$\require{mediawiki-texvc}$

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison, Kafe, Webinar 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

Development of the Interfacial Area Concentration Measurement Method Using a Five Sensor Conductivity Probe 원문보기

Journal of the Korean Nuclear Society = 원자력학회지, v.32 no.5, 2000년, pp.433 - 445  

Euh, Dong-Jin (Korea Atomic Energy Research Institute) ,  Yun, Byong-Jo (Korea Atomic Energy Research Institute) ,  Song, Chul-Hwa (Korea Atomic Energy Research Institute) ,  Kwon, Tae-Soon (Korea Atomic Energy Research Institute) ,  Chung, Moon-Ki (Korea Atomic Energy Research Institute) ,  Lee, Un-Chul (Seoul National University)

Abstract ▼ AI-Helper 아이콘AI-Helper

The interfacial area concentration (IAC) is one of the most important parameters in the two-fluid model for two-phase flow analysis. The IAC can be measured by a local conductivity probe method that uses the difference of conductivity between water and air/steam. The number of sensors in the conduct...

주제어

#five sensor conductivity probe   #two-phase flow   #cap bubble   #interfacial area concentration (IAC)  

AI 본문요약
AI-Helper 아이콘 AI-Helper

* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.

제안 방법

  • This study focuses on the validation of the new method using a five sensor probe. Although the shape and size of the bubbles in actual flow can be different from those used in the simulation, and other uncertainties may happen in actual conditions, the five sensor probe method would predict the IAC more exactly than the four sensor probe method for a given measuring area.
  • In this study, several types of interfaces passing through the sensors are classified into four categories, and different mathematical formulations are applied to each category. The configuration formed by the sensor tips and the projected bubble interface is shown in Figs.
  • In this study, the theoretical approach for the local IAC measuring method using a five sensor conductivity probe is presented, and its validity is shown by a numerical simulation for ideal cap bubbles of which the sizes and locations are determined by a random number generator.
  • As a result of the numerical simulation, the five sensor probe method is satisfactory for any pre-defined case compared with the four sensor probe method and the analytical results. This study focuses on the validation of the new method using a five sensor probe. Although the shape and size of the bubbles in actual flow can be different from those used in the simulation, and other uncertainties may happen in actual conditions, the five sensor probe method would predict the IAC more exactly than the four sensor probe method for a given measuring area.
  • To verify the applicability of the five sensor probe method, a numerical simulation is performed. The flow channel is assumed to be
  • To verify the proposed method, a numerical simulation for cap bubbles generated by a random number generator was carried out. As a result of the numerical simulation, the five sensor probe method is satisfactory for any pre-defined case compared with the four sensor probe method and the analytical results.
본문요약 정보가 도움이 되었나요?

참고문헌 (13)

  1. M. Ishii, Thermo-fluid Dynamic Theory of Two-Phase Flow, Eyrolles, Science and Medical Publication of France, Paris, New York (1975) 

  2. I. Kataoka, M. Ishii, and A. Serizawa,'Local Formulation of Interfacial Area Concentration', Int. J. Multiphase Flow, 12, 505(1986) 

    상세보기 crossref

  3. S. T. Revankar and M. Ishii, 'Local Interfacial Area Measurement in Bubbly Flow', Int. J. Heat Mass Transfer, 35, 4, 913(1992) 

    상세보기 crossref

  4. I. Kataoka and A. Serizawa, 'Interfaciel Area Concentration in Bubbly Flow', Nucl. Eng. Design, 120, 163 (1990) 

    상세보기 crossref

  5. G. Kocamustafaogullari, W. D. Huang, and J. Razi, 'Measurement and Modeling of Average Void Fraction, Bubbly Size and Interfacial Area', Nucl. Eng. Des., 120, 163 (1994) 

    상세보기 crossref

  6. Q. Wu and M. Ishii, 'Sensitivity Study on Double-Sensor Conductivity Probe for the Measurement of Interfacial Area. Concentration in Bubbly Flow', Int. J. Multiphase Flow, 25, 1, 155 (1999) 

    상세보기 crossref

  7. T. Hibiki, S. Hogsett, and M. Ishii, 'Local measurement of interfacial area, interfacial velocity and liquid turbulence in two-phase flow', Nuc. Eng. and Des., 184, 287 (1998) 

    상세보기 crossref

  8. M. Ishii and S. T. Revankar, Measurement of Interfacial Area Using Four Sensor Probe in Two Phase Flow, DOE/ER/14147, July (1991) 

  9. M. J. Tan and M. Ishii, Interfacial Area Measurement Methods, ANL-89/5, Feb. (1989) 

  10. S. T. Revankar and M. Ishii, 'Theory and Measurement of Local Interfacial Area Using a Four Sensor Probe in Two-Phase Flow', Int. J. Heat Mass Transfer, 36, 12, 2997(1993) 

    상세보기 crossref

  11. G. B. Wallis, One-Dimensional Two-Phase Flow, p. 380, McGraw-Hill, New York, (1969) 

  12. F. N. Peebles and H. J. Garber, 'Studies on the Motion Bubbles in Liquid', Chem. Eng. Progr., 49, 88(1953) 

  13. R. M. Davis and G. I. Taylor, 'The Mechanics of Large Bubbles Rising through Extended Liquids and through Liquids in Tubes', Proc. Rey. Soc., 200, ser. A, 375, London (1950) 

저자의 다른 논문 :

관련 콘텐츠

이 논문과 함께 이용한 콘텐츠

저작권 관리 안내
섹션별 컨텐츠 바로가기

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

AI-Helper 아이콘
AI-Helper
안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

선택된 텍스트

맨위로