2 . the 3 - d unsteady euler equations are derived . and the computational program based on these equations is developed to adapt for the calculations of flapping wing 2 、推导了非定常情况下的三维欧拉方程,发展了三维非定常欧拉方程计算程序,使之适应于扑动翼计算的需要。
A muscl type cell - centered finite - volume scheme is presented for solving the 3 - d time - dependent euler equations cast in an arbitrary lagrangian - eulerian ( ale ) framework 构造了一种muscl ( monotonicupwindschemesforconservationlaws )类型有限体积格心( cellcentered )格式对方程进行离散。
The three - dimensional ( 3d ) euler equations are applied to the study of numerical simulation of chemical non - equilibrium oblique detonation wave standing on an accelerating projectile with attack angle 摘要采用三维非定常化学反应控制方程组对驻定在带攻角高速飞行弹丸上的斜爆轰波流场进行了数值模拟。
First , hydrogen - air scramjet combustor is numerically simulated and analyzed by solving the general one - dimensional unsteady euler equation . second , compressible , reacting , turbulent flow solutions are obtained 通过求解广义一维非定常euler方程,数值模拟了氢燃料的燃烧室,并和实验结果进行了比较和分析。
With introduction of pseudo compressibility , two - dimensional euler equations are derived . referring to compressible method , central finite volume scheme is employed to develop a computational code 参照可压缩流动计算的中心格式有限体积法完成了拟压缩方法二维定常不可压euler方程的推导和流动计算程序的编写。
We could construct arbitrary solutions to the euler equation by these modes with very small computational expense and decreased unknowns and give a quick estimation of objective function 本文使用的流场计算方法是根据patricka . legresley提出的基于正交分解( pod - properorthogonaldecomposition )的模态方法的基础上改进的。
The full potential equation is solved by the time - accurate approximate factorization algorithm and internal newton iterations , and the euler equation by the finite - volume resolution scheme and dual - time stepping 对全位势方程采用精确隐式近似因式分解差分格式、牛顿内迭代算法。对euler方程采用有限体积法和双时间推进。
In chapter two , sph is comment ed synoptically , its fundamentals is reviewed , and sph formulae of euler equations are derived . in chapter five , several fundamental problems occurring in sph implementation are discussed detailedly , e . g 文中第二章在概括性地予以评述之后,系统地介绍了sph方法的基本原理,推导出欧拉方程的sph形式。
The chimera embedding technique is presented for the external store separation configuration . it divides the whole region into many subdomains . euler equations are used for every subregion with the finite volume method 本文采用嵌套网格技术,将飞机投放外挂物的模型分成多个计算子域,对飞机投放外挂物的复杂外形进行了分区迭代求解。
In chapter 5 , we first recall some results of the existence and regularity about the minimizers . secondly , we study the euler equations about the variationals and the approximate problems about the minimizers 第五章我们先阐述关于能量极小映射的相关结果;其次研究能量极小映射的euler方程;之后建立用调和函数逼近能量极小映射之结论。