Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Surface Treatment Effect on the Toilet by Numerical Modeling and High Speed CCD Camera

수치모델과 고속 CCD 카메라를 이용한 세변기 표면 처리 효과 특성 해석

  • Roh, Ji-Hyun (Department of Materials Science and Engineering and Plasma Materials Research Center, Kunsan National University) ;
  • Do, Woo-Ri (Department of Materials Science and Engineering and Plasma Materials Research Center, Kunsan National University) ;
  • Yang, Won-Kyun (Department of Materials Science and Engineering and Plasma Materials Research Center, Kunsan National University) ;
  • Joo, Jung-Hoon (Department of Materials Science and Engineering and Plasma Materials Research Center, Kunsan National University)
  • 노지현 (군산대학교 공과대학 신소재공학과, 플라즈마 소재 응용 센터) ;
  • 도우리 (군산대학교 공과대학 신소재공학과, 플라즈마 소재 응용 센터) ;
  • 양원균 (군산대학교 공과대학 신소재공학과, 플라즈마 소재 응용 센터) ;
  • 주정훈 (군산대학교 공과대학 신소재공학과, 플라즈마 소재 응용 센터)
  • Received : 2011.02.21
  • Accepted : 2011.02.27
  • Published : 2011.02.28
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Abstract

Numerical analysis is done to investigate the effect of surface treatment of a toilet on the cleanness. The surface treatment using plasma for the super-hydrophobic surface expects the self-cleaning effect of the toilet seat cover for preventing the droplets with a great quantity of bacteria during the toilet flushing after evacuation. In this study, the fluid analysis in the toilet during the flushing was performed by an ultrahigh-speed CCD camera with 1,000 frame/sec and the numerical modeling. And the spattering phenomenon from the toilet surface during urine was analyzed quantitatively by CFD-ACE+ with a free surface model and a mixed model of two fluids. If the surface tension of the toilet surface is weak, many urine droplets after collision bounded in spite of considering the gravity. The turbulence generated by the change of angle and velocity of urine and the variation of the collision phenomenon from toilet surface were modeled numerically.

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References

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