FLOW AND CONTAMINANT TRANSPORT IN A MULTIPLY CONNECTED DOMAIN OF NATURAL RIVER
This paper reports a numerical computation for a reach of the Madeira River, a tributary of the Amazon, with aim to develop two general-purpose computational codes for grid generation (grid-generator) and flow/pollutant transport (flow-solver) in the complex domains of natural rivers. The adopted quasi-3D hydrodynamic model is closed by turbulence depth-integrated (k)-(ε) and (k)-(w) models. The advanced SIMPLE (Semi-Implicit Method for Pressure-Linked Equation) algorithm for FVA (Finite Volume Approach), ILU (Incomplete Lower-Upper) decomposition, PWIM (Pressure Weighting Interpolation Method), SIP (Strongly Implicit Procedure), under relaxation and multi-grid iterative method have been used to solve the hydrodynamic fundamental equations, discretized on non-orthogonal boundary-fitted grid with collocated variable arrangement. The results, calculated by different turbulence two-equation closure models, have been compared and discussed. Except for steady flow simulations, the processes of pollutant inpouring and plume development at the beginning of side discharge have been also investigated.
river modeling contaminant transport turbulence depth-averaged model natural river multiple connected domain
Liren Yu Jun Yu
Rua Dona Maria Jacinta 482, S(a)o Carlos, SP, Brazil College of Mathematics, UNICAMP, SP, Brazil, before.
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
727-731
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）