한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2010년 춘계학술대회논문집
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- Pages.320-325
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- 2010
과냉 비등유동에 대한 CFD 모의 계산에서의 벽 인접격자 영향
NEAL-WALL GRID DEPENDENCY OF CFD SIMULATION FOR A SUBCOOLED BOILING FLOW
- 발행 : 2010.05.13
초록
A multiphase CFD analysis is performed to investigate the effect of near-wall grid for simulating a subcooled boiling flow in vertical tube. The multiphase flow model used in this CFD analysis is the two-fluid model in which liquid(water) and vapor(steam) are considered as continuous and dispersed fluids, respectively. A wall boiling model is also used to simulate the subcooled boiling heat transfer at the heated wall boundary. The diameter and heated length of tube are 0.0154 m and 2 m, respectively. The system pressure in tube is 4.5 MPa and the inlet subcooling is 60 K. The near-wall grid size in the non-dimensional wall unit (
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