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The electron densities of statesof GaN under different biaxial stress field were calculated. The theoretical Auger spectra N KVV of various stress conditions were obtained by convoluting the DOS and fitting the experimental spectra.

通过第一性原理计算模拟GaN在不同双轴压应力场中的电子结构,根据拟合实验谱确定的组合系数,模拟出不同应变/应力下的N KVV的理论俄歇价电子谱;标定应变/应力与俄歇电子谱广义位移的定量关系。

The process of balance is on thealternation of arch and beam、 explores the space-time law of separatedstrata"s occurrence、 development and distribution and this paper damasks theoverlying rock as injecting zone and no-injecting zone from the aspect of controllingoverlying rock.2.The separated strata is over fracture zone and under integral crook zone inwhere the rock formation"s moving is of monolayer or of many layers more oftenthan not, and the thickness of strata is very small while comparing with integralcrook zone.

通过物理模拟及数值仿真模拟的实验研究,分析了采动覆岩的移动与破坏过程,提出了采空区上方覆岩的平衡形式是以拱和梁交替作用来实现平衡→失稳→再平衡的力学过程观点,并详细研究了覆岩中离层产生、发展与分布的时空规律,进而从覆岩控制角度划分了可充填离层带与不可充填离层带,为实际应用奠定基础; 2。

A successful analytical approach is conducted effectively by manipulating the "Dytran" software to simulate the phenomenon of plane shock wave impulse on metal boards, not only the cost and risk of experiments are reduced, but also the strain status is foreknown.

本研究中成功的发展出Dytran程式模拟震波冲击金属板的分析方法及有效模拟,除可减少实验的风险及成本,也可提早预测金属板受震波冲击的应变状况。

The results showed that entrainer reflux ratio: 1:5 of the top tower, the concentration of separated isopropanol is 99.5%; The maximum yield of isopropanol is 78%; simulation calculation result inosculates with the experimental result. The simulation calculation can reflect actual course.

结果表明,当共沸剂塔顶回流的回流比为1:5时,分离得到的异丙醇浓度可以达到99.5%;异丙醇的收率最高,最大收率可达78%;模拟计算结果与实验结果吻合得较好,模拟计算可以反映实际过程。

The CFD software STAR-CD is used to simulate the normal operating conditions of cold and hot plenums in China Experimental Fast Reator. Complex 3-dimension model is established by using porous medium method. The temperature and velocity distributions of cold and hot plenums are given. These results are compared with the data of the thermal designs of CEFR which have been completed. Meanwhile, the influence of the buoyancy forces is analyzed.

应用计算软件STAR-CD对中国实验快堆正常运行工况中的额定工况进行了三维数值分析,使用多孔介质模型对屏蔽柱的影响进行了模拟,给出了冷热钠池的三维温度场和流场,与已有热工设计进行了比较,并著重分析了浮升力在数值模拟计算中的影响,为事故工况下的设备动态分析及相应的设备力学分析提供了数据。

The CFD software STAR-CD is used to simulate the normal operating conditions of cold and hot plenums in China Experimental Fast Reator. Complex 3-dimension model is established by using porous medium method. The temperature and velocity distributions of cold and hot plenums are given. These results are compared with the data of the thermal designs of CEFR which have been completed. Meanwhile, the influence of the buoyancy forces is analyzed.

应用计算软件STAR CD对中国实验快堆正常运行工况中的额定工况进行了三维数值分析,使用多孔介质模型对屏蔽柱的影响进行了模拟,给出了冷热钠池的三维温度场和流场,与已有热工设计进行了比较,并着重分析了浮升力在数值模拟计算中的影响,为事故工况下的设备动态分析及相应的设备力学分析提供了数据。

Last, based on the rumpling mechanism of elastic film on elastic-plastic metal layer, the evolution of oxidation localization area was simulated numerically

最后,基于在循环载荷作用下,附着在弹塑性金属基体上弹性薄膜的起伏机制,对循环氧化条件下,热障涂层氧化局域化区域的演化进行了数值模拟,对模拟结果和实验数据之间的差异进行了分析。

This paper using the FEM software Marc, for the 50 and 60 degree V groove of flat plate butt joint simulate the one-layer and three layers welding, finish each welding and cooling it down to room-temperature then start the next welding true represent process and get the temperature field, residual deformation and welding residual stress, according to the theory analysis and empirical equation verified the temperature field and residual deformation all correct, comparison with experiment verified the welding residual stress regularity and correctly.

本文利用有限元软件Marc,对开60°和50°V型坡口的平板对接接头,动态的模拟了单层单道打底焊,焊完一道后让试件冷却到室温以及单层单道满焊,每焊完一道后让试件冷却,然后再焊下一焊道,道间温度≤200℃,在以此为初始边界条件下开始下一道的焊接,真实的再现了焊接过程,得出了温度场,残余变形和残余应力场的分布规律,根据理论分析及经验公式验证了温度场以及残余变形的正确性,角变形的大小,这些结果与数值计算相吻合。通过与实验测得的残余应力进行比较,验证了焊接残余应力的分布规律及模拟的正确性。

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。

A k-e-kp-e p two fluid model was introduced to study three dimensional flow behaviors of dense phase pneumatic conveying of pulverized coal in vertical pipe on the basis of the kinetic theory of granular flow, taking into account the turbulent interaction between gas phase and particle phase.

基于颗粒动力学理论,采用k-e-kp-e p湍流模式,对垂直管内高压密相上升流的三维流动行为进行了数值模拟,其颗粒浓度高达30%,并对部分模拟结果进行了实验验证。

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