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A Study on the Reduction of the Sloshing of Storage Tank Using Wing and Diaphragm Baffle

날개형 및 격막형 배플을 이용한 유체저장탱크 내부의 슬로싱 저감 연구

  • 이영신 (충남대학교 기계설계공학과) ;
  • 김현수 (충남대학교 대학원 기계설계공학과) ;
  • 이재형 (충남대학교 대학원 기계설계공학과) ;
  • 김영완 (여수대학교 기계설계공학과) ;
  • 고성호 (충남대학교 기계설계공학과)
  • Published : 2003.12.01

Abstract

Storage tank filled with fluid has unique dynamic characteristics compared to general structures, due to the interaction between fluid and structure. The oscillation of the fluid surface caused by external forces is called sloshing, which occurs in moving vehicles with contained liquid masses, such as trucks, railroad cars, aircrafts, and liquid missles. In this study, the evaluation method for the reduction of sloshing, the optimized size and location of wing and diaphragm baffles are suggested based on the experimental results. The experimental device can simulate the translation motion. A rectangular tank and various baffles are fabricated to study on the sloshing characteristics. The forces measured using the load cell at tank wall and those are compared with each other through the Fourier transformation for various conditions. The study of the sloshing of the rectangular tank equipped with baffles is conducted under the same conditions with non-baffled rectangular tank experiment. From the experimental results, the sloshing reduction effect by the baffles is observed. In conclusion in case of diaphragm baffles, the optimized size ratio of the width of baffle to the water height is 0.44 and the installation location has no effect to the damping of sloshing. In case of wing baffles, the optimized size ratio of the width of baffle to the length of a rectangular tank is 0.1 and the optimized location ratio of the baffle to the water height is 0.9.

Keywords

Sloshing;Experimental Device;Excitaion Frequency;Fourier Transformation;Translational Motion;Wing Baffle;Diaphragm Baffle

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