant of OPCs, combined with retrograde fluorescent labeling the superior colliculus and intraorbital optic nerve transection, were used to investigate the protective effects of OPCs on the axotomized RGCs in vivo. Intravitreal transplantof OPCs or NSCs on the newborn rats, and retinal transplant of OPCs on the young rats were performed, to observe the myelin formation in the retina at different stages after cellular transplantation. Optic nerve transection was carried out on some rats with myelinated retinae, to study the influence of myelination on the injuried RGCs.

为此，本研究采用改良的胶质细胞混合培养与差速贴壁方法获得大鼠OPCs，使用无血清培养基进行扩增、培养，用免疫组织化学和流式细胞技术对培养细胞的纯度进行鉴定，对少突胶质系细胞表达部分营养因子的情况进行检测；采用TUNEL、MTT等方法对少突胶质系细胞条件培养基对原代培养小脑颗粒神经元的保护作用进行检测；将OPCs移植入成年SD大鼠玻璃体内，利用上丘逆行荧光标记技术，观察眼内移植的OPCs对眶内视神经切断时的视网膜神经节细胞的保护作用及其持续时间；将OPCs或NSCs移植入新生和幼年SD大鼠玻璃体或视网膜内，观察不同时期视网膜内髓鞘形成与分布特点，分析髓鞘的超微结构，并观察眼内髓鞘形成对损伤神经节细胞的保护作用。

The effects of longshore currents,Stokes mass transport by waves,large scale eddies and the instability of longshore currents on the transport of pollutant in a surf zone are discussed based on the experimental results.

实验表明，在破碎带外污染物主要受波浪非线性引起的质量输移流的影响；在破碎带内主要受沿岸流的影响，同时还受沿岸流不稳定运动及大尺度旋涡运动的影响。

In order to investigate the basic heat transfer characteristics of the platelet regeneratively cooled thrust chamber, the second chapter focussed on the developed flow and heat transfer in the long straight regenerative cooling channels with rectangular sections.

为了解层板再生冷却推力室在传热上的基本特征，第二章重点研究流动和热充分发展的矩形截面长、直再生冷却通道内的传热问题，建立了层板再生冷却推力室二维流固耦合传热过程的数理模型，采用通用形式控制方程描述冷却剂紊流传热和通道材料内导热的共轭传热问题，从而避免了流-固区域之间的反复迭代，大大缩短了计算时间。

This paper has mainly analysedvertical oblique flow circulating pump operation properties. Through monistic flowdesign theory, carried out preliminarily design for impeller, and completedthree-dimensional model analysis through CAD software. With the aid of CFD-FLUENTsoftware platform, have carried out value for flowing imitation in pump, the SIMPLECmethod on unstructural grid has realized pressure the couple of speed, which verified theresult of preliminary design.

本文主要分析了立式斜流循环水泵运行特性，通过一元流设计理论，对叶轮进行初步设计，并通过 CAD 软件进行立体三维模型分析，借助 CFD-FLUENT 软件平台，对水泵内流场进行了数值模拟，利用非结构网格上的 SIMPLEC 方法实现压力-速度的耦合，对初步设计进行计算结果的验证。

Based on forerunner's calculation of resistance pressure drop of two-phase flow, the paper utilized the method of combining horizontal straight tube resistance equation and crankled tube resistance equation to get the velocity of the two-phase flow and solid concentration,According to this thought, experiments were held to validate the idea if it can wok .

本文在应用前人关于管道气固两相流动阻力计算实践的基础上，利用直管段和弯管段的阻力压降计算式联立求解，得到管道内气固两相流的流速和固相浓度的计算式，在此基础上，进行了试验，通过在气固两相流试验台上试验及数值模拟计算，表明该法在线检测气固两相流固相浓度和流动速度是可行的，具有方法简单、非侵入、响应速度快等优点，具有很好的工程应用价值。

Methods For example simulated habitation cabin on ground, the air flow field distribution of habitation cabin was supplied through 2 modes, step air supply channel and perforated plate, and was analyzed with digital simulation and experiment. In addition, effect of inter-module flow on flow field was studied.

以某地面模拟居住舱为例，采用实验和数值模拟的方法给出梯形送风管道及孔板进风支管出流两种方案下居住舱的流场分布，并预测了舱段间回风对舱内流场的影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。