ENGINEERING JOURNAL : SIMULASI PENGENDALIAN AKTIF TERHADAP SILINDER SIRKULAR TUNGGAL DENGAN PEMANASAN PERMUKAAN SILINDER PADA FLUKS PANAS TETAP

Jurnal Rekayasa Vol 5 No 2 Artikel 08

Muh Nurkoyim Kustanto
( Staf Pengajar Jurusan Teknik Mesin, Fakultas Teknik, Universitas Jember)

ABSTRACT: Active flow control is one methode to reduce drag coefficient of immersed body through fluid flow. One of active control could be done by warm-up the surface of cylinder. Numerical simulation used ANSYS 11.0 software. Modelling done by warm-up the cylinder surface that place orthogonal and move pass through with 30 m/s velocity and air temperature 200C. Air flow modelled as external flow at pressure 1 atm. The cylinder heated by 3 methode, that is heating all over cylinder surface, half of front cylinder surface dan half of rear cylinder surface. The cylinder without surface heating used as comparation. The cylinder heating by constan flux 500, 750 and 1000 w/m2 successively. The result show that heating cylinder at rear the drag coefficient raise average 0.09%. On the heating all over cylinder surface drag coefficient raise average 0,1 %. at simulation range. On the heating half front cylinder surface raise of drag coefficient happened about 0,19 % at simulation range.

Keywords : Active flow controll, Cylinder surface heating, drag coefficient..

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