Investigation of dust particle removal effi ciency of self-priming venturi scrubber using computational fl uid dynamics

Sarim Ahmed; Hassan Mohsin; Kamran Qureshi; Ajmal Shah; Waseem Siddique; Khalid Waheed; Naseem Irfan; Masroor Ahmad; Amjad Farooq

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자료유형: 학술저널

저자정보: Sarim Ahmed Hassan Mohsin Kamran Qureshi Ajmal Shah Waseem Siddique Khalid Waheed Naseem Irfan Masroor Ahmad Amjad Farooq

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제50권 제5호

발행연도: 2018.1

수록면: 665 - 672 (8page)

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A venturi scrubber is an important element of Filtered Containment Venting System (FCVS) for theremoval of aerosols in contaminated air. The present work involves computational fluid dynamics(CFD) study of dust particle removal efficiency of a venturi scrubber operating in self-priming mode usingANSYS CFX. Titanium oxide (TiO2) particles having sizes of 1 micron have been taken as dust particles. CFD methodology to simulate the venturi scrubber has been first developed. The cascade atomizationand breakup (CAB) model has been used to predict deformation of water droplets, whereas the EulerianeLagrangian approach has been used to handle multiphase flow involving air, dust, and water. Thedeveloped methodology has been applied to simulate venturi scrubber geometry taken from the literature. Dust particle removal efficiency has been calculated for forced feed operation of venturi scrubberand found to be in good agreement with the results available in the literature. In the second part, venturiscrubber along with a tank has been modeled in CFX, and transient simulations have been performed tostudy self-priming phenomenon. Self-priming has been observed by plotting the velocity vector fields ofwater. Suction of water in the venturi scrubber occurred due to the difference between static pressure inthe venturi scrubber and the hydrostatic pressure of water inside the tank. Dust particle removal efficiencyhas been calculated for inlet air velocities of 1 m/s and 3 m/s. It has been observed that removalefficiency is higher in case of higher inlet air velocity.

참고문헌 (10)

참고문헌 신청

B. Sehgal / 2001 / Accomplishments and challenges of the severe accident / Nucl. Eng. Design 210(1-3):79~94

M. Ali / 2013 / Dust particle removal efficiency of a venturi scrubber / Ann. Nucl. Energy 54:178~183

Nuclear Energy Agency / 2014 / Status Report on Filtered Containment Venting

N. Gulhane / 2015 / Experimental study of iodine removal efficiency in self-priming venturi / Ann. Nucl. Energy 78:152~159

M. Lehner / 1998 / Aerosol separation efficiency of a venturi scrubber working in selfpriming mode / Aerosol Sci. Technol. 28(5):389~402

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