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模型尺寸
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  model size
     The perforation diameter, its depth, perforation axial line and the included angle of maximum horizontal stress, the loading speed of fracturing fluid, model size, initiation formation pressure and 2 dimensional fracture extension are numerically calculated by using software of rock fracture process analysis (RFPA) under the conditions of different hydraulic perforation parameters and in situ stress. During the calculation the simulated physical properties of rock samples basically remain constant.
     利用RFPA(Rock Fracture Process Analysis)软件,数值计算了不同水力射孔参数及地应力等条件下的孔眼直径、射孔深度、射孔孔眼轴线与最大水平应力夹角、压裂液加载速度、模型尺寸、地层起裂压力以及裂缝二维扩展情况,计算过程中模拟的岩样物性基本保持不变。
短句来源
     Two dimensional airfoil NACA0012 transonic testings have been conducted in NH-1 transonic wind tunnel in Nanjing Aeronautical Institute. This paper makes an approach to effect of wall porosity and model size on the static pressure at reference points of the plenum chamber and on the surface pressure distribution of the airfoil.
     在南京航空学院NH-1三音速风洞进行了NACA 0012翼型跨音速风洞实验,讨论了洞壁开闭比和模型尺寸对驻室参考点静压、翼型表面压力分布的影响。
短句来源
     However, because the model size is limited, it produces the disturbance wave field. This disturbance uses the Higdon boundary condition to absorb it.
     而由于模型尺寸有限,所产生的干扰波场使用Higdon边界吸收条件。
短句来源
     Twodimensional airfoil NACA0012 transonic tests have been conducted in NH-1 trisonic wind tunnel of Nanjing Aeronautical Institute. This paper makes an approach to effect of wall porosity and model size on the static pressure at reference points of the plenum chamber and on the surface pressure distribution of the airfoil.
     在南航NH-1三音速风洞进行了NACA0012翼型跨音速风洞实验,讨论了洞壁开闭比和模型尺寸对驻室参考点静压、翼型表面压力分布的影响。
短句来源
     The results show that the variation of both wall porosity and model size has marked effect on the static pressure at reference points of the plenum chamber and the variation of wall porosity alone has considerable effect on the surface pressure distribution of the airfoil.
     结果表明,开闭比和模型尺寸对驻室静压有明显影响,开闭比对翼型表面压力分布有很大影响。
短句来源
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  model scale
     For a prototype, the scale and pressure reduction ratio is more easily attained maintaining than Gr/Re 2 in engineering applications. The model scale and working pressure in the ground based experiment can be predicted from the scale and pressure reduction ratio.
     在工程应用中 ,对一定的原型工况 ,采用缩减比参数比采用 Gr/Re2 参数更直观 ,可以指导对地面模拟实验中合适的模型尺寸和工作压力的确定
短句来源
  “模型尺寸”译为未确定词的双语例句
     Dimension Information Extracting of Solid Model based on Pro/Toolkit
     基于Pro/Toolkit的实体模型尺寸信息的提取
短句来源
     The dimension precision of the CAD model is in ±0.1 mm.
     管道的CAD模型尺寸精度在±0.1mm以内。
短句来源
     The results show that the natural frequencies of the double J-like model are less than those of the traditional model. when the scale parameters of the double J-like model R=1.6 mm, r=1.2 mm and H=8 mm, its three natural frequencies have been given, f_1=30.90 Hz,f_2=105.99 Hz, f_3=130.84 Hz.
     分析结果表明,双J形隔震封装模型的固有频率明显低于传统的隔震封装模型的固有频率,双J形隔震封装模型尺寸参数为R=1.6mm,r=1.2mm,H=8mm时,其固有频率为:左右振动模式f21=30.900Hz,前后振动模式f22=105.99Hz,上下振动模式f23=130.84Hz.
短句来源
     In this paper, regular wave, geometric scale of 1:35, two kinds of wave steepness of 1/20 and 1/25 are employed in the model test of wave. The model geotube embankments with top width of 15cm, heights of 12cm, 18cm, 24cm, and degrees of slope of 1.25, 1.5, 2.0,2.5 are employed.
     本试验采用规则波进行模拟,几何比尺为1:35,波浪模型试验选用了1/20、1/25两种波陡,所选管袋堤坝的模型尺寸为:顶宽15cm,坝高12cm、18cm、24cm,边坡坡比m为1.25、1.5、2.0、2.5。 研究的主要内容如下:
短句来源
     External Database Accessing and Dimension Driven of Models in the Application Development of Pro/E
     Pro/E二次开发中外部数据库访问及模型尺寸驱动
短句来源
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  model size
The boundary conditions for calculating the thermal evolution of the early Earth are refined by simultaneously analyzing the sizes of impact thermal anomalies and the model size distributions of projectiles (the mass spectrum of planetesimals).
      
For the dynamic environment case, the algorithm is polynomial-time in the model size, but it is exponential-time in the structure of environment specification.
      
The latter are shown to decrease markedly with increased constraint on the local environment, but the remaining phason strain would seem finally not to vanish with increasing model size.
      
Thus, they possessed a higher anodic EPM (two electrophoretic fractions faster) and a slightly larger model size (134 μm3) than normal adult B cells (122-124 μm3).
      
The lognormal distribution characteristics can be seen for some high concentration samples, showing that model size and standard variation are greater than that in the Greenland ice cores.
      
更多          
  model scale
The effect of steel fibre used in concrete was systematically analyzed by model testing of 30 2-pile thick caps of steel-fibre reinforced concrete, in which the model scale was 1:5.
      
The correspondence relationships of various characteristic parameters in the actual and laboratory model scale cases are obtained.
      
It is shown that modified versions of the MIT bag model can fairly describe non-singlet pieces of experimentally known structure functions if theQ2-evolution equations are trusted down to the model scale.
      
We calculate the stern flow for the case of HSVA ship model at two different Reynolds number; one is Re=109 for full scale and the other is Re=5×106 for model scale.
      
At the propellar plane, full scale solutions show that the velocities in the shear layer increase and the wake region is substantially reduced by 20% compared with the model scale solutions.
      
更多          


This article presents the significance of phsical simulation for studyinggeneral characteristic parameters of radio proximity fuze and analyses simulativeinitiating Conditions of the fuze in the process of missile-target encounter basedon the theory of simularity. Emphasis is put on the discussion of simulativeprogram to reduce the size of model target and the velocity, and on the analysis of the requirement for various simulated parts of fuze in simulation.

本文讨论了物理模拟在无线电引信总体参数研究中的意义并依据相似理论分析了弹目交会过程中引信启动规律的模拟原则。重点讨论了缩小目标模型尺寸、降低运动速度的模拟方案,分析了各种体制的无线电引信进行物理模拟时对各模拟环节的要求。

Twodimensional airfoil NACA0012 transonic tests have been conducted in NH-1 trisonic wind tunnel of Nanjing Aeronautical Institute.This paper makes an approach to effect of wall porosity and model size on the static pressure at reference points of the plenum chamber and on the surface pressure distribution of the airfoil.The results show that the variation of both wall porosity τ and model size has marked effect on the static pressure at reference points of the plenum chamber and the variation of wall porosity...

Twodimensional airfoil NACA0012 transonic tests have been conducted in NH-1 trisonic wind tunnel of Nanjing Aeronautical Institute.This paper makes an approach to effect of wall porosity and model size on the static pressure at reference points of the plenum chamber and on the surface pressure distribution of the airfoil.The results show that the variation of both wall porosity τ and model size has marked effect on the static pressure at reference points of the plenum chamber and the variation of wall porosity alone has considerable effect on the surface pressure distribution of the airfoil.At α=0°under supercritical condition,as r changes from 6 to 0.5 percent,the shock wave on the upper surface of the airfoil moves aft about 20 percent of the chord length;When τ=4 the results approach to the blockage interferenec-free data,when α=1° and M∞=0.759 the optimal wall porosity τ approaching to wall interference-free is 4.

在南航NH-1三音速风洞进行了NACA0012翼型跨音速风洞实验,讨论了洞壁开闭比和模型尺寸对驻室参考点静压、翼型表面压力分布的影响。结果表明,开闭比和模型尺寸对驻室静压有明显的影响,开闭比对翼型表面压力分布有很大影响。在α=0°时,超临界流动条件下,开闭比从6变到0.5,翼型上表面激波位置向后移动范围达20%的弦长,开闭比为4时,翼型接近于无堵塞干扰。当α=1°和M_∞=0.759时。消除洞壁干扰的最佳开闭比为4。

Two dimensional airfoil NACA0012 transonic testings have been conducted in NH-1 transonic wind tunnel in Nanjing Aeronautical Institute.This paper makes an approach to effect of wall porosity and model size on the static pressure at reference points of the plenum chamber and on the surface pressure distribution of the airfoil.The results show that the variation of both wall porosity and model size has marked effect on the static pressure at reference points of the plenum chamber and the variation of wall porosity...

Two dimensional airfoil NACA0012 transonic testings have been conducted in NH-1 transonic wind tunnel in Nanjing Aeronautical Institute.This paper makes an approach to effect of wall porosity and model size on the static pressure at reference points of the plenum chamber and on the surface pressure distribution of the airfoil.The results show that the variation of both wall porosity and model size has marked effect on the static pressure at reference points of the plenum chamber and the variation of wall porosity alone has considerable effect on the surface pressure distribution of the airfoil.At a=0° under supercritical condition,as r changes from 6 to 0.5 percent,the shock wave on the upper surface of the airfoil moves aft about 20 percent of the chord length.When t=4 the results approach to the blockage interference-free data,when a=1° and M∞=0.759 the optimal wall porosity approaching to wall interference-free is 4.Therefore,the effect of wall interference is induced by the change of wall porosity on aerodynamic characteristic of model is remarkable.

在南京航空学院NH-1三音速风洞进行了NACA 0012翼型跨音速风洞实验,讨论了洞壁开闭比和模型尺寸对驻室参考点静压、翼型表面压力分布的影响。结果表明,开闭比和模型尺寸对驻室静压有明显影响,开闭比对翼型表面压力分布有很大影响。在α=0°时,超临界流动条件下,当开闭比从6%变到0.5%时,翼型上表面激波位置向后移动范围达20%的弦长;开闭比为4%时,翼型接近于无堵塞干扰。当α=1°和M_∞=0.759时,消除洞壁干扰的最佳开闭比为4%。因此,开闭比改变引起的洞壁效应对翼型气动力特性的影响是值得重视的

 
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