数值函数

The meshless method was introduced to simulate the propagation of 2D water wave s.

在水波传播的数值模拟中采用了一种基于配点和径向基函数的无网格方法。

By numerical calculation in order to change the values of eigenvalues, and then calculate the corresponding wave function.

详细说明：通过数值计算的方法依次改变本征值的取值，然后计算出相应的波函数。

First, the paper presents mathematically the existence of a solution in the weak formulation of SBV space.

首先在数学上指出了 MS泛函弱解在 SBV函数空间中的存在性，然后讨论了计算弱解的数值逼近方法。

Stability of theoretical and numerical solution to stiff integro-differential equa-tionsand to stiff integro-differential equations of integral limit which depends on state function yare discussed in this paper.

中文摘要：本文研究刚性积分微分方程初值问题及积分限依赖于状态函数y的刚性积分微分方程初值问题的理论解及数值解的稳定性和收敛性。

If the requested number is not a multiple of eight the remaining bits should be set to zero.

如果回调函数要写这个缓冲区，没有用到的线圈（例如不是8个一组的线圈状态）对应的位的数值必须设置为0。

In this thesis, by the means of calefactive oxidation test of coal samples, the characteristics of different samples spontaneous combustion are analyzed; the infrared spectrum is assimilated to review the rule that coal function corps change in the process of coal low-temperature oxidation ; by the means of thermal analysis by differential scanning calorimeter, thermogravimeter, the kinetic function of coal low-temperature oxidation in spontaneous combustion process are analyzed , depend on the device, the mathematical model of coal spontaneous combustion is developed, the model are dealt with, Finally, the temperature field and the velocity field with velocity of the entry flow is got.

论文通过煤的低温氧化和自燃过程，实验研究了煤的低温氧化气体产物特征和变化规律，研究得出了煤的低温氧化过程中气体生成量与氧气消耗量与煤温之间的指数关系式；在煤的低温自热氧化过程中，对煤的官能团等化学结构的变化研究，揭示了煤炭低温自热氧化化学基团变化规律；采用非等温TG和DSC法研究了烟煤低温氧化动力学，得出了煤低温氧化分布活化能及煤低温氧化机理函数的变化规律；建立了煤低温氧化自热数学模型，并对该模型进行数值解算，可得煤样的温度场与速度场随入口风量变化情况。

Research results indicate that continuous Regional Identification Function is used in nodal virtual flux method, volumn integral and surface integral enhances the convergence and stabilization;using 'put a big number' to deal with the first boundary is faster than 'Remove row and column', the more the first boundary nodes are the more obvious advantage will display;PCG method is quite faster than Crout method to solve equations;it is reliable to use three-dimensional finite element simulation theories to simulate and predict deep foundation pit dewatering in such areas.

研究结果表明，在结点虚流量法及计算体积分和面积分时引入连续的区域识别函数增强了解的收敛性和稳定性；处理已知水头边界的&置大数&法在时间上要比&去行去列&法短一些，定水头边界节点越多，其优越性表现越明显；PCG法比直接解法快很多；三维有限元数值模拟理论用于模拟预测此类地区的深基坑降水具有较高的可信度。

By combining k-ε models with the wall function calculation method and using the SIMPLE method for programming,the flow field in exhaust facility ,which has a low pressure heater and pressure reducer and desuperheater in it,has been treated with three-dimensional numerical simulation and the velocity distribution of the flow field in exhaust facility is herewith obtained.

采用k-ε模型并结合壁面函数法，利用SIMPLE算法编程，对某具有内置式低压加热器和减温减压器的直接空冷汽轮机排汽装置的内部流场进行了三维数值模拟，得到了整个排汽装置内部流场的速度分布情况。

However, the vast computation cost, the implicity of object function and discontinuousness of search space limit the application of traditional gradient-based optimization methods.

然而，由于计算时问长，目标函数无法显式表述，搜索空间可能不连续等因素，很难直接基于数值仿真通过梯度法进行设计优化。

The experimentative result of the three common testing functions shows the validity of the algorithm.

对三个常用测试函数的数值仿真结果显示了该算法的有效性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。