本文關(guān)鍵詞：一維不恒定流泥沙數(shù)學(xué)模型研究，由筆耕文化傳播整理發(fā)布。

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維不恒定流

     Application of the Method of Fractional Steps in Computation of Two Dimensional Unsteady Flow

     分步法在二維不恒定流計(jì)算中的應(yīng)用

短句來源

     Study and application of one-dimensional model for river network with unsteady flow

     一維不恒定流河網(wǎng)數(shù)學(xué)模型研究與應(yīng)用

短句來源

     Modeling of sediment transport in unsteady flow

     一維不恒定流泥沙數(shù)學(xué)模型研究

短句來源

     Real-time flood forecasting modeling coupling between 1D unsteady channel flow and Kalman filter

     一維不恒定流與卡爾曼濾波耦合的河道實(shí)時(shí)洪水預(yù)報(bào)模型

短句來源

     The basic equations for flow and sediment transport are split apart into three sets of comment equation,that is,convection,diffusion and propagation. It is based on triangle grids,uses body conservation to resolve successive equation and characteristic method to resolve convection equation and finite difference method to resolve diffusion and propagation equation. Many examinations show that the method is uncomplicated and has higher precision.

     應(yīng)用破開算子法原理，將平面二維不恒定流及泥沙擴(kuò)散基本方程按不同的物理意義破成對流、擴(kuò)散和傳播三個(gè)子方程．基于三角形網(wǎng)格劃分，，利用有限體積守恒格式求解連續(xù)方程，用特征線方法求解對流方程并采用有限差分法求解擴(kuò)散和傳播方程，經(jīng)數(shù)值實(shí)驗(yàn)及實(shí)際工程驗(yàn)證，該算法計(jì)算簡便、邊界符合良好，數(shù)值模擬精度也較高．

短句來源

     A Kind of Implicit Characteristic-Difference Schemes for One-dimensional Unsteady Flow

     一維不恒定流方程組的一種隱式特征差分格式

短句來源

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     Modeling of sediment transport in unsteady flow

     一維不恒定流泥沙數(shù)學(xué)模型研究

短句來源

     MYBC-A Program Package for the Calculation of One-dimensional Unsteady Flow in Open Channels

     明渠一維不恒定流計(jì)算程序包MYBC

短句來源

     Study on universal software for calculation of 1-Dunsteady flow in Channel network

     通用一維河網(wǎng)不恒定流軟件的研究

短句來源

     ANALYSIS OF UNSTEADY FLOW IN BORDER IRRIGATION

     畦灌的不恒定流分析

短句來源

     Conservative Difference Schemes for 1-D Unsteady Flow Computation in Natural Rivers

     天然河道一維不恒定流計(jì)算的守恒格式

短句來源

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  dimensional unsteady flow

The theory of a lifting surface is used to construct a model of three-dimensional unsteady flow past a pair of flapping wings in the regime of normal hovering flight.

The problem of two-dimensional unsteady flow of a viscous incompressible fluid in a sector-like domain is considered.

In this paper, we propose a numerical method of calculating a three-dimensional unsteady flow past a thin wing in the presence of flow suction on the wing surface through a point hole or a narrow slot.

In the non-inertial coordinates attached to the model wing, the two-dimensional unsteady flow field triggered by the motion of the model wing, similar to the flapping of the insect wings, was numerically simulated.

In this paper, a study of nonhomentropic, spherical, cylindrical and one-dimensional unsteady flow of a perfectly conducting gas has been made by taking Lagrange's equations of motion.

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A method is presented enabling the computation of local scouring downstream of stilling basin. The simultaneous equations consist of motion and continuity, equations for flow equation for bed-load transport (Einstein equation) and continuity equation for the bed material. In computation, the method of characteristics considering large scale vortex is used. Experiments with gravel particles (as bed-load) are selected to calibrate the mathematical model. Verification analysis shows that this model gives good approximation...

A method is presented enabling the computation of local scouring downstream of stilling basin. The simultaneous equations consist of motion and continuity, equations for flow equation for bed-load transport (Einstein equation) and continuity equation for the bed material. In computation, the method of characteristics considering large scale vortex is used. Experiments with gravel particles (as bed-load) are selected to calibrate the mathematical model. Verification analysis shows that this model gives good approximation for loal scouring.

本文給出了一種計(jì)算水躍消力池下游局部沖刷的數(shù)值方法。計(jì)算中采用特征線法求解一維不恒定流的運(yùn)動方程、連續(xù)方程和泥沙輸送方程,得到了水躍消力池后水流和沖坑發(fā)展的規(guī)律。從計(jì)算結(jié)果與試驗(yàn)數(shù)據(jù)對比看,此方法是可行的。

From the viewpoint of numerical computation, various forms of 1-D unsteady open channel flow equations and conservativity of their differences schemes are analysed. Based on the discussion, the authors summarize the approaches and principles for constructing conservative difference schemes for the equations, and propose practical techniques such that conservation can be achieved exactly or approximatley.

本文從數(shù)值計(jì)算的角度分析和討論了天然河道一維不恒定流方程組的各種形式及其差分格式的守恒性。據(jù)此,本文總結(jié)了建立守恒差分格式的途徑和應(yīng)遵循的原則,并就差分格式如何達(dá)到準(zhǔn)確或近似守恒提出了實(shí)際的處理方法。

In this paper, a 1-D unsteady flow model and a quasi 2-D flow model for simulating flood flow for storage and detention basins are developed. Flow exchanges between a river reach and adjacent storage cells, discharge exchanges among connected storage cells in an inundated plain, and the compatibility conditions representing flow links between channels and a flood regulation region are all described in detail. A case study is given.

系統(tǒng)地研究了描述洪水在蓄滯洪區(qū)內(nèi)演進(jìn)過程的一維不恒定流模型和二維流模型，突出對河流與沿河堤外洼地間水流交換的描述和對淹沒區(qū)各蓄水單元間水流交換的描述及河流與調(diào)蓄區(qū)水流連接的描述．最后簡要介紹了實(shí)例．

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  本文關(guān)鍵詞：一維不恒定流泥沙數(shù)學(xué)模型研究，由筆耕文化傳播整理發(fā)布。