Abstract
For the evaluation of gas entrainment phenomena in the sodium-cooled fast reactor (JSFR), a high-precision simulation method for gas-liquid two-phase flows on unstructured meshes have been developed. In this study, our high-precision volume-of-fluid algorithm on unstructured meshes is introduced into the two-dimensional unstructured adaptive mesh algorithm (described in the 1st report). For that purpose, an appropriate redistribution method for volume fraction values is established. In addition, a calculation procedure is formulated, in which momentum values at both gas and liquid phases are conserved respectively when velocity values at refined or merged cells are calculated. This new unstructured adaptive mesh algorithm for gas-liquid two-phase flows is verified by solving well-known slotted disk rotation problems. As a result, the present adaptive mesh algorithm succeeds in maintaining slotted disk shape after one rotation by relatively small number of cells. In addition, the dam break problem is also simulated. The simulation results showed that the gas-liquid interface is simulated with high resolution and the transient interfacial position is more accurate than the simulation result on the non-adaptive mesh.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
