流体力学

In order to find which hand-figures could provide higher propulsive efficiency for swim ming,two different 3D unstructured grid models of a native woman swim mer s hand and forearm were generated based on two hand-figures-fingers splaying and fingers holding together.

针对采用何种手形游泳能产生较高的推进效率，运用计算流体力学(CFD，Computational Fluid Dynamics)方法，建立了国内某女运动员手掌和前臂在五指并拢和五指分开两种手形的三维非结构网格模型；计算了90°攻角划水时两种不同手形的手掌和前臂在不同来流速度下的推进阻力、推进升力及其系数值，依据计算结果对手周围的流场进行了分析，研究了不同手形对游泳推进效率的影响。

The change of aerodynamic characteristics caused by different wheel spokes is discussed on the basis of a comparison of numerical simulation and experiment.

应用计算流体力学的方法，对具有不同辐板的车轮外流场进行了数值模拟，并与试验相对照，讨论不同的车轮辐板所引起的气动特性的变化。

For this reason, a novel PPOP was designed and prepared using two side drilling technology and water-insoluble drug gliclazide was employed as model drug. Influencing factors from six aspects were studied which was drug layer formulation, push layer formulation, coating formulation, orifice properties, tableting art and dissolution conditions, respectively, and the difference between the dissolution profiles of novel PPOP and conventional PPOP was also evaluated by similarity factor (f_2). Through determination of the viscosity of drug layer and push layer of the novel PPOP, the mechanism of drug release from novel PPOP was discussed by the help of Poiseuilles law of laminar flow.

因此，本文以难溶性的格列齐特为模型药物，在传统型推拉式渗透泵的基础上，设计并制备了双面打孔型推拉式渗透泵；通过单因素研究从含药层处方、助推层处方、衣膜处方、释药孔性质、压片工艺以及体外释药条件六个方面，对影响双面打孔格列齐特推拉式渗透泵片释药行为的因素进行了详细的考察，同时，应用相似因子法对以上各种因素下双面打孔型推拉式渗透泵和传统型推拉式渗透泵释药特点的异同进行了系统的研究；在此基础上，通过对双面打孔型推拉式渗透泵含药层和助推层黏度的测定，结合流体力学中的Poiseuille层流定律方程，对双面打孔格列齐特推拉式渗透泵片的释药机理进行了较为深入的探讨。

For this reason, a novel PPOP was designed and prepared using two side drilling technology and water-insoluble drug gliclazide was employed as model drug. Influencing factors from six aspects were studied which was drug layer formulation, push layer formulation, coating formulation, orifice properties, tableting art and dissolution conditions, respectively, and the difference between the dissolution profiles of novel PPOP and conventional PPOP was also evaluated by similarity factor (f2). Through determination of the viscosity of drug layer and push layer of the novel PPOP, the mechanism of drug release from novel PPOP was discussed by the help of Poiseuille's law of laminar flow.

因此，本文以难溶性的格列齐特为模型药物，在传统型推拉式渗透泵的基础上，设计并制备了双面打孔型推拉式渗透泵；通过单因素研究从含药层处方、助推层处方、衣膜处方、释药孔性质、压片工艺以及体外释药条件六个方面，对影响双面打孔格列齐特推拉式渗透泵片释药行为的因素进行了详细的考察，同时，应用相似因子法对以上各种因素下双面打孔型推拉式渗透泵和传统型推拉式渗透泵释药特点的异同进行了系统的研究；在此基础上，通·药学论文过对双面打孔型推拉式渗透泵含药层和助推层黏度的测定，结合流体力学中的Poiseuille层流定律方程，对双面打孔格列齐特推拉式渗透泵片的释药机理进行了较为深入的探讨。

For this reason, a novel PPOP was designed and prepared using two side drilling technology and water-insoluble drug gliclazide was employed as model drug. Influencing factors from six aspects were studied which was drug layer formulation, push layer formulation, coating formulation, orifice properties, tableting art and dissolution conditions, respectively, and the difference between the dissolution profiles of novel PPOP and conventional PPOP was also evaluated by similarity factor (f2). Through determination of the viscosity of drug layer and push layer of the novel PPOP, the mechanism of drug release from novel PPOP was discussed by the help of Poiseuille's law of laminar flow.

因此，本文以难溶性的格列齐特为模型药物，在传统型推拉式渗透泵的基础上，设计并制备了双面打孔型推拉式渗透泵；通过单因素研究从含药层处方、助推层处方、衣膜处方、释药孔性质、压片工艺以及体外释药条件六个方面，对影响双面打孔格列齐特推拉式渗透泵片释药行为的因素进行了详细的考察，同时，应用相似因子法对以上各种因素下双面打孔型推拉式渗透泵和传统型推拉式渗透泵释药特点的异同进行了系统的研究；在此基础上，通过对双面打孔型推拉式渗透泵含药层和助推层黏度的测定，结合流体力学中的Poiseuille层流定律方程，对双面打孔格列齐特推拉式渗透泵片的释药机理进行了较为深入的探讨。

A systematic study on the crystallization process of ammonium sulphate has been performed in this thesis. Computational Fluid Dynamics simulations and optimization of the crystallizers have been carried out in conjunction with multi-phase model.

本文对硫酸铵结晶工艺进行了系统的研究，并在此基础上，运用计算流体力学方法，对硫酸铵结晶器进行了模拟和优化，并对硫酸铵结晶过程进行了多相模拟。

Based on the basic theroy of fluid dynamics, this paper establishes a model of flow mechanics for turbulent flow, then uses this model to carry on a numerical simulation study on the conventional auger drill stabilizer annular flow field.

基于流体力学基本理论，本文建立了一套钻柱稳定器湍流模式力学模型，并采用该模型，对气体钻井常规螺旋钻柱稳定器环空流场进行了数值模拟研究。

With the help of modern computational fluid dynamics tecnology, this thesis carries on a numerical simulation of annulus multiphase flow of the conventional auger drill stabilizer; it points out the deficiency of the annulus gas in cutting-carrying and lifting; and attempts to develop a drill stabilizer that are suitable for the gas drilling.

本文试图借助现代计算流体力学技术，对常规螺旋钻柱稳定器环空多相流动规律进行数值模拟研究，指出在环空气体携岩举升方面存在的不足，开发一套适合于气体钻井的新型钻柱稳定器，提出全井段环空流场改善方法，实现气体钻井防斜打快，减少冲蚀，提高井眼净化能力的目的。

The flow status of liquid metal in the sand box of group casting was discussed according to the fluid mechanics and heat transfer theory. Not only does the appearance of vying liquid metal happen when group casting between the big and small castings, identical castings in the multiple gates system appear too, even one casting.

运用流体力学、传热学原理，分析群铸时液态金属在各型腔内的流动情况，揭示出争铁液现象不仅在大小件混铸时发生，在多个内浇道浇注系统中群铸相同铸件，甚至仅一个铸件仍存在这一现象。

Based on Computational fluid dynamics, the problem on transient aerodynamic characteristics of sedan and coach crossing each other on road was researched by adopting technology of sliding interface and moving mesh.

应用计算流体力学数值模拟方法，采用滑动交界面和动网格技术，对开阔路面下轿车大客车会车过程的瞬态流动进行气动特性研究。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。