Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2001.06e
- /
- Pages.398-403
- /
- 2001
Pressure Drop in a Helical Square Duct
나선형 사각덕트 내의 압력강하
- Published : 2001.06.27
Abstract
Pressure drop at a helical square duct orifice is numerically evaluated. The orifice is installed at the entrance of a once-through steam generator tube to suppress flow instabilities. The calculated results are compared with the available experimental correlations, and showed good agreement. Effects of curvature ratio and characteristics of the secondary flow with Reynolds number are reported. Through the numerical simulations, pressure drop mechanisms were well understood inside the compact and complicated orifice geometry.
Keywords