人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
23期
60-63
,共4页
运动波%三角差分%演算方法%马斯京根法
運動波%三角差分%縯算方法%馬斯京根法
운동파%삼각차분%연산방법%마사경근법
kinematical wave%triangle differential%algorithm method%Maskingum method
在对运动波方程、数值解法及马斯京根-康吉演算法进行介绍的基础上，提出了运动波三角差分演算法，并给出了该方法的具体差分格式及推导过程。以长江万县至宜昌河段和雅砻江泸宁至打罗河段实测流量数据为例，利用马斯京根-康吉演算法和三角差分法分别进行了演算，并对比和分析了计算结果。结果表明，三角差分法具有预见期、演算方程简单、参数率定容易、演算精度高的特点，适用于河底比降较大河道的流量演算。
在對運動波方程、數值解法及馬斯京根-康吉縯算法進行介紹的基礎上，提齣瞭運動波三角差分縯算法，併給齣瞭該方法的具體差分格式及推導過程。以長江萬縣至宜昌河段和雅礱江瀘寧至打囉河段實測流量數據為例，利用馬斯京根-康吉縯算法和三角差分法分彆進行瞭縯算，併對比和分析瞭計算結果。結果錶明，三角差分法具有預見期、縯算方程簡單、參數率定容易、縯算精度高的特點，適用于河底比降較大河道的流量縯算。
재대운동파방정、수치해법급마사경근-강길연산법진행개소적기출상，제출료운동파삼각차분연산법，병급출료해방법적구체차분격식급추도과정。이장강만현지의창하단화아롱강로저지타라하단실측류량수거위례，이용마사경근-강길연산법화삼각차분법분별진행료연산，병대비화분석료계산결과。결과표명，삼각차분법구유예견기、연산방정간단、삼수솔정용역、연산정도고적특점，괄용우하저비강교대하도적류량연산。
The triangle differential algorithm method of kinematical wave equation was put forward, and the difference scheme and derivation process were given based on the introduction of kinematical wave formula, numerical solution and Maskingum-Cunge method. By using the measured runoff data of Wanxian to Yichang section in Yangtze River and Luning to Daluo section in Yalong River, we carried out calculation, comparison and analysis for Maskingum-Cunge method and the triangle differential al-gorithm method. The results show that the triangle differential method has the advantages of forecast period, simple calculus e-quations, easy parameters rating, and high calculation precision, which is a better calculation method for the mountain river with large gradient ratio.
