Investigation of the Three-Dimensional Turbulent Flow Fields of the Gas Swirl Burner with a Cone Type Baffle Plate ( I )

• 영문명: Investigation of the Three-Dimensional Turbulent Flow Fields of the Gas Swirl Burner with a Cone Type Baffle Plate ( I )
• 발행기관: 군산대학교 수산과학연구소
• 저자명: Jang-kweon Kim
• 간행물 정보: 『군산대학교 수산과학연구소 연구논문집』제5집, 184~194쪽, 전체 11쪽
• 주제분류: 농수해양 > 수산학
• 파일형태: PDF
• 발행일자: 2004.07.03

영문 초록

This paper presents vector fields. three dimensional mean velocities, turbulent intensities, turbulent kinetic energy and Reynolds shear stresses measured in the X-V plane of the gas swirl burner with a cone type baffle plate by using an X-type hot-wire probe. This experiment is carried out at the !low rates of 350 and 450 ℓ/min which are equivalent to the combustion air flow rate necessary to release 15.000 kcal/hr in a gas furnace. The results show that the maximum axial mean velocity component exists around the narrow slits situated radially on the edge of a burner. Therefore. there is some entrainment of ambient air in the outer region of a burner. The maximum values of turbulent intensities occur around the narrow slits and in front of a burner up to X/R = 1.5. Moreover, the turbulent intensity components show a relatively large value in the inner region due to the flow diffusion and mixing processes between the inclined baffle plate and the swirl vane. Consequently. the combustion reaction is expected to occur actively near these regions.

목차

Abstract

1. Introduction

2. Structure of a Gas Swirl Burner

3. Experimental Apparatus

4. Experimental Method

5. Results and Discussion

6. Conclusion

Acknowledgement

References