Abstract
Predictions from embedded-LES are presented of a model of a section of a double-stacked freight wagon subjected to different local loading configurations. In total, 15 different upstream (Gfront) and downstream (Gbase) gap spacings were simulated to characterise the change in the flow topology.The mean flow fields indicate that the inter-wagon flow undergoes a significant topology change over the range of Gfront=1.77W–3.23W (W= wagon width). For Gfront≤1.77W, the mean recirculating flow in the gap covers its entire length. In contrast, for Gfront≳3.23W, the complete wake closure for the upstream wagon occurs enabling the upstream shear layers to impinge on the entire downstream surface, in turn, increasing the rate of change of drag force as Gfront is increased. The change in the wake shedding frequency, directly affecting the base pressure and consequently the drag, due to the variation in Gfront and Gbase, is presented.
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: Journal of Wind Engineering & Industrial Aerodynamics
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.
