| 1. | The basic parameters , such as temperature , pressure , turbulence kinetic energy and the turbulent kinetic energy dissipation rate , are also analyzed 绘制了压力和温度曲线,以及压力、温度、涡流动能、涡流动能扩散率等值线图。 |
| 2. | According to the distribution of the turbulence kinetic energy and turbulence dissipation rate in the whole flow field , the mechanism of energy dissipation of stepped spillway is analyzed 本文首次从紊动能和紊动耗散率在整个流场的变化规律出发,分析了阶梯的消能机理。 |
| 3. | By the three dimensional numerical simulation of a project case , the distribution of pressures , turbulence kinetic energy and turbulence dissipation rate in the gentle slope spillway overflow are obtained 通过对工程实例的三维数值模拟,得到了缓坡阶梯坝面上的水压力、紊动能和紊动耗散率的分布规律。 |
| 4. | The distributing of the velocity in the intake port and on the port exit and the distributing of the turbulence kinetic energy are get . the momentum moment flow rate is used to scale the swirl . some advices to improve on the port are put forward 使用ansys的后处理模块对计算结果进行处理,得到了气道内、气道出口的速度分布、紊流动能分布等结果,采用动量矩流率对涡流水平进行了评定,并对气道的改进提出了一定的建议。 |
| 5. | One of the main reasons of the step spillway having greater energy dissipation is that the potential energy of the flow continuously transforms to the kinetic energy along the spillway and the kinetic energy partially transforms to the turbulence kinetic energy , and the flow energy is finally dissipated by means of turbulence dissipation 研究表明,阶梯坝面水流能量耗散较大的重要原因之一是由于势能沿程不断转化为动能,而动能又部分转化为紊动能,进而由紊动耗散的方式而消耗。 |
| 6. | Besides , in this paper , the velocity distributes and recirculation areas of two phases are shown , and the differences between simulations and experiments are diminutive . turbulence kinetic energy ( ? , turbulence dissipation rate ( e ) , reynolds stress and turbulence intensity are also simulated to reflect turbulence flow 另外,本文计算了旋流燃烧器内气固两相的速度和回流区的分布,并和已有的实验数据进行了比较,同时还计算了湍动能、湍能耗散、雷诺应力和湍流强度等反映湍流的物理量。 |
| 7. | A one - dimensional oceanic mixed layer model with the m - y level - 2 . 5 turbulence closure schemes is employed . the rate of energy loss by breaking waves is estimated by parameterization and incorporated into the model as a source of turbulence kinetic energy ( tke ) by modifying the existing surface boundary condition of tke equation . the velocity field and turbulence energy budget are calculated under different forcing conditions ( the results given below are for a wind speed of 20 m / s . ) 采用一维2 . 5阶湍封闭混合层模式,根据参数化方法对波浪破碎导致的能量耗散率进行了估计,通过改变湍动能方程的上边界条件引入波浪破碎对湍动能生成的影响,计算了不同风应力强迫下的混合层流场结构和湍能量收支(下述给出的结果是取风速为20m s得到的) 。 |