Assessment of models for onset of flow instability experimental data in narrow rectangular channel

作者：Wang Yan Lin^*; Huang Yan Ping; Lu Dong Hua

来源：Nuclear Power Engineering, 2008, 29(1): 101-105.

• Flow instability
• Narrow rectangular channel

Assessment of models for Onset of Significant Void and Onset of Flow Instability was carried out against narrow rectangular channel (1000 mm × 25 mm × 2 mm) experimental data in the condition of: P=1-15 MPa, G=500-2000 kg/(m2&middots), ΔTsub,in=20-100°C, q=40-1000 kW/m2. The results showed the correlations of Saha-Zuber, Levy and Bowring for OSV and the correlations of W&F, Lee and Bankoff and Kennedy for OFI predicted the experimental results within ± 20%, but predicted OFI obviously lower at low heat flux and higher results at high heat flux. A new purely empirical correlation was developed by comparing the heat flux leading to OFI with that leading to saturation: qOFI=1.95 qsat0.87. The deviation is within ± 15%. It is also suitable for other types of channels and parameters.

• 出版日期2008