查询词典 velocity function

Consequently the diathermancy was strengthened, the effect of heat transfer was improved and the flow and combustion process in the boiler has become much better. First, in this thesis the burn characteristic of the rubbish and the process of combustion in the chain boiler has been studied. A series of mathematic model has been given. This thesis carefully introduced the principle and formula of the turbulent flow model、two-equation model、radiation model、dispersed phase model and standard wall function method. The software FLUENT has been applied to simulate the temperature、pressure、velocity and mass fraction of species in the boiler furnace and stokehole. The analysis and the comparison have been done. The calculation results indicate agreement with the fact and the studies both here and abroad.

首先，本文针对SZL10-1.25-MJ造纸垃圾焚烧锅炉，结合其燃料的特性，对垃圾的燃烧特性以及层燃炉中垃圾的焚烧过程进行分析；给出一套完整的垃圾锅炉炉内传热数学模型，并分别详细阐述了湍流流动模型、双方程模型、辐射传热模型、离散相模型及标准壁面函数的原理及计算公式；借助于Fluent软件平台对炉膛内的温度场、速度场、组分浓度场及炉膛出口的温度分布、速度分布、组分浓度分布等进行数值模拟，分别从定性和定量的角度与实际情况进行了比较，得到了较满意的结果；模拟结果与国内外的很多研究能较好符合。

The model Boltzmann equation s, which are derived from the transformations of reduced distribution function and discrete velocity ordinate together, are solved through using an implicit flux-corrected second-order upwind TVD scheme.

模型 Boltzmann方程先后经简化分布函数和离散速度坐标变换后，采用一个隐式通量修正二阶迎风TVD格式差分求解。

In addition, the velocity and pressure distribution of the laser-induced plasma shock wave as a function of distance is presented.

进而采用自行研制的光纤传感器跟踪探测等离子体冲击波的形成及发展过程，从实验验证了该理论模型的正确性。

One is based on representing the smoothed distribution function on a grid in velocity and position.

一个是基于代表分布函数平滑的网格在速度和立场。

According to this argument, similar to one-dimensional two-phase flow, the vapor's drift velocity in multi-dimensional two-phase flow is supposed to be a function of the modified acceleration .

上述研究成果得到了国际同行的高度评价，并据此开辟了分析多维、多成分、多相流漂移流率模型研究的新领域，研究成果对发展多相流数学解析模型有重要的理论意义，在工程上有重要的应用前景，研究工作取得了起过预期目标的重要成果。

All indexes of systolic function (systolic peak velocity Vs、systolic peak displacement Ds、 and ejective fraction of left ventricle EF)were examined against baseline, at the end of 60 min ischemia and after 180 min reperfusion.

实验犬分别于缺血前基础状态、缺血60分钟、再灌注180分钟时进行心脏收缩功能指标参数，即收缩峰值速度、收缩峰值位移、左室射血分数测量。

The values obtained in thepresent study for the electron energy distribution function,drift velocity,ionizationcoefficient and attachment coefficient,etc.,are calculated and compared with theexperimental results reported in the literature,and the comparison is also carried outwith the values obtained from the two different types of fields.

应用Monte Carlo模拟法研究了氧气放电的电子参数，得到了在均匀电场中的电子能量分布、平均能量、漂移速度、电离系数、附着系数、迁移率及扩散系数随时间、电场强度的变化关系，并与文献上的实验结果进行了比较。

Considering the electrovalence, the curve of water consumption and the reliability of water supply, this paper respectively sets up the model based on the maximal flux and the model based on the expectation flux. It takes yearly expenditure converting value and yearly cistern converting value as target function and takes continuity equation, velocity of flow and compression resistance of cast iron pipeline as restrictions and sets up the PGA model on optimal design of water supply networks.

考虑到峰谷电价、用水量变化曲线及用水可靠性因素的影响，分别建立了以最高时流量设计管网的模型和以期望时流量设计管网的模型，以年费用折算值加上清水池年造价折算值为目标函数，以连续性方程、管中流速和铸铁管耐压值等为约束条件，进行并行遗传算法对给水管网优化设计的实现。

System velocity is the basis for an error function which passes through a PID controller.

速度是基础，制度是错误的功能，通过PID的控制。

Cardiac murmur can be easily heard in the patients with normal cardiac function, fast regurgitant velocity, thin chest wall and excursive regurgitation jets.

心功能低下、返流速度缓慢、胸壁厚、血流方向居中者不易闻及二尖瓣收缩期返流性杂音。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。