模拟

The displacement loading finite element method is used to simulate tunneling, and the analogue method and computation formula are also brought forward. Moreover, a reciprocal calculating program, DLFEA-TGM, is developed. The tunneling-induced ground movement and characteristic of stress variation are analyzed.

利用位移加载方法模拟隧道开挖，提出了模拟方法和计算公式，开发了相应的计算程序DLFEA—TGM，分析了隧道施工引起的地层位移及应力变化特点。

After the first analogue consoles, Lawo developed the hybrid PTR, analogue signal processing with digital control.

在起初的模拟调音台之后，朗沃采用模拟信号处理和数字控制技术开发了模数混合型调音台。

With the increasing of the system complexity, it is more difficult to get analytic relations between function parameter set P and macro parameter set B.

采用这种分层结构方法，系统可以在尽可能高的层次上传递故障信息，从而达到被模拟的部分最少、最大限度地压缩底层模拟时间的目的。

An anatomization on the relative analyzed results is also provided. It is found that the modeling results fit the water monitoring results well with efficiency value greater than 90% and multi-year average relative error value of 3.6%. The case study indicates that the runoff-evaporation hydrological model w...

在阿克苏河流域平原区1980-1995年逐月水量平衡研究中，模拟结果比较符合研究区水盐监测的结果，模型效率系数超过90%，多年平均相对误差仅为3 6%，证明模型在干旱区具备很好的模拟精度，在我国西北内陆干旱区绿洲有进一步应用的前景。

The research contents mainly include: First, the influence of foundation constraint condition to the temperature stress is analyzed, the temperature stress formula of ultra-long concrete anchor plate is deduced, then the influence of length to structure crack can be gotten from the formula. Second, a breathing method is set up to solve the problem of temperature stress in ultra-long concrete constructions. By setting the sliding floor, a breathing system is built up and the temperature stress reduced distinctly. Third, the effect of prestress technique in the control of temperature stress is analyzed, it is simulated and calculated through FEA to get the right way to apply the prestress. Forth, the delay of temperature field and unsteady conduction is considered, the temperature field of ultra-long concrete structure with later poured band is simulated, then temperature stress distribution after casting the concrete is calculated, finally the effect of later poured band to temperature stress of ultra-long structure is analyzed.

本文的研究内容主要包括：(1)分析了基础约束对超长混凝土结构温度应力的影响，推导了超长混凝土地基板温度应力公式，从而得出长度对结构裂缝的影响；(2)针对超长混凝土裂缝问题，提出了一种可呼吸的解决方法，通过设置滑动层，使结构成为一种"可呼吸"体系，从而有效的降低温度应力；(3)分析了预应力技术在控制超长结构温度应力中的作用，通过有限元模拟计算，得到合理的预应力施加方式；(4)考虑温度场的滞后效应及不稳定传导，对带后浇带超长混凝土结构浇注后的温度场仿真模拟，计算浇注后的温度应力分布，分析后浇带对超长结构温度应力的影响。

To validate the accuracy of the simulation results of numerical steady flow test bench, experiments in a steady flow test bench with the Ricardo anemoscope were taken. The compared results between computations and experiments suggest that the former is reliable.

为验证数值稳流气道试验台模拟计算的准确，在采用Ricardo风速仪的气道稳流试验台上进行了试验，两种方法下的流通系数和涡流比比较说明：模拟结果是可靠的。

In order to further understand the effect of deviation angle on the vertical resolution of the compensated neutron log, Monte Carlo simulation method was applied to study the vertical geometrical factors and formation sensitivity under different deviation angle conditions, furthermore the responses of the tool were simulated in laminations.

为了进一步认识井斜角对补偿中子测井纵向分辨率的影响，利用蒙特卡罗模拟方法，分析了在不同井斜角情况下测井仪器的纵向几何因子和地层灵敏度，并模拟了在薄地层中的仪器响应。

According to the special structure of the tilted fiber Bragg grating, the effect of the tilted angle θ on reflection spectrum of tilted fiber Bragg grating was studied by using the couplemode theory and transfer matrix.

根据倾斜光纤Bragg光栅的结构特点，利用耦合模原理，运用传输矩阵法，模拟分析了倾斜角度对光纤Bragg光栅反射特性的影响，并用实验对模拟结果进行了验证。

For the radiation transfer equation, both the spatial domain and the angular domain is discretized, and the finite volume method is used to solve the equation in an explicit way.

把一种新的三维热辐射计算方法应用到高超声速非平衡流场的数值模拟过程中：在非结构网格上对高超声速化学非平衡流场的数值模拟过程中，耦合了辐射输运方程来求解辐射热流。

The CFD method was applied to calculate and simulate the form and action process of the cavitation at the representative character of the cavitation erosion on the surface of the hydraulic turbines.Some argumentation was presented that micro jet impacted the wall with a certain degree when bubble collapsed with the result that the maximal strain of the wall annularly distributed the local of the boundary touching the micro jet.Cavitation was gradual to develop regionally at the mode of chain reaction and di...

针对水轮机叶片表面气蚀的典型特征，利用CFD方法进行仿真计算，模拟气蚀形成和作用过程；根据模拟计算结果提出了新观点：空泡溃灭发生微射流以一定的倾角冲击壁面，壁面材料产生的最大应变在流束边界局部区域，呈环状分布；空泡气蚀在局部区域是渐进的，以"连锁反应"形式扩展，具有一定过流环境的分布特征；典型的冲蚀缺陷形貌是空泡气蚀在不同阶段的产物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。