Simulasi Numerik Aliran Udara Ventilasi Dua Dimensional Dengan Metode Beda Hingga

Abstract

Abstract : In CFD (Computational Fluid Dynamics) Simulation, the designer has the capability to design and redesign a room over and over again, until the best and better design is found at a relatively low price and less time compared to a scale experimentation. The main goal of this research is to simulate two dimensional ventilation’s air flow in various ventilation systems. The algorithm consists of seven stages : set the initial and boundary conditions, calculate the temporary velocity u with ADI (Alternating Direct Implicit) method, calculate the temporary velocity v with ADI (Alternating Direct Implicit) method, calculate the pressure value with Line Gauss Seidel method, the final or real velocity value is obtained from correcting temporary velocity values u and v with pressure value derivation, write and save data. From this research, the following observations were concluded : The computer code program which the writer built could generated two dimensional ventilation’s air flow simulation, ADI (Alternating Direction Implicit) method with non-staggered grid can generate visually same simulation compared with SIMPLER method, and increasing the Reynolds number proves to increase the air circulation within a room space.

Keywords : Computational Fluid Dynamics Numerical Simulation Ventilation Air Flow Alternating Direct Implicit Non – Staggered Grid