The results show that the Mach number and Stokes number are decisive similarity criterion,and the modeling errors of the particle impacting velocity and angle on nozzle wall are less than 5% and 3°,respectively.
结果表明:马赫数和斯托克斯数(Stk)是两相流动的决定性相似准则,其对粒子与壁面撞击速度的模化误差小于5%,撞击角度的模化误差小于3°;经过多种参数组合试验才能筛选出实现Stk在相应位置对应相等的数据,数值模拟预测可减少试验模化参数选择的盲目性。
The acting force of wind on structure includes inertial force and viscous force,the magnitudes of the two forces are related to the shape of structure,the acting force on a kind of structure is dominated by inertial force,and that on another kind of structure is dominated by viscous force,so neither gravity similarity criterion nor viscous force similarity criterion only can be used to d.
所以,在波浪物理模型试验中不能简单地采用重力相似准则也不能采用粘滞力相似准则来确定风速比尺。
Refering to the deducing method of similarity criterion in classical fluid mechanics,the structural dynamics similarity criterion of large span roofs is detailedly deduced in the paper.
参照经典流体力学流动相似准则的推导方法,针对大跨度屋盖详细推导了结构动力相似准则,并对各相似准则进行了细致的讨论及取舍,总结出大跨度屋盖气弹模型风洞试验需要满足的相似条件。
The results show that the principal similarity criterion is Reynolds(criterion of dynamic similarity).
结果表明,主要相似准数为雷诺数(动力相似准数)。
We seek their dimensional performance curve and similarity criterion and their critical criterion that decides similarity working order.
本文探讨叶轮机械中 ,主要包括叶轮风机 ,叶片泵和水轮机 ,透平压缩机和汽轮机的有因次的性能曲线 ;另外对透平机械的各相似准数进行探讨 ;探讨决定相似工况的决定性准则。
In the environment wind tunnel experiment the dimensionless parameters,initial boundary and plume dispersion characteristics were discussed and the main similitude criteria were acquired.
从基本相似原理出发 ,提出理论上精确相似的5个无量纲参数和边界条件 ,具体针对大气边界层环境风洞实验的特点 ,对各个无量纲参数及边界条件进行了详细的分析研究 ,得出大气边界层环境风洞实验主要应遵守的各无量纲参数和边界条件的相似准则 ,为大气边界层环境风洞实验提供了理论根据。
Similitude criteria for steady operation and non-steady operation of externally pressurized spherical gas bearing with inherent compensation were deduced,which may be considered a corrected form to the similitude criteria of hydrodynamic gas bearing put forward.
从静压气体润滑基本控制方程组的无量纲化着手,在详细分析静压气体轴承的耦合边界条件及非定常雷诺气体润滑方程特性的基础上,对Constantinescu给出的动压气体轴承相似准则进行补充,得到环面节流静压气体球轴承定常气体润滑膜及非定常气体润滑膜的相似准则。
The medel law and similarity rule have been obtained through similarity theory analysis based on the model test of smaller-bench blasting.
通过对现场小台阶模型试验进行相似理论分析，得出了该试验的模型律与相似准则。
The flow similarity of compressible non -isothermal and non-Newtonian fluids was analyzed by similarity rule , dimensional analysis and π- principle .
用相似准则、量纲分析和π定理分析了可压缩的非等温和非牛顿流体流动的相似性。
To solve the aerodynamic problems resulted from high-speed trains when they pass through a tunnel, a model experiment system for high-speed trains was set up on the basis of analyzing the relative present experiment systems(methods) at home and abroad, and its similarity rules were derived.
为了解决高速列车进出隧道引起的空气动力学问题,基于对目前国内外高速列车模型试验研究现状的分析,建立了模型列车速度可达100m/s的压缩空气式高速列车模型试验系统,并导出了模型试验的相似准则。
Some non dimensional similarity criteria about flotation machine scale up have been drawn up on the basis of the theory of similarity.
根据机械搅拌式浮选机的工作原理、结构特点和工艺要求 ,运用相似理论 ,阐述了机械搅拌式浮选机相似转换原理 ,制定了适用于选煤用机械搅拌式浮选机模拟放大设计的几何相似、动力相似和运动相似准则 ,用于保持浮选机相似转换后 ,具有相似的搅拌强度、充气速率和颗粒悬浮条件 ,为浮选机的科学设计奠定了理论基础 。
Aluminum roll casting according to Froude similarity criteria.
根据Froude数相似准则 ,做了铝铸轧铸咀型腔熔体流动的水模拟实验 ,其结论 :现有铸咀出口处熔体流动速度相对误差达19 %以上 ,不能满足超薄快速铸轧工艺的需
A water modeling test of melt flow was worked with regard to nozzle cavity for aluminium roll casting according to Reeff similarity criteria.
根据有效雷诺数Ｒｅｅｆｆ相似准则，做了铝铸轧铸嘴型腔熔体流动的水模拟实验，实验结果显示铸嘴型腔熔体流动行为受分流块相对位置、分流块结构尺寸、分流块数目影响很大，认为：使用小尺寸分流块，或适当增加分流块数目以及对于渐扩式侧壁的铸嘴型腔，转动分流块使其平行于侧壁，都能够获得更均匀的出口分布速度。
Numerical Computation of Aircraft Icing and Study on Icing Test Scaling Law;
飞机积冰的数值计算与积冰试验相似准则研究
The application simulation experiment of new dust-suppression based on similar criterion
基于相似准则的新型抑尘剂的应用模拟实验
Analysis and verification of an icing scaling method
一种结冰相似准则分析方法及数值验证
Theory and Application of the Scaling Laws for Physical Modeling on SAGP in Extra Heavy Oil Reservoirs
超稠油SAGP采油物理模拟相似准则及其应用
THE ADVANCE IN THE SCALING CRITERIA OF PHYSICAL SIMULATION FOR THE COMPLEX FLOWS SYSTEM IN RESERVOIR
油藏复杂驱动体系物理模拟相似准则研究进展
A classification of thermo-hydraulic models adoptable under different conditions is presented in this context and the relevant similarity criteria as well as their permissible relaxation are given.
据此观点提出了水力热力模型的分类和相应相似准则。
Investigation on Basic Equations and Scaling Criteria of PWR Natural Circulation
压水堆自然循环比例模化基本方程及相似准则数的研究
Infiltration Flux and Similarity Criterion during Centrifugal Casting Titanium Alloy Melts Feeding
离心铸造钛合金熔体补缩过程渗流流量及相似准则
Specific radar emitter recognition based on maximum-likelihood criterion
基于最大似然准则的特定辐射源识别
A new correlation ratio similarity measure in voxel intensity based medical image registration field was adopted.
在基于体素灰度的医学图像配准领域,本文采用了全新的相关比相似性测度作为配准的测度准则。
On Similarity in Function and Correspondence in Meaning;
评“功能相似,语义相符”的翻译标准
The Research on Correlative Questions of Our Principle-Oriented Accounting Standards;
我国原则导向会计准则相关问题研究
The rules and terms of softball are similar to those of baseball.
垒球的规则和专门用语与棒球相似。
Width is used when the measurements of the front and of the depth are similar .
若前面的长短与深度相似，则用宽度。
A Combination Rule of Evidence Theory Based on Similarity of Focal Elements
基于焦元相似度的证据理论合成规则
Structures of Crystalline Approximants of Zn-Mg-RE and Ag-In-Yb Quasicrystals;
Zn-Mg-RE及Ag-In-Yb合金准晶的近似晶体相
...for absolute obedience to her husband seemed to be her rule of life at this period
…如今对丈夫惟命是从似乎是她的生活准则。
ON APPROXIMATE HEDGING A CONTINGENT CLAIM IN THE MINIMUM VARIANCE CRITERION
最小方差准则下一个未定权益的近似对冲(英文)