An Efficient Approach for Simulation of Water Levels due to the Nonlinear Interaction of Tide and Surge Along the Coast of Bangladesh

Estimating water levels caused by a tropical storm along the Bangladesh coast: A numerical approach

“… is set to a fixed value when the wind speed is more than [ 15 , 16 ]. As in Paul et al [ 14 ], is assumed in the form: wherein the estimation of the corresponding surface wind field is made through In Eq. (5) , denotes the maximum sustained wind speed (MSWS) at the maximum radial distance , and is the distance between the center of the cyclone and the point at which the wind field is needed.…”

“…The pioneering work in the storm surge simulation along the BOB region due to Das [ 7 ] was carried out by the finite difference method (FDM) approximating the complex coastal/island boundaries through the stair-step approach with a lower grid resolution ( ) to foresee and analyze tidal surges obtained by linear superposition of tides and surges. However, we are well aware of the fact that tides are a continuous process in the sea that constantly interacts with surges nonlinearly [ 14 ]. The dynamical tide-surge interaction (TSI) as well as the high grid resolution was not taken into consideration in that investigation due to computing limitations.…”

“…Therefore, improvements can be made to enhance the accuracy and comprehensiveness on that of Das [ 7 ]. Recognizing the need for improvements, subsequent studies by Johns and Ali [ 8 ], Roy [ 10 ], Paul and Ismail [ 5 , 6 , 12 ], and Paul et al [ 13 , 14 ] have built upon the findings presented by Das [ 7 ]. These studies have primarily employed a semi-implicit FDM approach to discretize the model equations, benefiting from numerical stability.…”