에너지공학 (Journal of Energy Engineering)

  • 제14권1호
  • /
  • Pages.11-17
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  • 2005
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  • 1598-7981(pISSN)
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  • 2713-7074(eISSN)
한국에너지학회 (The Korean Society for Energy)
권호 표지

고체입자가 부상된 이상유동에서 압력강하에 대한 해석적 접근

A Theoretical Approach on the Pressure Drop in Two-phase Particle-laden Flows

  • Kim Seyun (School of Mechanical Eng., Chungbuk National Univ.) ;
  • Lee Kye-Bock (School of Mechanical Eng., Chungbuk National Univ.)
  • 발행 : 2005.02.01
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⟨ 이전 논문 다음 논문 ⟩

초록

본 연구의 목적은 입자가 부상된 이상유동에서 난류특성 변화를 고려하여 여러 유동 조건에 적용할 수 있는 단위 길이당 압력손실을 예측하는 모델을 개발하는 것이다. 입자 뒤의 후류, 입자 크기, 부하도, 상사이의 밀도비가 고려되었다. 마찰에 의한 압력 강하량은 검사체적에서의 힘의 평형을 사용해 유도되었고 난류강도와 압력 강하량의 상관관계를 구하였다. 수치해석 결과는 실험결과와 잘 일치하고 수치모델이 입자가 부상된 이상유동에서 압력강하의 기구를 잘 예측하는 것을 확인하였다.

The purpose of this research is to develop the model of pressure drop per unit pipe length due to the turbulence modulations in particle-laden flows which can be applied to various fluid conditions. The wake behind a particle, particle size, loading ratio and density difference between two phases of particle-laden flow was considered. The frictional pressure drop was modeled with the force balance in control volume. The numerical results show good agreements with available experimental data and the model success-fully predicted the mechanism of the pressure drop in particle-laden flows.

키워드

참고문헌

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