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Effects of Spring-neap Tides in Regional Coastal Groundwater Flow Modeling

Author: ZhuangShuiYing
Tutor: LiLing
School: Hohai University
Course: Hydraulics and River Dynamics
Keywords: Neap tidal Water level fluctuations Boussinesq equation Numerical Simulation Equivalent coastal boundaries
CLC: P641.7
Type: Master's thesis
Year: 2006
Downloads: 115
Quote: 0
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Abstract


Coastal boundary conditions existing coastal regional groundwater modeling often given as the mean sea level , ignoring the impact of the tides . When Coast beach inclination smaller , ultra-high tides very obvious . Regional groundwater modeling large-scale simulation of the dynamic changes of the tides is a small -scale process , there are certain difficulties in the coupling between the two , consider the impact of the tidal model will greatly increase the amount of computation . Is very important to study how the dynamic effects of the tidal converted to equivalent static effect of ultra-high (head ) , the establishment of an equivalent instead of the original dynamic boundary seaward boundary , directly as a regional groundwater analog input boundary with scientific significance and practical application in the background. First, the size of the tidal level fluctuation mechanism elaborated to analyze the characteristics of the size of the tidal level fluctuations , then head ultrahigh analysis from a quantitative point of view , to establish the head of ultra-high with impact factor empirical formula , and eventually establish a consideration of tidal equivalent coast boundary conditions. Specific studies include the following aspects : ( 1 ) to establish the size of the tidal level fluctuations consider the role of the seepage face model ; ( 2) analysis of the size of the tidal level fluctuation mechanism ; ( 3 ) through theoretical analysis and mathematical modeling of the size of tidal level fluctuations characteristics ; ( 4 ) dimensionless mathematical model to identify control the head high impact factor ; ( 5 ) by a mathematical model to analyze the quantitative relationship of the head of ultra-high with various dimensionless factor ; ( 6 ) According to the head the high empirical formula to establish the equivalent Coast boundary conditions ; ( 7) combined with intelligent data acquisition and control system for larger scale physical model experiments to study the size of the fluctuations in tidal level characteristics .

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CLC: > Astronomy,Earth Sciences > Geology > Hydrogeology and Engineering Geology > Hydrogeology (groundwater hydrology ) > Groundwater Survey and Exploration
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