题名

ESTIMATION OF THE SPECIFIED TIME SCALE FOR MASS TRANSPORT IN A TIDAL ESTUARY

并列篇名

感潮河口質量傳輸之特定時間尺度估計

DOI

10.6652/JoCICHE.201803_30(1).0005

作者

楊方泊源(Fang-Po-Yuan Yang)；黃良雄(Liang-Hsiung Huang)；林孟郁(Meng-Yu Lin)；張正緯(Cheng-Wei Chang)

关键词

specified time scale ； advection-dispersion equation ； tidal estuaries ； semi-analytical method ； 特定時間尺度 ； 移流－延散方程式 ； 感潮河口 ； 半解析方法

期刊名称

中國土木水利工程學刊

卷期/出版年月

30卷1期（2018 / 03 / 01）

页次

51 - 59

内容语文

英文
中文摘要

The purpose of this paper is to estimate the specified time scale of mass transport in a tidal estuary, which could be used to simplify the difficulties in modeling mass transport in a tidal estuary. A mathematical model comprising a 1-D co-oscillating tide flow-field formulation and a 1-D advection-dispersion equation was designed. The co-oscillating tide model was solved using linear Airy wave theory. The advection-dispersion equation was solved by applying an image method and using a finite Fourier transform with a weak derivative assumption, followed by numerical evaluation using the Runge-Kutta method. An approximate time-scale relationship was then obtained by applying the dimensional technique to the governing equations. Finally, using the numerical verifications of the semi-analytical solutions, the rationality of the time-scale relationship was confirmed. The implications of these results are discussed.
英文摘要

本文章之目的為尋求適用於感潮河口質量傳輸之特定時間尺度，其可簡化感潮河口質量傳輸問題的困難度。文中以一維的共振潮汐流場和一維的移流－延散方程式構成研究模型。其中，一維的共振潮汐流場採用線性波理論求解；一維的移流－延散方程式則利用映像法配合有限傅立葉變換，引入弱微分之假設，並使用龍格－庫塔法求得半解析解。爾後，藉由因次分析的技巧找尋近似的時間尺度關係，並以前述半解析解驗證其合理性，以及探討其意義。
主题分类 工程學 > 土木與建築工程
工程學 > 水利工程
工程學 > 市政與環境工程
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