Author(s): Ranjit Galappatti; Kim Wium Olesen; Abu Saleh Khan
Linked Author(s): Abu Saleh Khan, PEng
Keywords: River Morphology; Jamuna River; Morphological Computations
Abstract: It is well known that Bangladesh has several very well calibrated and tested one-dimensional models of its river systems, developed over nearly two decades of intensive effort. The so-called General Model includes the very large rivers of Bangladesh, viz., the Brahmaputra (known as the Jamuna in Bangladesh), Ganges, Padma and Meghna. The first attempt to develop a morphological model of the three major branches (Jamuna, Ganges and Padma) was made in 1991. Initial examination of the cross sectional shapes of the river, particularly the braided and ever changing river bed of the Jamuna, indicated the difficulties which will be encountered when schematizing the rivers into a one-dimensional model. This paper describes the results of a detailed analysis of cross-section shapes that led to the successful schematization of the rivers and the resulting model. It also describes other useful applications of the analysis and how the “synthetic” cross sectional shapes generated by the analysis can be used to improve the hydrodynamic model itself.
Year: 2004