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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제39권 제2호
- 발행연도
- 2015.2
- 수록면
- 136 - 142 (7page)
이용수
초록· 키워드
오류제보하기
The shell and tube heat exchanger is an essential part of a power plant for recovering transfer heat between the feed water of a boiler and the wasted heat. The baffles are also an important element inside the heat exchanger. Internal materials influence the flow pattern in the bed. The influence of baffles in the velocity profiles was observed using a three-dimensional PIV (Particle Image Velocimetry) around baffles in a horizontal circular tube. The velocity of the particles was measured before the baffle and between them in the test tube.
Results show that the velocity vectors near the front baffle flow along the vertical wall, and then concentrate on the upper opening of the front baffle. The velocity profiles circulate in the front and rear baffle. These profiles are related to the Reynolds number (Re) or the flow intensity. Velocity profiles at lower Re number showed complicated mixing to obtain the velocities and concentrate on the lower opening of the rear baffle as front wall.
Numerical simulations were performed to investigate the effects of the baffle and obtain the velocity profiles between the two baffles. In this study, a commercial CFD package, Fluent 6.3.21 with the turbulent flow modeling, k-ε are adopted. The path line and local axial velocities are calculated between two baffles using this program.
Results show that the velocity vectors near the front baffle flow along the vertical wall, and then concentrate on the upper opening of the front baffle. The velocity profiles circulate in the front and rear baffle. These profiles are related to the Reynolds number (Re) or the flow intensity. Velocity profiles at lower Re number showed complicated mixing to obtain the velocities and concentrate on the lower opening of the rear baffle as front wall.
Numerical simulations were performed to investigate the effects of the baffle and obtain the velocity profiles between the two baffles. In this study, a commercial CFD package, Fluent 6.3.21 with the turbulent flow modeling, k-ε are adopted. The path line and local axial velocities are calculated between two baffles using this program.
목차
Abstract
1. Introduction
2. Experimental Apparatus and Methods
3. Results and Discussion
4. Numerical Analysis
References
참고문헌 (14)
참고문헌 신청
1. [학술지(정기간행물)] - B. B. Gupta / 1995 / A helical baffle for cross-flow microfiltration / Journal of Membrane 99 : 31 ~ 42
2. [학술지(정기간행물)] - J. J. Dijk / 1998 / The influence of horizontal internal baffles on the flow pattern in dense fluidized beds by X-ray investigation / Power Technology 98 : 273 ~ 278
3. [학술지(정기간행물)] - C. Tomasz / 2000 / Method of calculation of new cyclone-type separator with swirling baffle and bottom take off of clean gas-part I : Theoretical approach / Chemical Engineering and Processing 441 : 441 ~ 448
4. [학술지(정기간행물)] - D. Leith / 1972 / The collection efficiency of cyclone-type particle collectors-a new theoretical approach / American Institute of Chemical Engineers Symposium Series 68 (126) : 196 ~ 206
5. [학술지(정기간행물)] - L. Du / 2005 / Experimental study of particle flow in a gas-solid separator with baffles using PDPA / Journal of the Chemical Engineering 108 : 59 ~ 67
2. [학술지(정기간행물)] - J. J. Dijk / 1998 / The influence of horizontal internal baffles on the flow pattern in dense fluidized beds by X-ray investigation / Power Technology 98 : 273 ~ 278
3. [학술지(정기간행물)] - C. Tomasz / 2000 / Method of calculation of new cyclone-type separator with swirling baffle and bottom take off of clean gas-part I : Theoretical approach / Chemical Engineering and Processing 441 : 441 ~ 448
4. [학술지(정기간행물)] - D. Leith / 1972 / The collection efficiency of cyclone-type particle collectors-a new theoretical approach / American Institute of Chemical Engineers Symposium Series 68 (126) : 196 ~ 206
5. [학술지(정기간행물)] - L. Du / 2005 / Experimental study of particle flow in a gas-solid separator with baffles using PDPA / Journal of the Chemical Engineering 108 : 59 ~ 67
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UCI(KEPA) : I410-ECN-0101-2016-559-001277459