Numerical and experimental investigation on a new modified valve in a valve tray column |
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Authors: | Asghar Alizadehdakhel Masoud Rahimi Ammar Abdulaziz Alsairafi |
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Affiliation: | (1) CFD Research Center, Chemical Engineering Department, Razi University, Kermanshah, Iran;(2) Faculty of Mechanical Engineering, College of Engineering and Petroleum, Kuwait University, Kuwait, Kuwait |
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Abstract: | This paper reports experimental and computational fluid dynamics (CFD) modeling studies on the performance of three modified
valves operating in a valve tray column. The original and modified valves including vnotched, warped and double-valve are
tested experimentally. The experimental rig was a Perspex column having a single valve equipped with a fluctuating plate to
measure the quality of gas distribution by using laser sensors. Two-stage nested designs were employed to show the repeatability
and consistency of the measurements. In the CFD modeling, the volume of fluid (VOF) method was used to model the gas-liquid
two-phase flow inside the column. A good agreement was observed between experimental data and the CFD predictions. The results
showed that the double-valve layout provides a better gas distribution, smaller bubbles with greater interface area and lower
pressure drop in comparison with the original and the two other modified valves. |
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Keywords: | Valve Tray CFD Hydrodynamics Multiphase Flow Bubble |
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