Gun식 가스버너의 연소실내 난류 선회유동장 고찰 (Investigation on the Turbulent Swirling Flow Field within the Combustion Chamber of a Gun-Type Gas Burner)

서지정보

· 발행기관 : 대한기계학회
· 수록지 정보 : 대한기계학회논문집 B / 33권 / 9호 / 666 ~ 673페이지
· 저자명 : 김장권

초록

The turbulent swirling flow field characteristics of a gun-type gas burner with a combustion chamber
were investigated under the cold flow condition. The velocities and turbulent quantities were measured
by hot-wire anemometer system with an X-type probe. The turbulent swirling flow field in the edge of
a jet seems to cause a recirculation flow from downstream to upstream due to the unbalance of static
pressure between a main jet flow and a chamber wall. Moreover, because the recirculation flow seems
to expand the main jet flow to the radial and to shorten it to the axial, the turbulent swirling flow
field with a chamber increases a radial momentum but decreases an axial as compared with the case
without a chamber from the range of about X/R=1.5. As a result, these phenomena can be seen
through all mean velocities, turbulent kinetic energy and turbulent shear stresses. All physical quantities
obtained around the slits, however, show the similar magnitude and profiles as the case without a
chamber within the range of about X/R=1.0.

영어초록

The turbulent swirling flow field characteristics of a gun-type gas burner with a combustion chamber
were investigated under the cold flow condition. The velocities and turbulent quantities were measured
by hot-wire anemometer system with an X-type probe. The turbulent swirling flow field in the edge of
a jet seems to cause a recirculation flow from downstream to upstream due to the unbalance of static
pressure between a main jet flow and a chamber wall. Moreover, because the recirculation flow seems
to expand the main jet flow to the radial and to shorten it to the axial, the turbulent swirling flow
field with a chamber increases a radial momentum but decreases an axial as compared with the case
without a chamber from the range of about X/R=1.5. As a result, these phenomena can be seen
through all mean velocities, turbulent kinetic energy and turbulent shear stresses. All physical quantities
obtained around the slits, however, show the similar magnitude and profiles as the case without a
chamber within the range of about X/R=1.0.

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