An implicit finite difference method for a class of fractional dispersion advection equations 一类分数阶平流&扩散方程的隐式有限差分方法
Implicit difference method for the 3-D unsteady convection diffusion equation A New High Accuracy and Absolutely Stable Implicit Difference Schemes for Solving Parabolic Equations 求解三维非定常对流扩散方程的隐式差分方法抛物型方程的一个新的高精度恒稳定的隐式差分格式
Analyzes the advantages and disadvantages of characteristic method and implicit difference method, the calculation results obtained makes clear that the implicit difference method is suitable for analysis of fluid transient and less discrepancy. 分析了长输管道水力瞬变特征线法和隐式有限差分法的优缺点,并结合算例分析,指出隐式差分法适合于长输管道水力瞬变分析,计算误差较小。
Third, in condition of S-P model invalidation, use two methods to resolve this problem, which one is section the solving progress, and another use numerical method to get solution ( four-point implicit difference method). 第三,在SP模型失效的情况下,采用分段求解和非稳态四点隐式差分体系求解两种方法,所得结果较好,能够解决SP模型失效时的模型求解问题。
Implicit difference method to resolve mathematical model to predict the behavior of sucker rod pumping system in directional well 斜井有杆抽油系统动态参数预测模型隐式差分解
The characteristics method solution is applied extensively but the implicit difference method is little used for fluid transient problems. 特征线法是广泛使用的数值方法。隐式差分法在液体长输管道不稳定流动问题分析中应用则比较少。
A High-Order compact implicit difference method is proposed for solving the one-dimensional unsteady convection-diffusion equation with source term. The method is fourth order in space and second order in time. 提出了数值求解含源项非定常对流扩散方程的一种高精度紧致隐式差分方法,其空间为四阶精度,时间为二阶精度。
Study on Numerical Simulation of the 3-D Thermal Field in the Castings by the Implicit Difference Method 铸件三维温度场数值模拟隐式差分法研究
Numerical solution is given to mathematical model of formation temperature field by full implicit finite difference method. 并利用有限差分方法,对温度场数学模型进行数值求解。
Numerical algorithm is an implicit finite difference method related to the NND scheme. 差分算法是隐式NND格式。
An alternating direction implicit finite difference method ( ADI) is used to solve the downhole temperature model. 本文利用交替方向半隐式差分格式ADI对所建立的井下温度场模型进行求解。
However, on the basis of equation of continuity and equation of motion as well as equation of state when natural gas is flowing at dynamic state in pipe network, this paper adopt center implicit difference method to solve these equations. 根据气体在管网系统中动态流动的连续性方程、运动方程以及状态方程,采用中心隐式差分法进行求解。
The program about implicit difference method was compiled, and the numerical simulation procession that takes into account mechanic index influenced by dewatering was carried through. 编写了隐式差分格式的计算程序,进行了考虑土的力学指标随疏排水过程变化条件下的数值模拟计算;
An Implicit Difference Method for Solving Incompressible Navier-Stokes Equations 数值求解不可压Navier-Stokes方程的隐式算法
Correlation Analysis of Characteristic Method and Implicit Difference Method for Fluid Transient in Long Distance Pipeline 水力瞬变特征线法和隐式差分法的对比分析
The fully implicit difference method was employed, and the latent heat release was handled with the increment of frozen water fraction. 数值模拟计算采用全隐格式差分方法,用水分冻结量的增量处理相变潜热。
The explicit Lagrangian method is a new numerical analytical method different from the implicit difference method. 显式拉格朗日差分法是相对于隐式差分法的一种新型数值分析方法。
Based on fluid-solid coupled and solute transportation theory in porous media, multi-field mathematical model has been developed for describing leachate transportation, and the numerical model is given by applying P-R implicit finite difference method. 基于多孔介质流一固耦合及溶质运移理论,建立了垃圾渗滤液运移过程的多场耦合数学模型,并采用P-R隐式差分方法,给出了耦合模型的数值格式。
Numerical method for computer solution are used for fluid flow in long distance pipeline, such as characteristics method, implicit difference method and so on. 液体在长输管道内不稳定流动问题可以采用各种数直解法并借助计算机来进行处理,如特征线法、隐式差分法等。
In this paper the growth rate and the eigenfunctions are calculated for the resistive helical instability of current-carrying plasma column with free boundary, using a two-step implicit difference method. 本文导出了自由边界载流等离子体柱的电阻螺旋模所满足的方程和定解条件,采用了对时间步长的两步隐式差分法进行数值求解。
A high-order compact implicit difference method for the unsteady convection-diffusion equation with source term 含源项非定常对流扩散方程的高精度紧致隐式差分方法
Heat transfer characteristics and flow behaviors of the elliptic tube with different axis ratio a/ b are numerically studied via an implicit finite difference method. 利用隐式有限差分法,对横掠不同轴径比a/b情况下的椭圆管换热及流动特性进行了研究。
Aimed at the heat transfer problem of composite walls with heat preservation layer, and based on analyzing their compositions and heat transfer characteristics, the mathematic model was set up and the solutions of heat transfer are obtained with the implicit finite difference method. 针对复合保温墙体传热问题,在分析其组成及传热特点的基础上,建立数学模型,并采用有限差分隐式格式求解。
To show the accuracy of the full implicit finite difference method, the water cut curves from simulation of water flooding and polymer flooding are compared with those by using commercial reservoir simulation software. 将水驱与聚合物驱仿真获得的含水率曲线与油藏数值模拟软件的结果相比较,表明了全隐式差分方法的准确性。
A full implicit finite difference method is presented for the polymer flooding model. 对于支配方程,提出了聚合物驱模型的全隐式有限差分方法。
To generate diffusion result efficiently, we propose an implicit difference method with high accuracy to solve diffusion equation. 为了高效地生成扩散图像,我们还提出了一种高精度的隐式差分数值方法来求解墨水扩散方程。
This paper uses a continuous region to depict exercise strategies, and transforms the option pricing problem into a partial differential equation with free boundary, and uses implicit finite difference method to determine the executives 'optimal exercise strategy and options' prices. 本文采用连续区域来刻画经理人的执行策略,将期权定价问题转化为偏微分方程自由边界问题,并利用隐式有限差分方法来确定经理人的最优执行策略及期权的价格。
The transient gas flow models were established and solved by fluid network theory. Compared to the conventional numerical methods ( implicit difference method and character line method), the maximum deviation was about 1 percent among the methods. 通过建立管道瞬态流动模型,首次采用流体网络理论对模型进行求解,并和传统的数值解法(隐式差分法和特征线法)进行对比,得到两者最大偏差约为1%。
Ideal bed temperature is solved out by the program of implicit difference method. The thickness of each zone and migration rate are also figured out and their thermal state characteristics are analyzed, Non-contact infrared temperature scanner is used in the side-plate vertical temperature measurement of pallet. 通过编制计算机程序采用隐式差分法求解出理想条件下的料层温度,并计算出各带的厚度和迁移速度,分析了它们的热状态特征。