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Environmental Engineering Research 2001;6(3): 167-177.
EFFECTS OF NOZZLE TIP POSITIONS ON THE FLOW CHARACTERISTIC OF HIGH COMPACT PERFORMANCE REACTORS
Jin-Do Chung1, Seung-Min Hwang2, and Seong-Soo Kim3
1Department of Environmental Engineering, Hoseo University, Chungchongnarn-Do 336-795, Korea
2Graduate School of Department of Environmental Engineering, Hoseo University, Chungchongnam-Do 336-795, Korea
3Department of Automotive Engineering, Silla University, Pusan 617-736, Korea
Corresponding Author: Jin-Do Chung ,Tel: +82-41-540-5743, Fax: +82-41-540-5460, Email: jdchung@office.hoseo.ac.kr
Received: January 8, 2001;  Accepted: July 7, 2001.
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ABSTRACT
The effects of nozzle tip positions on the flow characteristic of HCR(high compact performance reactors) were investigated using PIVfparticle image velocimetry). The instantaneous velocity distribution was measured to understand the How characteristic according to nozzle tip positions at three regions of HCR, top(region A), middle(region B) and bottom(region C). Mean velocity, kinetic energy and relative turbulence intensity distribution were analyzed respectively. This study showed that the nozzle tip agreement position favorably affected convection related performance in terms of the convective velocity and the time mean kinetic energy of the inner tube of HCR. However, the nozzle tip 10 mm down position showed the degraded performance of convective flow due to the not-fully developed spray of the injected fluid at inlet port of the inner tube.
Keywords: flow characteristic | flow ratio | HCR | nozzle tip position | wastewater
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