模型工

It bases on engineering thermal calculation, uses the extensive applicable formularies, sufficiently considers the characteristics of working substances and system components in variation work conditions, uses more exactly sectionalize fitting equations.

本仿真模型建立在工程热力计算方法的基础上，采用工程中广泛应用的计算公式；充分考虑在变工况时各种工质物性和系统部件特性的变化，采用更精确的分段拟合公式。

To all project practicality, the introduction is given to the operational characteristics, the methods for calculation and the researching actuality of the tail tunnels with sloping ceiling underground hydropower stations the Three Gorges. This paper has discussed in detail the characteristic method being the same with the compressive flow and the Priessmann solution being the same with the free-surface-pressure flow. And how to deal with boundary conditions has been expatiated. Also hydraulic transient process of tremendous load fluctuation in the tail tunnels with sloping ceiling has been numerical simulated and the Fortran program for numerical simulation has been given. The paper gain the maximal press for tail end of the shell, the maximal rising rate of rotational speed of generating set, the maximal vacuum degree for inlet of the tail tunnels and so on under 11 kinds conditions of tremendous load fluctuation. These conditions include the design conditions, the check conditions and the superposition conditions. Finally, the computing results have been analyzed and summarized. The end chapter is the general comment of the whole-length content and the describing of the intending view of researching.

本文以三峡右岸地下电站尾水洞设计为背景，从工程实际出发，阐述了变顶高尾水洞的工作特性、使用范围及其研究现状；详细论述了适用有压流的特征线法、适用明满交替流的普里斯曼解法等数学模型；边界条件的给定和明满交替流的计算方法；用Fonran语言编制了数值计算程序，对三峡右岸地下电站变顶高尾水洞的大波动工况进行了数值模拟，分别得出了在设计工况、校核工况和叠加工况下蜗壳末端最大压力上升值、机组最大转速上升值和尾水管进口最大真空度等重要参数；对数值计算结果进行了详细分析并得出了有价值的结论；最后展望了今后水电站变顶高尾水洞的研究方向。

According to the full model of the whole process obtained through simulation, this paper emulated varied cases and analyzed sensitivities under the different feed flow, H_2S content, shifted gas/unshifted gas ratio, liquid/vapour ratio, N_2 flow used to stripping, H_2O concentrate in loan methanol, and calculated hydraulics of every columns.

根据模拟得到的整个工艺流程的完整模型，本文对变工况条件进行了仿真计算，对处理原料气负荷、进口原料气H_2S含量、变换气与未变换气负荷比、液气比、气提N_2量、贫甲醇水份的变化进行了工况研究与敏感性分析，并对各塔进行了水力学模拟计算分析。

By introducing the mixing rule, only molecular weight and acentric factor and critic parameters of each components are required as input.

该模型通过引入混合规则，仅需输入混合工质各组分的分子量、偏心因子和临界参数即可预测混合工质的粘度和导热系数。

Compared with model experiment data of the Jilintai hydropower station, a two-dimensional numerical model is developed to simulate the flow filed in energy dissipater in non-pressure tunnel by using the volume of flow method and RNG k-εtwo equations turbulent model.

本文结合喀什河吉林台一级水电站引水深孔无压隧洞洞内消能工进行的水工及水力学模型试验，对无压隧洞洞内消能工进行了全面深入的研究。

In this thesis, firstly, some main models have been checked on their accuracy, and the reliability of MACORS code has been verified by the RELAP5/MOD2 code on five transient conditions for QSNP: loss of flow; loss of offsite power; incontrollable control rod withdrawal; the feed-water temperature increasing and the feed-water lost. The results obtained are very satisfactory. Secondly, MACORS is used to calculate the operating and accident transients for QSNP, and the analysis results are significant to real engineering. And finally for MNRS, MACORS is used to simulate the steady-state natural circulation heat-removed capacity and the transient behaviors from forced circulation to natural circulation. Some important conclusions are obtained by the analysis results.

本论文首先从各方面对核动力系统中最主要的、热工水力特性最复杂的反应堆和蒸汽发生器进行单独验证和理论分析，其次分别利用RELAP5/MOD2程序和MACORS程序对秦山核电站的双环路失流、全厂断电、反应性事故引入、主给水参数变化及丧失主给水五种瞬态工况进行了计算，结果符合很好，从而证明了本程序模型的准确合理性，选择数值方法的有效性和编制程序的正确性；尔后，利用MACORS程序对秦山核电站的多种运行及事故瞬态进行了分析，得出了具有工程价值的结论；对船用核动力装置的稳态自然循环载热能力以及相应参数的特性、强迫循环与自然循环的过渡工况等进行了仿真分析，所得结论对我国核动力船舶的设计，运行以及安全审评具有重要的意义。

The non-structure grid is used for complex irregular boundary processing. An efficient algorithm PISO is used for the model and it can correct the bias of the mesh, so it can reduce iterative times. The flow pattern, energy dissipation ratio and velocity field are obtained.

根据不同的运行工况，利用计算流体力学软件FLUENT对无压隧洞洞内消能工的水流流态进行了二维简化数学模型的数值模拟，在求解过程中采用混合结构网格来处理复杂的边界形状；采用了效率较高PISO算法进行计算，在计算过程中进行了相邻校正和偏斜校正，减少了达到收敛所需的迭代次数。

The results show that live load layout for cross-section of the truss ribe based on the stress influence line is better than the conventional method.

结合传统方法，按两种方式进行活载布置，通过有限元的理论分析和模型试验结果的对比，结果表明在桁架段，按应力影响线布活载的工况为危险断面的最不利工况。

For this end, a dynamic model with many degrees of freedom is built on the basis of coach-bus made in China and a synthesis of various gaits.

以国产大客车为基础，综合多种工况建立多自由度动力学模型，并在MATLAB／Simulink环境下进行多种工况的仿真。以试验结果为依据，对仿真结果进行分析和验证。

The article is used finite yuan the method builds his to emulate analytic model, the construction of imitate bridge, study successive bridge bracket is irrigated build construction each operating mode, analyse what each operating mode issues bracket to be out of shape reach stability, ordinal come the design of bracket of test and verify is reliable, provide reference for bridge construction.

文章利用有限元方法建立其仿真分析模型，模拟桥梁的施工，探究连续梁支架浇筑施工各工况，分析各工况下支架的变形及稳定性，依次来验证支架的设计是否合理可靠，为桥梁施工提供参考。

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后，在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加，包括肾小球病和球外疾病等。