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Comparison between simulation results and experimental data shows that combination of simplified reaction dynamics and CFD can give an accurate simulation of traditional SNCR and SNCR process with methane additive.

模拟结果与实验结果的对比分析表明,采用简化的反应模型和CFD结合可以对常规SNCR反应和加入CH4的脱除NOx反应过程进行较为准确的模拟。

Comparison of the results obtained by simulations and experiments shows that that the advection term has little effect on the results of injection process simulation and on those of free surface shapes in viscous flow injection.

对模拟和实验结果的比较表明,对流项对粘性流注射填充过程和的其中的自由表面形状的模拟结果影响可以忽略。

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。

Based on engineering design method and combined with numerical simulation,an axial symmetry supersonic inlet with boundary layer bleed was designed.

应用工程设计方法,结合数值模拟,设计了一种带有边界层吸除型式的超声速轴对称进气道,对进气道内流场进行了数值模拟研究,并且进行了风洞实验。

Founds three-dimensional analytic model and analyses heat transfer with phase change with the help of numerical simulation software using Euler backward difference.

通过实验分析了冰水两相流在垂直和水平管道流动时的压降特性;建立了冰融解的三维分析模型,采用欧拉向后差分法,利用ANSYS数值模拟软件对冰水相变传热进行了数值模拟分析,得出冰粒大小与融解时间两者的关系曲线。

On the basis of referring the foreign and domestic literatures and systematically generalizing the former research results, firstly, from the adsorption gas, coal spontaneous combustion and the heat resolves, thesis analyzes the ignitable gas occurrence. Secondly, though the experiment station of coal spontaneous combustion, thesis obtains the critical temperature 60 ℃~ 100 ℃, splits temperature 100℃~ 150 ℃, the fission temperature 150℃~ 180 ℃ and the speed-up temperature 210℃~ 250 ℃ and ignitable gas release rules in the several temperatures sections according to the results. Finally according to fire resource and the catastrophe theory, ignitable gas explosion characteristic and the influence factors have been conducted of the qualitative investigation and the quantitative determination. The gas explosion control technologies are put forward. It has built the certain foundation for the effective prevention gas explosion accident occurrence.

本论文采用理论分析和实验模拟相结合的综合研究方法,首先从煤层吸附瓦斯、煤氧复合过程及煤高温热解三方面对采空区可燃性气体的产生进行分析;其次通过对大型煤自然发火实验测试台的应用,根据实验结果得到临界温度60℃~100℃、干裂温度100℃~150℃、裂变温度150℃~180℃和增速温度210℃~250℃等几个温度段的可燃性气体释放规律;最后根据爆炸引火源,结合瓦斯爆炸流变-突变理论,对可燃性气体爆炸特性及影响因素进行了定性研究和定量测定,提出瓦斯爆炸事故的控制对策,为有效预防瓦斯爆炸事故的发生打下了一定的基础。

And Finally according to theprogramed algorithms, simulation and experimental stitchings are porformed for testing thealgorithm accuracy. Results show that, the comprehensive errors of theretical andexperimental wavefront stitchings are less than 10~(-6)λand than PV/10 (where PV refering towavefront peak-to-vally value), respectively. Furthermore, experimental research isconducted on the influence of stitching accuracy by sub-aperture overlapping area andstitching modes, with subaperature real-time stitching test for large plano-optic broughtabout.

第三,对编写的算法程序进行了模拟拼接实验和实际拼接实验,测得该算法程序的精度为:理论拼接波面的综合误差小于10~(-6)λ,实际拼接波面的综合误差小于PV/10(PV为被测波面相位峰谷值);在此基础上,又就子孔径重叠区域大小和拼接模式对拼接精度的影响进行了实验和分析,实现了大口径光学平面的子孔径实时拼接检测。

Allthe models satisfy the precision and strength requirements.6 CFD is employed to simulate the application of tube with static mixer in anindustrial furnace, in which a tube model library containing the geometricalmodel and physical model in common use is build.7 Disturbed flow in tube with static mixer is demonstrated in an experimentsystem designed and manufactured by the author. Fluid field is measured byuse of seven-hole probe method. An experimental system are designed and builtfor this purpose.

建立了一个由模型的几何、物理参数组定义的常用模型的模型库,提高计算效率,缩短放大研究周期。6、提出了基于速度的流场扰流效果的评价方法,将之应用于流场设计和扰流元件结构优化的评价中,获得了量化的评价结果。7、设计、制造流动显示实验系统,验证静态混合式炉管对流体的扰动效果:采用七孔探针流体力学实验方法,在流体力学实验测量系统中,对静态混合式炉管模拟流场的三维速度分布和流体、压力降等进行测量。

Qualitative results are obtained by using this method in fluid fielddesign and structure optimization of disturbing elements.5 Experimental models are made efficiently and accurately by RPM method. Allthe models satisfy the precision and strength requirements.6 CFD is employed to simulate the application of tube with static mixer in anindustrial furnace, in which a tube model library containing the geometricalmodel and physical model in common use is build.7 Disturbed flow in tube with static mixer is demonstrated in an experimentsystem designed and manufactured by the author. Fluid field is measured byuse of seven-hole probe method. An experimental system are designed and builtfor this purpose.

建立了一个由模型的几何、物理参数组定义的常用模型的模型库,提高计算效率,缩短放大研究周期。6、提出了基于速度的流场扰流效果的评价方法,将之应用于流场设计和扰流元件结构优化的评价中,获得了量化的评价结果。7、设计、制造流动显示实验系统,验证静态混合式炉管对流体的扰动效果:采用七孔探针流体力学实验方法,在流体力学实验测量系统中,对静态混合式炉管模拟流场的三维速度分布和流体、压力降等进行测量。

This paper introduces the studies of the ultra-short Thomson scattering X-ray source at the accelerator laboratory of Tsinghua University in recent years. Properties such as the photon yield,the pulse length and time jitter of the produced photon pulse were predicted theoretically from the parameters of the electron bunch and the laser pulse,and the scattering angle. Preliminary experiments were successfully carried out with a 16 MeV backward-traveling-wave accelerator and the ns-Q switched laser provided by China Academy of Engineering Physics. This paper also introduces the 1.6-cell electron gun that was fabricated on site and the experiment with high RF power including the measurement of the electron bunche parameters. Based on these,we have designed an X-ray source,which is now under construction.

介绍了清华大学加速器实验室近年来关于汤姆逊散射超短X射线源的研究工作;研究了在任意散射角度下电子束参数和激光束参数对散射光子参数的影响,给出了散射光子的参数如光子产额、脉冲长度、时间抖动等与电子束参数、激光束参数和散射角度的关系;利用实验室已有的16 MeV反波行波加速器与中国工程物理研究院激光聚变研究中心提供的ns调Q激光搭建了汤姆逊散射初步实验平台并开展了实验研究;加工了1.6-cell光阴极微波电子枪,搭建了高功率实验平台,对产生的电子束参数进行了初步测量;对汤姆逊散射超短X射线源进行了设计并开展了相关的平台建设工作,对产生的X射线脉冲参数进行了模拟。

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