1) higher order approximation parabolic mild slope equation
高阶近似抛物缓坡方程
1.
A random wave model combining wave refraction and diffraction has been developed,which is based on the higher order approximation parabolic mild slope equation and uses the linear superposition theory.
文章基于高阶近似抛物缓坡方程 ,利用线性叠加原理建立了自然地形条件下综合考虑水波折射、绕射的随机波模型。
2) parabolic mild-slope equation
抛物型缓坡方程
1.
A parabolic mild-slope equation for wind energy input;
考虑风能输入的抛物型缓坡方程
2.
On the basis of the parabolic mild-slope equation for irregular water waves and two wave energy dissipation factors due to breaking wave effect,the distribution of breaking wave heights has been numerically simulated,and the numerical results have been analyzed and validated by experimental data.
基于近岸不规则波浪传播的抛物型缓坡方程和两类波浪破碎能量损耗因子,对近岸波浪破碎区不规则波浪的波高分布进行了数值模拟,并结合实验结果对数值模拟结果进行了验证分析,结果表明采用两类波浪破碎能量损耗因子所模拟的破碎区波高与实测值均吻合良好,波浪破碎能量损耗因子及波浪破碎指标对破碎区波浪波高分布影响较明显。
3.
A new method for the solution of wave radiation stresses is proposed by linking wave radiation stresses with the variables in the parabolic mild-slope equation.
将波浪辐射应力与抛物型缓坡方程中的待求变量联系起来,提出了一种计算辐射应力的新方法,并用有限差分法对控制方程进行了数值求解。
4) parabolic mild slope equation
抛物型缓坡方程
1.
Numerical simulation of wave current field in coastal zone based on parabolic mild slope equation;
基于抛物型缓坡方程模拟近岸波流场
2.
Based on parabolic mild slope equation for wave propagating in mild slope zones,the near-shore currents model,as well as model of pollutants movement in near-shore water waves and currents,pollutants movement processes in water waves and long-shore currents,which are induc.
结合近岸波浪传播的抛物型缓坡方程、近岸波流场数学模型及污染物在近岸波流作用下运动的数学模型,对近岸斜向入射波浪破碎所产生的沿岸波流场中污染物的分布运动过程进行了数值模拟,并结合实验结果对数值模拟结果进行了分析验证。
3.
Near-shore currents induced by the irregular water waves and their breaking were numerically simulated based,on the parabolic mild slope equation and near-shore current model.
在不规则波浪场的模拟中,采用JONSWAP波浪谱对入射单向不规则波浪要素按等分频率法进行离散,应用考虑波浪不规则性和破碎效应的抛物型缓坡方程对波浪场进行数值模拟,并基于抛物型缓坡方程中的波浪势函数等参数计算波浪辐射应力,以波浪辐射应力为主要动力因素基于近岸流数学模型对近岸波浪破碎所产生的近岸流场进行数值模拟,并对数值模拟结果进行了验证。
5) parabolic equation approximation
抛物方程近似
1.
In this thesis, parabolic equation approximation, FOR3D, is used .
本论文利用抛物方程近似,FOR3D程序来研究内波对声传播的影响。
6) parabolic similar equation
抛物近似方程
1.
The transmission loss patterns of the electromagnetic field was studied by solving the parabolic similar equation which is gotten from the Helmholtz equation similarly.
运用电磁波场基本理论,推导了海气界面的电磁波场散射方程;通过对由Helmholtz方程近似得到的抛物近似方程的求解,研究了海气界面上电磁波的传播损耗模式,探讨了电磁波在海气界面的蒸发波导中的传播模型;采用双尺度模型,并根据海面微尺度波谱和Bragg散射理论建立了海浪谱与雷达散射截面的关系。
补充资料:抛物型偏微分方程
抛物型偏微分方程 parabolic type,partial differential equation of 偏微分方程的一类。最典型的是热传导方程 (a>0) (1)基本解是点热源的影响函数。若在t=0时在(ξ,η,ζ)处给定单位点热源,即u0(x0,y0,z0,0)=δ(ξ,η,ζ)(δ为狄拉克函数),则当t>0时便引起在R3的温度分布,这就是基本解。用傅里叶变换可得到它的表达式 热传导方程初值问题的解可用基本解叠加而成,即的解为 极值原理:一个内部有热源的传导过程,它的最低温度一定在边界上或初始时刻达到。更强的结论是 :如果t=T时在Ω内某一点达到最低温度 ,则在这个时刻以前(t<T时)u≡常数 ;又:若最低温度在t=T时边界¶Ω上某点P达到,则在这点上|P,Τ<0(n为外法线方向)。 |
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参考词条