搜索结果: 91-105 共查到“知识库 化工流变学”相关记录146条 . 查询时间(2.892 秒)
加齿被动控制自由湍射流多尺度涡结构的实验研究
自由射流 湍流 迁移速度 加齿被动控制
2009/3/10
Turbulent flow field of the free jet with circular nozzle and wedged nozzles is measured using hot wire anemometry with resolution higher than the smallest turbulence time scale. Wavelet analysis is e...
The stretching and folding of fluid element during chaotic mixing field is studied using numerical method. The chaotic mixing process is caused by periodic secondary flow in a twisted curved pipe. U...
搅拌槽内液-固两相体系的数值研究（Ⅰ）流场的数值模拟
两相体系 数值研究 流场 数值模拟
2009/3/6
Three-dimensional solid-liquid flow is mathematically formulated by means of the “two-fluid” approach and the two-phase k-ε-Ap turbulence model. The turbulent fluctuation correlations appearing in the...
搅拌槽内液-固两相体系的数值研究（Ⅱ）临界搅拌转速的预测
搅拌槽 搅拌转速 数值研究
2009/3/6
The critical impeller speed, NJS, for complete suspension of solid particles in the agitated solid-liquid two-phase system in baffled stirred tanks with a standard Rushton impeller is predicted using ...
搅拌槽内的Rushton桨叶周围流场的PIV测量
Rushton桨叶 搅拌槽内
2009/3/6
In this paper, particle image velocimetry (PIV) was used to measure the mean and root mean square(RMS) velocity in the stirred tank with six-flat blade Rushton turbine and with no baffles. Two types o...
简单剪切流动中液滴断裂机理
drop deformation breakup
2009/3/6
The experimental results of the deformation and breakup of a single drop immersed in a Newtonian liquid and subjected to a constant shear rate which generated by counter rotating Couette apparatus wer...
颗粒尾涡增强湍流的大涡模拟以及气固两相流中湍流变动的数值模拟
large eddy simulation gas-particle flow turbulence modulation
2009/3/6
The turbulence enhancement by particle wake effect is studied by large eddy simulation (LES) of turbulent gas flows passing a single particle. The predicted time-averaged and root-mean-square fluctuat...
presence of volatiles can affect the end-use properties of polymer materials. Therefore, these volatiles must be reduced to a level below the maximum permissible limit. Conventional heat-rele vant tec...
模拟变形液滴和气泡运动的改进水平集算法
level set approach bubble drop flow
2009/3/5
An improved level set approach for computing the incompressible two-phase flow with significantly deformed free interface is presented. The control volume formulation with the semi-implicit method for...
This paper studies the influence of feed injection on the hydrodynamic behavior of fluid catalytic cracking riser reactors. Experiments were conducted in a cold model of 186 mm ID with two oppositely ...
内构件对高密度提升管内流体力学及径向气体混合的影响
high-density riser bluff internal solid fraction particle velocity
2009/3/5
Effect of bluff internals on the hydrodynamics and lateral gas mixing was studied in a 0.186m ID high-density riser. With the bluff internals, the extremely non-uniform radial profiles of solid frac...
模糊控制A/O脱氮工艺内循环回流量和外碳源投加量
脱氮工艺 模糊控制系统 硝酸盐 回收技术
2009/3/5
Nitrogen and phosphorous concentrations of effluent water must be taken into account for the design and operation of wastewater treatment plants. In addition, the requirement for effluent quality is b...
密度泛函理论在非极性纯流体表面性质研究中的应用
表面性质 密度函数理论 无极性流体 表面张力
2009/3/5
The density functional theory, simplified by the local density approximation and mean-field approximation, is applied to study the surface properties of pure non-polar fluids. A reasonable long rang...
流化床喷雾造粒过程的传热传质
流化床 干燥 喷雾造粒 传热
2009/3/4
This article presents a mathematical model of heat and mass transfer for the process of fluidized-bed spray granulation, which can be applied in the analysis of bed temperature profile, temperature an...