1) singularities raised
奇点上置
1.
The effects of singularities raised above the free surface in the boundary integral methodof the ship wavernaking problem are discussed by means of a formula derived from Fourieranalysis and numerical calculation.
利用由Ｆｏｕｒｉｅｒ分析得到以公式及相应的数值计算，对船波问题的边界积分方法中自由表面奇点上置的影响进行了讨论，认为奇点上置位置的适当选取将有助于改善数值计算中的色散误差并降低其对于网格变化的敏感程度。
2) singularity distribution method
奇点配置法
1.
Based on the potential fluid theory,the expression for calculating the added mass are deduced by singularity distribution method using basic solutions for space point sources(sinks)and dipoles under three.
根据势流理论,采用奇点配置法利用空间点源(汇)及偶极子基本解推导了三维情形下结构振动诱导流场附加质量的计算式。
2.
On the basis of the dipole configuration method, a singularity distribution method of distributing sources/sinks and dipoles on interfaces of the structure and fluid was developed to solve the problem of fluid flow induced by the vibration of common structures, such as columns and columns with fins, deduce the expression of kinetic energy of the fluid flow, and obtain.
将大型柔性结构低速振动诱导流体流场的问题,归结为无粘性不可压缩无旋流动平面问题· 在偶极子配置法基础上,发展了一种在结构和流体接触面上混合配置源汇和偶极子的奇点配置法,能够计算翼型、柱型等结构在流体中低速振动时诱导的流体流场并推导出流场的动能表达式,最终得到流体附加质量· 给出了几个具有解析解的算例验证了此方法的可靠性·
3) top dead center position
上死点位置
4) top dead center position
上止点位置
5) singular point
奇点
1.
The number of limit cycles of generalized Liénard system surrounding multiple singular points;
包围多个奇点的广义Liénard系统的极限环的个数
2.
Discussion on functional sampling near limit point of listable singular points;
有关可列个奇点的极限点附近函数取值情况的讨论
3.
On the Existence and Uniqueness of Limit Cycles for Lienard-Type Eqations with Multiple Singular Points;
具多个奇点Lienard型方程极限环的存在唯一性
6) Odd point
奇点
1.
Aiming at the problem of the odd point in the calculation of rotors torsional vibration characteristics by using the improved Riccati method, this paper presents a new viewpoint about how to confirm and remove the lost root and the added root of equation.
本文针对采用改进型Riccati方法计算轴系扭振特性中所出现的奇点问题,提出还需检测判断剩余量与振型,从而进一步确定和排除方程“漏根”和“增根”的方法。
2.
The odd point of plane differential systems =-y+δx+axy+my 2+ly 2n+1 , =G(x), is studied.
通过研究微分系统x· =-y+δx+axy +my2 +ly2n+1,y=· G(x)的奇点 ,借助比较定理 ,将该方程与其对称的方程进行比较 ,并通过分析散度和变量代换 ,得到了该系统极限环不存在的充分条
补充资料：Hirzebruch奇点
hirzebruch奇点就是用方程z^d=x^a * y^b定义的曲面奇点。 大数学家hirzebruch第一个系统研究了这种奇点。
这类奇点和连分数有着密切联系。它是代数几何－－特别是代数曲面中的一类重要研究对象。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条