Pola Aliran Udara pada Ventilasi Alamiah dalam Rumah Tanaman
LAMPIRAN
Lampiran 1. Gambar teknik rumah tanaman tipe modified arch yang digunakan dalam penelitian tampak isometrik.
Lampiran 2. Tampak depan dan samping rumah tanaman tipe modified arch yang digunakan dalam penelitian.
SIMULASI DISTRIBUSI SUHU DAN POLA ALIRAN UDARA DALAM RUMAH TANAMAN TIPE MODIFIED ARCH
MENGGUNAKAN COMPUTATIONAL FLUID DYNAMICS
TITIN NURYAWATI
SEKOLAH PASCASARJANA INSTITUT PERTANIAN BOGOR
BOGOR 2011
ABSTRACT
TITIN NURYAWATI. Simulation of Temperature Distribution and Airflow Pattern on a Modified Arch Greenhouse Using Computational Fluid Dynamics.
Supervised by HERRY SUHARDIYANTO, YULI SUHARNOTO and HARMANTO.
In this research, the effect of wind speed on the natural ventilation of a modified arch greenhouse was analysed by computational fluid dynamics CFD, using the
commercial software SolidWorks of 2010. The objectives of this research were to understand the natural ventilation on the greenhouse and develop a simulation of
temperature distribution and the airflow pattern on the modified arch greenhouse. The experiment was carried out in a modified arch greenhouse equipped with both
top and side ventilations. Climate data and greenhouse characteristics were used as inputs and boundary condition to develop a simulation model. Two-
dimensional simulation in a steady state with the condition of no wind speed 0.0 ms, moderate wind speed 0.5 and 0.6 ms and high wind speed 1.8 ms were
carried out. The wind speed through the insect-proof screen was simulated as a flow through porous media. The CFD model has succeded in predicting the
temperature distribution and airflow pattern of the greenhouse. The result of the model showed that the greenhouse has a gradient temperature vertically and the
natural ventilation works effectively. It is proved that a small error percentage of difference temperatures between the simulation result and the observed data less
than 8 was obtained. The coefficient variation was also small 0.12, with the coefficient of uniformity of 89.76.
Keywords: CFD, temperature distribution, modified arch greenhouse, ventilation,
simulation