A numerical simulation is conducted based on the equation of conservation of momentum (N-S) and standard k- ε turbulent field, the relational numerical values between flow rate and rotation speed and pressure drawdown are calculated in combination with examples, the simulation result is consistent with measured values.
The simulation result using finite difference time domain method shows,at the working frequency leading to the effective index n_ eff-1,the reflection rate of the surface of photonic crystal with anti-reflection coating is reduced to below 1% in the range of incident angle less than 23 degrees.
The simulated results show that the nonuniformity along the x and y direction areη_x=4.6%,η_y=5.3% respectively, the energy efficiency can be up to 95.3%,and by moving the target slightly backward from the focal plane,off- focus lengthΔz=2 mm is obained,which nearly satisfies the need.
Taking the water system and water quality in Chengdu as example, this thesis summarizes the basic method of combining the water quality simulating and geographical information system (GIS) technology, especially researches the analysis and management of the simulated results by the means of GIS technology.
本文以成都水系的水质模拟计算及其模拟结果的处理为例，提出了水质模拟技术与地理信息系统(Geographical Information System，GIS)技术结合的基本方法，着重探讨了利用GIS技术对模拟计算结果的分析与管理。
The performances of RF(radio frequency) integrated circuit(RFIC) spiral inductors on silicon(SIOS) with different planar structures were simulated based on a typical physical model using the HFSS(high frequency structure simulator). The simulated results are well coincident with those from theoretical analysis.
基于RF集成电路硅衬底螺旋电感(SIOS)的典型物理模型,用HFSS(High Frequency Structure Simulator)对中空平面四边形、八边形和圆形螺旋电感的电性能进行了模拟计算,结果与理论分析吻合.
The simulating analysis system can simulate the process of hazardous accidents of toxic material releasing,fire and explosion,analyze the simulating results by the hazard type and the media characteristics,and plot out the harmful area. It can also calculate the concentration of released substance and radiation flux of fire and explosion overpressure.
On the evacuation design, the quantity of safety exits around these buildings and the evacuation width should be increased if possible and the safety exit number, exit width and evacuation distance can be determined according to the simulating results on smoke layer temperature and height, concentration of CO2 and CO, occupants evacuation time and visibility.
On the evacuation design, the quantity of safety exits around these buildings and the evacuation width should be increased if possible and the safety exit number, exit width and evacuation distance can be determined according to the simulating results on smoke layer temperature and height, concentration of CO_2 and CO, occupants evacuation time and visibility;
According to the results of simulation of the new cycle using R12 and the alternatives R152a, R134a, R22/R152a as refrigerants, a significant profit in COP and volumetric refrigeration capacity relative to the simple vapor-compression cycle is obtained.
Rationality of method of parameter design is validated on the flat roof of ADVISOR2002 by an example of QR-HEV. The results of simulation calculation indicate that QR-HEV has the same dynamic performances as conventional vehicle, and fuel consumption of UDDS and HWFET driving cycle is decreased by 27.2% and 6.9% compared with conventional vehicle.
The results of simulation calculation and the analysis of operation sensitivity showed that the primary influence factors on separation accuracy of the tower were the top product output,and the next was the plate efficiency and reflux ratio.
The finite element model is correct and simulation result is fine by adopting unequal interval plotting patterns.
Simulation result and LAN-environment experiment result both indicate that PWD is an effective method to detect and block P2P worms.
The simulation result shows that the aggregation of conduction grains can greatly affect the degree of catalyst utilization.
It is demonstrated that the simulation result correctly reproduces the AMS data, and differences in spectra averaged over longitudes on various magnetic latitudes are small (including the low-energy range) for different models of the magnetosphere.
According to the numerical simulation result, the center-configuration coefficients for these nine configurations have been calculated and compared to validate this technique.
Finally, to analyze the impacts of the fiber nonlinear effects and PMD on the optical communication system, the simulated results of an 8×40 Gbit/s DWDM system are discussed under different conditions respectively.
The simulated results show that FSS may operate in different bands and especially generate a large reduction in the resonant frequency for a fixed unit cell size through different loadings.
Practical circuits are fabricated, and the measured results agree well with the simulated results.
The simulated results indicate that a steplike magnetization behavior is very sensitive to the concentration of AFM bonds.
Numerical values of interaction parameters were obtained by fitting simulated results to refined experimental data.
Results of simulation show the effectiveness of the control algorithms.
The quantitative correlation between the results of simulation and the data of physical experiments is established and is indicative of the applicability of the percolation theory to describe the process of intergrain wetting.
The results of simulation are compared to the results of space experiments carried out with the DACON instrument onboard the Mirstation.
As is shown by the results of simulation, the use of the first and the second orbits will result in reductions of microaccelerations by 30% and 60%, respectively.
The results of simulation are in good agreement with experiments in the stagnation region for impinging jets flowing coaxially against the disk.
1. Using electronic simulation for determining the chromatographical elution curve and the conclusions of previous authors, a general equation for the rule of material movements in partition chromatographic columns is obtained. The equation emphasizes the influences of the feeding time, the causes of a symmetry of the elution curve, and of the variation of the retention time, which seemed to be neglected by previous authors.
This paper is a continuance of paper . In it we discuss the effect of transversal viscosity in three-dimeusional gravitational systems of colliding bodies, and apply the results of numerical simulation to Uranu’s ring system. We obtain a relation: ar_p~2=2.33×10~9(year·m~2). Here, a is the age of Uranu’s ring, r_p is the radius of particles. According to realistic observations, we take r_p≈1(km), therefor, a≤2330 (year).
This paper is a continualice of paper . In it we discuss the effect of transversal viscosity in three-dimeusional gravitational systems of colliding bodies, and apply the results of numerical simulation to Uranu's ring system. We obtain a relation: ar_p~2 (?) 2.33 × 10~9 (year. m~2). Here, a is the age of Uranu's ring, r_p is the radius of particles. According to realistic observations, we take r_p = 1 (km), therefor, a≤2330 (year).