Shin, Dong Ho Gim, Yeonghyeon Sohn, Dong Kee Ko, Han Seo 2024-01-19T20:31:00Z 2024-01-19T20:31:00Z 2021-09-02 2019-04 0098-2202 https://pubs.kist.re.kr/handle/201004/120157 Detailed numerical data were presented for the development of a venturi-type water purifier which had a cavitation nozzle to enhance turbulent kinetic energy and vapor volume fraction. Numerical analysis for cavitation was conducted in multiphase flow using the software, CFX. The numerical method used in this study was verified by the experimental data of pressure distribution in tube and the observation of cavitation from previous studies. From the result of the numerical analysis, a logarithmic relation between the vapor volume fraction and volume flow rate of water according to the area ratio between the throat and the entrance of a venturi-tube was derived. In addition, spiral-shaped fins were developed to enhance the turbulent kinetic energy in the body of a venturi-tube. Thus, it was confirmed that the volume fraction and turbulent kinetic energy of the developed water purifier were enhanced compared with the normal venturi-tube without the spiral-shaped fin. Finally, the improved water treatment performance of the advanced design of the venturi-tube was confirmed by the removal test of the representative solutions. English ASME BUBBLE-SIZE CAVITATION FLOW Development of Venturi-Tube With Spiral-Shaped Fin for Water Treatment Article 10.1115/1.4042750 1 JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, v.141, no.5 JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME 141 5 scie scopus 000461541600016 2-s2.0-85062610049 Engineering, Mechanical Engineering Article BUBBLE-SIZE CAVITATION FLOW