Abstract
Buoyancy-driven helium-air exchange flow through double openings was experimentally investigated. The double openings with rectangular cross-section (w/2×d) were settled side by side in w direction. The exchange flow rate and the flow pattern around the openings were simultaneously measured. To clarify the effect of geometry, the cross-section of the opening was systematically varied. Under the smaller d/w geometry, the separated flow pattern (s) was observed, in which the upward and downward flows flew separately in the double openings, respectively. Under the larger d/w geometry, the unseparated flow pattern (u) was observed, in which the upward and downward flows flew inside the openings. The counter-current flows were observed in the openings. The exchange flow rate was a function of the flow pattern. For the flow pattern (s), the exchange flow rate could be predicted using the flow network model with considering the entrainment. For the flow pattern (u), the flow in the opening was same as the exchange flow through a single opening with the same geometry.
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.
