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Model simulation of tide-induced currents in Gauthami-Godavari estuary

DRS at CSIR-National Institute of Oceanography

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Title Model simulation of tide-induced currents in Gauthami-Godavari estuary
 
Creator Sridevi, B.
Murty, T.V.R.
Sadhuram, Y.
Sarma, V.V.S.S.
Naidu, V.S.
Prasad, K.V.S.R.
 
Subject current profiles
tidal currents
models
bathymetric data
 
Description Predictive spatial distribution of flow field has been simulated from the time series data on currents and tides during dry season (11-19, February, 2009) in the Gauthami-Godavari Estuary utilizing TIDAL model. A 2D-Tidal Estuarine model has been considered (instead of 3D model) due to well-mixed type system and its circulation is dominated by tides during the observational period. The model forcing functions consist of wind and tidal elevations along the open boundaries and no fresh water inflow from the main stream and no land flood in river system. The bathymetry data of the river basin has been collected and supplemented to the model as one of the rigid boundary conditions to evaluate integration. The bottom roughness length (K) was adjusted to achieve model calibration and verification in model simulations of flow field. The model simulation results are in qualitative agreement with the observational data with calibrated bottom roughness length which is about 0.085 m. Model results reveal that the majority of flow was found to be along the channel axis (i.e., high iso-bath contour). During flood time, flow is south-west direction and it is changed to northeast direction during ebb period which is indicating that the model results resemble flow in the real eastern system.
 
Date 2013-06-17T06:38:02Z
2013-06-17T06:38:02Z
2013
 
Type Journal Article
 
Identifier Current Science, vol.104(10); 2013; 1287-1290
http://drs.nio.org/drs/handle/2264/4312
 
Language en
 
Rights Copyright [2013]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Current Science Association