PENGARUH JARAK SUMBER JET TERHADAP TEMPERATUR DINDING SELINDER

Kaprawi Sahim

Abstract


Aliran jet bebas yang keluar dari plat orifis segiempat dengan temperatur lebih tinggi dari temperatur sekeliling menabrak sebuah selinder maka temperatur dinding selinder akan naik. Hasil pengukuran temperatur pada sekeliling selinder menunjukkan bahwa terjadi gradien temperatur yang kecil pada selinder bila selinder jauh dari sumber jet. Pada jarak yang dekat dari sumber jet maka gradien terbesar terjadi pada daerah bagian depan selinder. Sedangkan pada bagian belakang selinder, mulai dari daerah separasi, gradien temperatur lebih kecil. Selain itu semakin lebar penampang orifis maka semakin turun temperatur pada dinding selinder.

 

Free jet flow coming out from a rectangulaire orifice has temperature higher than than the ambient. This flow attack a cilynder so the wall temperature of cilynder will increase. The results show that the small temperature gradient at cilynder wall occur when the cilynder is palced far from the orifice. Near the orifice or jet source so great temperature gradient occur at the front wall of the cilynder. While at the back wall, starting from the separasion region, the temperature gradient is not high. The wider of orifice cross section the smaller temperature of waal cilynder.


Keywords


orifice, jet flow, temperature, cilynder

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