非均匀水流 non-uniform current(2)   non-uniform current      Numerical Simulation of Wave Propagation on Non-Uniform Current in Curvilinear Coordinates      曲线坐标系下非均匀水流中波浪传播的数值模拟 短句来源      In curvilinear coordinates, a numerical simulation model for wave propagation on non-uniform current in water of slowly varying topography was presented with employing self-adaptive grids method.      利用自适应网格技术 ,建立了曲线坐标系下缓变水深水域非均匀水流中波浪传播的数值模拟模型 . 短句来源   “非均匀水流”译为未确定词的双语例句      WAVE PROPAGATION ON NON-UNIFORM CURRENTS      非均匀水流水域波浪的传播变形 短句来源      By assuming that the vortex of current is small and that the current velocity is constant along vertical direction, a mild-slope equation for wave propagation on non-uniform flow is deduced from basic hydrodynamics equations and the terms of  2 hh and ( hh) 2 are included in the equation.      从流体力学基本方程出发 ,假定水流的涡量和垂向流速分量为小量 ,推导出考虑非均匀水流的推广的缓坡方程 ,该方程中包含了 2hh项和 ( hh) 2项。 短句来源      Thus, an extended mild-slope equation is obtained, in which the effects of refraction, diffraction, reflection, current, bottom friction, wind input and wave nonlinearity are considered comprehensively.      经过上述推广后 ,得到综合考虑折射、绕射、反射、非均匀水流、底摩擦损耗、风能输入及波浪非线性的推广的缓坡方程。 短句来源      The governing equation was described by the time dependent parabolic equation which is deduced from the elliptic type of mild slope equation on non-uniform, it avoids the drawback to common parabolic form of mild slope equation.      将椭圆型非均匀水流中波浪传播的联合折射 -绕射方程化为依赖时间变化的抛物型方程 ,并以此作为控制方程 ,克服了一般抛物近似方法的缺点 ; 短句来源   相似匹配句对      WAVE PROPAGATION ON NON-UNIFORM CURRENTS      非均匀水流水域波浪的传播变形 短句来源      The Study of Nonuniform Sediment Transport Capacity      非均匀沙水流挟沙力研究 短句来源      ON SPRAY RANGE OF WATER FLOW IN SPRINKLER IRRIGATION      喷灌水流射程 短句来源      NONUNIFORM DECIMAL CRYPTOSYSTEM      非均匀进制密码体制 短句来源      ②Slow Current;      (2 )水流缓慢 ; 短句来源 查询“非均匀水流”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   non-uniform current A mechanism of the effect of non-uniform current on the spectrum of short wind waves 例句来源       A mechanism is suggested in this paper concerning the effect of non-uniform current on the spectrum of short wind waves. 例句来源       According to this mechanism, a non-uniform current brings changes to the breaking criteria of short wind waves through modulating the surface drift, and hence enhances or weakens wave breaking. 例句来源       Electromagnetic fields of a thin circula loop antenna above a (un)grounded multi-layered chiral slabs: The non-uniform current e 例句来源       An oblique incident field in its general form is considered in the formulation of the non-uniform current distributions. 例句来源       更多                    On the basis of the ordinary method for calculating the screw performance and pressure distributions on screw blades, this paper presents a simplified method for estimating the extent of cavitation on screw blades operating in nonuniform flow The simplified calculation method can be used to estimate the extent of cavitation appearing on screw blades in the light of the geometry of the screw, the wake distribution and the operating conditions. Also it can give the relation between the arising of cavitation a...             本文在常用的螺旋桨水动力性能和叶片切面压力分布计算方法的基础上,提出了一个估算螺旋桨在径向非均匀水流中叶片上出现空泡范围的简单方法。此法可根据桨叶的几何形状,伴流分布和螺旋桨工况估计桨叶出现空泡的范围,也可给出出现空泡与螺旋桨的几何要素例如切面的拱度、厚度分布和冲角等之间的关系。这样,我们就能仔细地分折螺旋桨叶片上发生空泡的情况,提出改进螺旋桨空泡性能的措施。针对一条船舶的螺旋桨,用本方法进行了计算,计算结果与用空泡筒模型试验所得的结果相当一致。 文摘来源          In accordance with the characteristic of kinetic factor in estuary a theoretical system which consists of three primary equations, two subsidiary equations and one requirement conditions for the stability of boundary is estab- lished on the basis of kinetic law in muddy estuary. We have presented in this paper three methods of model tests to combine the characteristics of practice problems and data probably provided and have also used these tests to solve the problems in engineering.(1) Method of theoretica...             泥质河口泥沙问题的数学模型是:以泥质冲积河流动力学规律为基础,针对河口动力因素的特点所建立的包括三个主要方程式,两个辅助方程和一个床面稳定边界条件的理论体系。在解工程泥沙问题中,结合实际问题的性质和可能提供资料的情况,提出和引用以下三种模型试验方法。(一)理论模型法:针对非恒定非均匀水流(包括分岔河流及波浪影响)的非平衡挟沙问题。模型结合水力泥沙因素的边界条件,联解五个方程式。在水力计算中,采用矩形模化断面和不等距偏心插值的特征线差分格式。在泥沙计算中。利用水力规律,并在建立泥沙“运载”因素概念基础上,进行挟沙过程和河床演变的计算。(二)变通模型法(一):在难于确切提供挟沙过程边界条件的情况下,针对一些水力泥沙因素变化较缓慢的河口地区,可以采用变通模型法(一),在这一近似模型法中,采用平衡挟沙的观点,因而不再需要提供挟沙过程的边界条件,在模型试验中,可以不用方程式(5),只需联解四个方程式(1)、(2)、(3)、(4)。(三)变通模型法(二)(或称“半潮平均”模型法):方法的实质是将变通模型法(一)中的泥沙时间步长△T加大,使之接近潮段(涨潮段或落潮段)历时,因此在模型试验中,可以将方程(1)、(... 文摘来源          By assuming that the vortex of current is small and that the current velocity is constant along vertical direction, a mild-slope equation for wave propagation on non-uniform flow is deduced from basic hydrodynamics equations and the terms of  2 hh and ( hh) 2 are included in the equation. The terms describing the effects of bottom friction, wind input and wave nonlinearity are also introduced into the equation. The wind input func...             从流体力学基本方程出发 ,假定水流的涡量和垂向流速分量为小量 ,推导出考虑非均匀水流的推广的缓坡方程 ,该方程中包含了 2hh项和 ( hh) 2项。在方程中引入底摩擦项、风能输入项和非线性项 ,其中风能输入项的推导考虑了风浪与涌浪的区别 ,风浪情况依据青岛海洋大学的风浪成长经验关系 ,涌浪情况依据 Snyder等人的观测结果。经过上述推广后 ,得到综合考虑折射、绕射、反射、非均匀水流、底摩擦损耗、风能输入及波浪非线性的推广的缓坡方程。 文摘来源   << 更多相关文摘         相关查询: 水流 非均匀 水流调节装置 水流边线 水流分离区 非均匀pfn 水流调节 水流能量 水流数据 水流资料 水流硬化 非均匀因子  对查询结果不满意

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