SIMULASI NUMERIK KONVEKSI ALAMI DALAM KOTAK 2D DENGAN VARIASI KEMIRINGAN DENGAN METODE BEDA HINGGA

Abstract

Numerical simulation of natural convection in 2D cavity with variations of inclination done to know the phenomenon of fluid flow profile, distribution of temperature and pressure. Simulation done by solving governing equations of natural convection with Bousinesq approximations consists of continuity equation, Navier Stokes equations, and energy equation using finite different approximation. For solving the governing equations done by ADI method for calculation momentum equation of x and y direction without enclose pressure unsure to get temporary velocity (u* and v*). Then pressure calculated by Line Gauss Seidel Iteration method, and used to looking for true u and v value. Energy equation that contain temperature also solved by ADI method. Simulation’s result at Ra 10⁶ with aspect ratio 1 : 2  show Benard Convection on 0^o inclination (heated from bottom), and on 180^o inclination (heated from top) convection heat transfer not occur. Thermal distribution and velocity vector on different inclination showing buoyancy force direct on natural convection in 2D cavity.