There are three main research methods in natural ventilation: simple theory analyse method, experimental method and numerical simulation method.
目前自然通风主要有三种研究方法：简单的理论分析法、实验法和数值模拟法。
Mathematical model and numerical methods of stress field simulation during foundry process are studied, future research emphasises are pointed out.
分析了应力场数值模拟采用的数理模型和数值方法，指出了存在的问题，明确了今后的研究重点。
It is of great significance to the research of columnar-to-equiaxed transition (CET), and numerical simulation is one of the valid methods.
柱状晶向等轴晶转变(CET)的研究具有重要意义，数值模拟是其有效的研究方法之一。
The foreign countries have utilized the methods of wind tunnel test and numerical flow simulation, and carried out the series research on this problem.
国外利用风洞模型试验和流场数值模拟计算的方法，对此问题进行了系列化的研究。
It provides significant basic data and research methods such as adsorption phase equilibrium simulation and oil-gas reservoir numerical simulation for study of adsorption processes in porous media.
此项研究工作将为开展多孔介质中吸附作用的各种研究(如吸附平衡相态模拟和油气藏数值模拟研究等)提供重要的基础数据和研究方法。
The methods of research are numerical analysis and approximate analytic solution.
研究方法有数值法和近似解两种。
In present research on fracture dynamic problems, Laplace or integral transformation was generally used, and numerical methods had to be adopted to solve the loop integral.
在现有断裂动力学问题文献中，一般采用拉氏变换与积分变换方法，得到的回路积分最后还需借助于数值方法求解。
On the base of above research results, suitable numerical simulation methods for the cutting process of linear shaped charge with three different ways of detonation are brought forward.
在此基础上进一步提出了三种起爆方式下线性成型装药切割目标的恰当的数值模拟方法。
The main research methods include empirical formula, physical simulation, numerical simulation and field measurement.
主要的研究方法有经验公式法、物理模拟、数值模拟和现场实测。
In the aspect of soil materials, research methods are surface wave test, shaking table test and numerical simulation.
在土体材料方面，研究方法有面波测试、振动台试验及数值模拟。
Research on hillslope hydrological processes is reviewed including mathematical models structure, model testing, numerical solution, and methods for model simplification.
本文对坡地水文过程的数学模型、实验检验、数值解方法以及简化途径等各环节研究作了分析评述。
Phase field method is the one of popular numerical simulation methods. Recently, it has been become a research focus in solidification field.
相场法是凝固组织模拟中最有潜力的方法之一，近年来已成为凝固领域研究的热点。
It is pointed that numerical values of rock mechanics parameters acquired by any methods must accord with the criterions. 2 Research on mathematical statistic methods of rock mechanics parameters.
指出了不论使用何种方法得到的岩石力学参数值，都必须符合各行业工程规范标准对力学参数取值方法和范围的规定。2、力学参数数理统计方法的研究。
The numerical methods and some conclusions from the research work are useful for the design and construction of analogous rock engineering.
其计算方法和一些结论可为国内的相关工程设计和建设提供借鉴。
The numerical methods and some conclusions from the research work are useful for the design and construction of analogous rock engineering.
其计算方法和一些结论可为国内的相关工程设计和建设提供借鉴。
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