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therefore, the simulated pressure fields around a bubble agree more with the reported experimental results. isobars on the top and at the bottom of the bubble are not symmetrical. and, there is pressure gradient within the bubble.

因此,模拟所得气泡周围压力分布与文献试验结果更为一致:气泡上下两端等压线并不对称,并且内部存在一定的压力梯度。

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In the fluid test, working process in the cylinder such as compression process is simulated by hydrodynamic analysis tool, with the law of flow, temperature and pressure field variety obtained.

流体动力试验部分利用了计算流体动力学分析(CFD)工具进行了缸内过程(如压缩过程)的流体动力学仿真,得到了缸内流场、温度场和压力场的分布和变化规律;

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Through two methods measuring cutoff thrust and pressure of com-bustion chamber when testing liquid propellant rocket engine on ground, cu-toff impulse as simulated altitude condition is obtained. These methods are revie-wed simply, too.

本文叙述在地面条件下试验液体火箭发动机时,通过测量发动机后效段推力与测量发动机燃烧室压力两种方法来求得模拟高空后效冲量,并对这两种方法作简单评论。

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The slight pressure injury simulated by Instron texture instrument could be detected through the Otsu threshold segmentation, expansion operation and boundary extraction and the corner detection of the fruit image.

对于采用万能试验机模拟的轻微压伤,通过Otsu阈值分割、膨胀操作并提取边界的图像处理方法,最后对水果边界进行角点检测。

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The particularity of the altitude simulated test of an engine with Laval nozzle was analyzed in brief. The engine thrust determination and correction in altitude test with large deviation of simulated ambient pressure was put forward.

简析了拉瓦尔喷管发动机高空模拟试验的特殊性,提出了大模拟偏差条件下确定和修正拉瓦尔喷管发动机推力的方法。

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Using explicit time-integration method and penalty contact algorithm, the process of contact mechanics between multi-core wire bunch and pressure connected terminal was simulated dynamically, and by means of connection area of pressure connection, the stability of its electronic information or power transmission was evaluated indirectly.

以显式时间积分法和罚接触算法,动态地仿真多芯线束与压力连接端子间的接触力学过程,并通过压力接触连接面积,间接地评价其电子信息或电力传输的稳定性;

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Tire road contact pressure distribution and cornering performance is concluded. 6. The combined pattern tire dynamic rolling at70km/ h speed in a horizontal road is simulated in ABAQUS/ Explicit.

得出了接地压力分布情况及侧偏性能。6.在ABAQUS/Explicit中模拟了组合花纹轮胎在水平路面上以70km/h速度动态滚动的情况。

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Research on Control System of Simulated Atmospheric Pressure Cabin

大气压力模拟舱控制系统研究

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The atmospheric pressure discharge in an air gap between two dielectric barrier electrodes has been studied experimentally and the development of an electron avalanche in such an air gap was simulated numerically.

利用介质阻挡电极结构,对101325×105Pa气压下空气间隙中的放电进行了实验研究,数值模拟计算了实验条件下电子雪崩的发展过程。

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Base on the actual welding thermal cycles curve of rail through air pressure welding, welding themal cycles process was simulated by Gleeble thermal simulation tests.

通过实测钢轨气压焊的焊接热循环曲线,并以此作为基础数据,采用Gleeble热模拟试验的方法模拟钢轨在气压焊工艺条件下的焊接热循环过程。

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Established indoor has simulated the test platform, the test result indicated that enhanced the revolving jet flow to break ground the effect to increase the jet flow power, and enhanced the jet pressure to the effect enhancement which broke ground is very obvious.

建立了模拟试验系统,试验结果表明,提高旋转射流破土效果必须增大射流功率,提高射流压力对破土的效果提高是很明显的。

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The wire rope model of multiple magnification pulley block is built and simplified. The impaction about hook block is simulated by ADAMS software. The impact and the pressure on main hoist load girder were obtained.

研究多倍率滑轮组钢丝绳的建模和简化方法,利用ADAMS软件进行吊钩组冲顶动力学仿真,得到了吊钩组冲顶载荷及拉紧钢丝绳对主起升承载梁的压力载荷。

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Evaluating Precise Formula of Atmospheric Pressure by Using Simulated Annealing Algorithm

利用模拟退火算法求大气压强公式

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We simulated not only the pressure fluctuation in front of the runner, but also the unsteady vortex in the draft tube by means of the unsteady flow computation in an entire model turbine. Thus, the realistic hydraulic unsteady phenomena occurring in the turbine was predicted.

通过模型水轮机全流道瞬变流计算,不仅模拟到转轮前的压力脉动,而且模拟出尾水管中非定常涡带,从而预估出了水轮机中的水力非稳定现象。

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The flow field and the wind pressure distribution around a low-rise gable roof depending on the roof slope and the length of cornices are numerically simulated and systematically analyzed.

对屋面坡度、檐口竖向高度和水平外伸长度等关键参数,开展双坡低矮屋面周围流场和风压分布的系列化数值计算与分析比较。

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The distribution of water cushion pressure fields was simulated by using software Fluent 6.1.The results show that the load-carrying capacity of water cushion belt conveyor is improved by using offset muzzles.

用Flu-ent6.1软件对水垫压力场的分布进行了数值模拟.研究结果表明:与传统的喷嘴平行布置方式相比,改进的喷嘴错位布置方式能够大幅度地提高水垫带式输送机的承载能力;

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Through isothermal adsorption simulated experiment, the adsorptivity of shale was studied. In a certain temperature and pressure conditions, the adsorptivity of shale and richness of organic matter has a better positive correlation, but influence of clay minerals on the adsorptivity of shale is secondary.

通过等温吸附模拟实验,研究了页岩的吸附性特征,在一定温压条件下,页岩的吸附能力与有机质丰度具有很好的正相关关系,而粘土矿物的影响是次要的。

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