The steady-state and dynamic analysis of packed distillation column based on partial differential approach

Karacan, Süleyman; Cabbar, Y.; Alpbaz, Mustafa; Hapoğlu, Hale

doi:10.1016/s0255-2701(98)00035-x

Cited by 11 publications

(1 citation statement)

References 13 publications

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“…The approximate expressions for variables are substituted into the governing equations and the residual errors (R), are minimized by using the Galerkin procedure [18,19]. To increase the vertical resolution, wherever necessary, grid clustering can be applied in the vertical plane [20].…”

Section: Numerical Solution Schemementioning

confidence: 99%

An implicit three-dimensional numerical model to simulate transport processes in coastal water bodies

Balas

Özhan

2000

Int. J. Numer. Meth. Fluids

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A three‐dimensional baroclinic numerical model has been developed to compute water levels and water particle velocity distributions in coastal waters. The numerical model consists of hydrodynamic, transport and turbulence model components. In the hydrodynamic model component, the Navier–Stokes equations are solved with the hydrostatic pressure distribution assumption and the Boussinesq approximation. The transport model component consists of the pollutant transport model and the water temperature and salinity transport models. In this component, the three‐dimensional convective diffusion equations are solved for each of the three quantities. In the turbulence model, a two‐equation k–ϵ formulation is solved to calculate the kinetic energy of the turbulence and its rate of dissipation, which provides the variable vertical turbulent eddy viscosity. Horizontal eddy viscosities can be simulated by the Smagorinsky algebraic sub grid scale turbulence model. The solution method is a composite finite difference–finite element method. In the horizontal plane, finite difference approximations, and in the vertical plane, finite element shape functions are used. The governing equations are solved implicitly in the Cartesian co‐ordinate system. The horizontal mesh sizes can be variable. To increase the vertical resolution, grid clustering can be applied. In the treatment of coastal land boundaries, the flooding and drying processes can be considered. The developed numerical model predictions are compared with the analytical solutions of the steady wind driven circulatory flow in a closed basin and of the uni‐nodal standing oscillation. Furthermore, model predictions are verified by the experiments performed on the wind driven turbulent flow of an homogeneous fluid and by the hydraulic model studies conducted on the forced flushing of marinas in enclosed seas. Copyright © 2000 John Wiley & Sons, Ltd.

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Section: Numerical Solution Schemementioning

confidence: 99%