perfect gas

• The balanceable piston theory and perfect gas model are used as building block to design tunnel , and the resulting tunnel can generate uniform flow , which can provide long experimental time with high mach number , given enthalpy and reynolds number , thus , the scramjet and ramjet aircraft can be studied in this tunnel
  采用理想的平衡活塞运行理论和完全气体模型,该风洞可以产生高马赫数、一定焓值和re数、实验时间较长的均匀流动,满足超燃、亚燃现象的研究。
• A parallel computing software is established independently . this software is a cell - centered finite - volume , structured grid , multi - block code which solves the equations governing inviscid and viscous flow of a calorically perfect gas or of an arbitrary mixture of thermally perfect gas undergoing non - equilibrium chemical reactions
  通过简单的参数控制，该程序既可计算二维、轴又巾弥和三维量热完全气体，也可计算化判卜平衡流;既可计算无粘流，也可计算粘性流。
• The results of analysis show that the shock detached distance computed by two temperature model or three temperature compare well with the experiment data , and the heat transfer rate is highest for one temperature model with non - catalytic wall , and lowest for equilibrium gas model , and the heat transfer rate for perfect gas model is between the non - catalytic wall and fully catalytic wall
  结果表明：采用两温度（或三温度）非平衡气体模型计算的激波脱体距离更接近实验情况；采用平衡气体模型计算的壁面热流最高，一温度非平衡气体模型完全非催化的壁面热流最低，而完全气体模型的壁面热流在两者之间。
• The flowfields around the reentry blunt body are simulated numerically by solving the navier - stokes with the various thermal and chemical model , such as perfect gas model , vibrational excitation model , equilibrium gas model , and the non - equilibrium gas model of one temperature , two temperature and three temperature
  本文采用完全气体模型、振动激发气体模型、平衡气体模型、一温度非平衡气体模型、两温度非平衡气体模型和三温度非平衡气体模型进行了钝体高超声速绕流流场的数值计算。
• In chapter 2 , the meteorological knowledge , data and the methods of the data processing , related to the study on the atmospheric loads , are simply presented . the model for the perfect gas constant , describes by the relative moisture , is developed . the influences of the variation in the vapor component in the atmosphere on the perfect gas constant are evaluated by using the changing characteristics of the temperature on the surface , its spatial gradient and the barometric pressure
  第二章：简要介绍大气负荷研究所需的气象科学知识、资料及其数据处理方法；建立相对湿度表示的大气比气体常数模型，利用地面温度和空间垂直温度梯度、压力变化的规律估算大气水汽组分变化对比气体常数的影响；对中国及邻区的地面气压记录进行了预处理和网格化