Title of article :
AN EFFICIENT BOUNDARY FITTED NON-HYDROSTATIC MODEL FOR FREE-SURFACE FLOWS
Author/Authors :
AHMADI, A. University of Queensland - Department of Civil Engineering, AUSTRALIA , AHMADI, A. university of tehran - University College of Engineering - School of Civil Engineering, تهران, ايران , BADIEI, P. university of tehran - University College of Engineering - School of Civil Engineering, تهران, ايران , NAMIN, M. M. university of tehran - University College of Engineering - School of Civil Engineering, تهران, ايران
Abstract :
A boundary fitted non-hydrostatic finite volume model is presented to simulatetwo dimensional vertical free surface flows effectively deploying only 2-4vertical layers. The algorithm is based on a projection method which results in ablock tri-diagonal system of equation with pressure as the unknown. Thissystem can be solved by a direct matrix solver without iteration. To purpose ofminimise the computational cost, a new top-layer pressure treatment isproposed which enables the model to simulate relatively short wave motionwith very small vertical layers accurately. The test of linear and nonlinearsinusoidal short wave propagation with significant vertical accelerations isapplied correctly using a small number of layers.
Keywords :
Implicit Finite Volume Method , Projection Method , Non , Hydrostatic Pressure , Free , Surface Flow , Top Layer Treatment
Journal title :
Journal of Engineering Science and Technology
Journal title :
Journal of Engineering Science and Technology
