Abstract

Mean velocities and turbulent characteristics in the three-dimensional flow fields of a gun-type gas burner were measured by using triple hot-wire probe (T-probe) in order to compare them with the results already presented by X-type hot-wire probe (X-probe). Vectors obtained by the measurement of two kinds of probes in the horizontal plane and in the cross section respectively show more or less difference in magnitude each other, but comparatively similar shape in overall distribution. Axial mean velocity component along the centerline shows that the value by T-probe is about ten times smaller than that by X-probe above the range of X/R=3. Also, the axial component of turbulent intensity along the centerline appears the biggest difference between the two probes. Moreover, axial mean velocity component, axial turbulent intensity component and rotational along the Y-directional distance show a big difference between slits and swirl vanes. On the whole, the values by T-probe appear smaller than those by X-probe.

Keywords

• Gun-Type Gas Burner;
• Hot-Wire Anemometer;
• Slit;
• Subsonic Wind Tunnel;
• Swirl Flow;
• Swirl Number;
• Swirl Vane;
• Triple Hot-wire Probe;
• X-Type Hot-Wire Probe

• 건식가스버너;
• 열선풍속계;
• 슬릿;
• 아음속풍동;
• 스월유동;
• 스월수;
• 스월베인;
• 3중열선프로브;
• X형열선프로브;