A New Total Variation Diminishing Predictor Corrector Approach for Two-Dimensional Shallow Water Flow

Hriday Mani Kalita ()
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Hriday Mani Kalita: National Institute of Technology Meghalaya

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2016, vol. 30, issue 4, No 11, 1497 pages

Abstract: Abstract This paper presents a new efficient and robust hydrodynamic model for simulation of unsteady shallow water flow. The governing equations of shallow water flows in two dimensional forms are solved using a new total variation diminishing (TVD) MacCormack predictor corrector scheme. In this numerical technique an additional TVD term is added after the traditional predictor corrector steps. The advantage of the present TVD term is that it is very simple and gives accurate results at the same time removing the numerical oscillations. Further, application of semi implicit treatment of the friction slope term helps in flow simulation even with very low water depth. Finally the model is used to analyze a wide variety of hydraulic problems including quiescent water above irregular bed, steady flow over irregular bed, steady flow over irregular bed with a shock, dam break flow over dry bed and dam break flow over wet bed. For each of the cases numerical results are compared with available analytical solution and known experimental data. The agreements between the results are satisfactory.

Keywords: Shallow water questions; TVD MacCormack scheme; Well balanced scheme; Undulated bed; Dam break flow (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1007/s11269-016-1234-9

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