TWO-DIMENSIONAL SIMULATION OF STEAM-AIR JET CONDENSED INTO SUBCOOLED WATER

Haibo Li
School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, PR China

Maocheng Tian
School of Energy and Power Engineering, Shandong University, 17923 Jingshi Rd., Jinan 250061, China

Xiaohang Qu
School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255049, Shandong PR China

Min Wei
School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, PR China

DOI: 10.1615/IHTC16.cod.023480
pages 2235-2242

MOTS CLÉS: Direct contact condensation, Steam-air jet, Thermal hydraulic, CFD, Two phase flow

Résumé

In this study, a 2D-axisymmetric numerical model was performed to simulate the steam-air mixture jet condensed into subcooled water on commercial CFD software ANSYS CFX 15.0, which was based on Euler-Euler two-fluid model. The Particle model and the thermal phase change model was carried out to calculate interphase transfer and condensation of steam in the steam-air mixture gas, respectively. The composition variation of the gas mixture was calculated using the species transport equation for the gas phase. This model was validated with experimental and numerical results. The results show that the present method can predict the steam-air jet condensation and could be employed to simulate other similar processes.