STUDI NUMERIK PENGARUH VARIASI JUMLAH SALURAN MASUK PRESSURE SWIRL ATOMIZER TERHADAP KARAKTERISTIK SPRAY
ABSTRACT: This research was
conducted to determine the effect of inlet channel number on the spray
characteristics of the pressure swirl atomizer using numerical methods. The
observed spray characteristics were spray cone angle and discharge coefficient.
Pressure swirl atomizer is a nozzle that can atomize fluid using vortex fluid
in the mixing chamber, the magnitude of the vortex fluid is affected by the
tangential velocity component of fluid at the nozzle inlet. Number of nozzle
inlet was varied at 1, 2 and 4 channel. Total surface area of the inlet was
kept constant of 1.76 mm 2 for all variation. The fluid used in this study were
diesel and Reynolds number was varying at 2000, 2500, 3000, 3500 and 4000. The
result show that with the increasing of inlet channel number at a fixed
Reynolds number will generate spray with larger spray cone angle. This is due
to tangential velocity compunentand swirling flow in mixing chamber
increasewith the increasity of inlet channel number. This phenomena ruselt
higher spray cone angle. Discharge coefficient also increase with the
increasity of inlet channel number. This conditionshow that losses inside
nozzle with 4 inlet channel number is smaller than that with less inlet channel
number.
Penulis: Purnami
Kode Jurnal: jptmesindd140207
