KALIBRASI DAN EVALUASI KINERJA RAINFALL SIMULATOR
ABSTRACT: Rainfall simulator
is important for studying hydrology and erosion in laboratory. The most important parameter for studying the
performance of rainfall simulator is rain intensity, drop size distribution,
drop mass, drop impact velocity, and kinetic energy. They are evaluated by uniformity coefficient
(UC) and distribution uniformity (DU). This research was aimed to study the
functional performance of rainfall simulator including determination of the
correlation between pressure with rainfall parameters (rain intensity, drop
size distribution, and kinetic energy) and rainfall simulator performance
evaluation based on uniformity coefficient and distribution uniformity. The data was analyzed by using linear
regression and evaluated by uniformity coefficient and distribution
uniformity.The result showed that pressure had linear relationship with rain
intensity, diameter drop distribution, drop impact velocity, dropped mass, and
kinetic energy. The coefficient
uniformity (CU) of the pressure 2.5 psi-6.5 psi
more than 80% and the distribution uniformity (DU) more than 70%. The
rainfall simulator had better performance at the pressure of 2.5 psi than 6.5
psi.
Keywords: rainfall, simulator,
performance
Penulis: Bambang Rahadi, Soemarno,
Aniek Masrevaniah, Sugeng Priyono
Kode Jurnal: jppertaniandd080026
