1)Isentropic potential vorticity等熵位涡
1.The results show that the centers of rainstorm are in the high value area of convective available potential energy and vertical helicity,and in the high value area of isentropic potential vorticity on 325 K.结果表明,远距离台风暴雨区位于对流有效位能高值舌区与低层垂直螺旋度大值带重合的区域及325 K等熵位涡的高值区域。
2.Based on the theory of isentropic potential vorticity(IPV),a diagnostic analysis of a continuous rain process in the east of Northwest China in the second ten-day of May in 2005 was carried out.应用等熵位涡原理,对2005年5月中旬西北地区东部的一次连阴雨过程进行了诊断分析。
3.The climatological mean sources and evolutions of isentropic potential vorticity(IPV) during Meiyu period are studied.分析了气候平均意义下梅雨前期及期间东亚地区等熵位涡(isentropic potential vorticity,简称IPV)的源区和演变过程。
英文短句/例句
1.Analysis on Isentropic Potential Vorticity for the Snow Calamity in South China and the Stratospheric Polar Vortex in 20082008年中国南方雪灾与平流层极涡异常的等熵位涡分析
2.Numerical Simulation of the Evolvement of Potential Vorticity of Landfall Tropical Cyclone on Isentropic Surface登陆台风等熵面位涡演变的数值模拟研究
3.Numerical Simulation of the Effect of Subtropical Anticyclone on the Evolvement of Potential Vorticity of Landfall Typhoon on Isentropic Surface副热带高压对登陆台风等熵面位涡演变影响的数值模拟研究
4.A Higher-Order Potential Vorticity Inversion Algorithm and Its Application, PartⅠ: Potential Vorticity Inversion一类高阶位涡反演的算法及其应用Ⅰ:位涡反演
5.A Diagnostic Analysis of PV and MPV on the Heavy Rain Caused by Typhoon Khanun对一次台风暴雨的位涡与湿位涡诊断分析
6.Calculation of Metallic Compression Isentropes and Study on Isentropic Compression Experiments by Detonation Driving;金属等熵压缩线计算及爆轰加载等熵压缩实验研究
7.Does liquid level ever drop below volute top?水位是否总是位于涡流顶部?
8.Local Strong Solutions of Navier-Stokes-Poisson Equations for Isentropic Compressible Fluids等熵可压Navier-Stokes-Poisson方程局部强解适定性
9.Compression Isentropes of Copper and Aluminum under 40 GPa40GPa压力范围内铜和铝的准等熵压缩线
10.Rank entropy-based adaptive particle swarm optimization algorithm基于等级熵的自适应粒子群优化算法
11.Solutions of functional separation of variables to the isothermal compressible Navier-Stokes equations in one dimension一维等熵Navier-Stokes方程的泛函分离变量解
12.The Global Entropy Solutions to the Cauchy Problem of the Isentropic Relativistic Euler Equations with a Class of Large Initial Data;等熵相对论Euler方程组带一类大初值的Cauchy问题的整体熵解
13.Regularity of the Weak Entropy Solutions to the Cauchy Problem for γ=3 Isentropic Gas Dynamics Equations;γ=3等熵气体动力学方程组Cauchy问题弱熵解的正则性
14.A Higher-order Potential Vorticity Inversion Algorithm and Its Application, PartⅡ: Piecewise Inversion一类高阶位涡反演的算法及其应用Ⅱ:分部位涡反演
15.Global Existence Behavior of Solutions for Isentropic and Isothermal Model System等熵等温模型方程组的解的整体存在性
16.a Paisley tie, dressing-gown, etc佩斯利涡旋花纹领带、 晨衣等.
17.The Color-Magnitude Relation of Late-Type Galaxies and their Disks晚型旋涡星系及其盘的颜色星等关系
18.eddy-current displacement vibration amplitude measuring instrument电涡流式位移振幅测量仪
相关短句/例句
wet isentropic potential voticity湿等熵位涡
3)isoentropic potential vorticity map等熵位涡图
4)IPV(Isentropic potential vorticity)analysis等熵位涡分析
5)Isentropic surface potential vorticity等熵面位势涡度
6)isentropic enthalpydrop of turbine涡轮等熵焓降
延伸阅读
等熵流动 流体系统每一部分的熵在运动过程中都保持不变的一种流动。等熵流动要求每个流体质点的熵在流动过程中保持不变，即 ，式中S为熵；v为速度；t为时间；为随体导数;墷为梯度算符。在等熵流动中，虽然每个流体质点的熵保持不变，但不同流体质点的熵可以有不同的值，因而整个流场内的熵并非常数。如果流场在初始时刻是匀熵的（即各流体质点的熵相同），则等熵流动将使流场在任何时刻都是匀熵的,即S等于常数。有人把这种运动也称为等熵流动。 可逆的绝热流动都是等熵流动，不可逆的绝热流动则是不等熵的,由热力学第二定律可知熵总是增加的,即。用熵表示的能量方程为： ，式中ρ为密度；T为热力学温度；k为热导率；ф为粘性耗损项。因此,要保持,必须使热传导项与粘性耗损项正好抵消，这在实际上是很难实现的。因此，有时把等熵流动和可逆的绝热流动看成是等同的。从能量方程还可看出，忽略粘性和热传导的流体连续运动一定也是等熵流动。 对于比热为常数的完全气体，熵表为： ，式中 CV为定容比热；为气体比热比,Cp为定压比热；p为压力；C为常数。 从等熵方程 可得出。它同连续性方程和运动方程一起，构成了经典气体动力学的封闭运动方程组。 参考书目 H.W.李普曼、A.罗什柯合著,时爱民等译:《气体动力学基础》,机械工业出版社,北京,1981。(H.W.Liepmann and A.Roshko,Elements of Gasdynamics,John Wiley & Sons,New York,1957.)
