Recirculating flow past a cylinder of a yield stress fluid
Abstract eng: The recirculating flow around a circular cylinder is investigated experimentally and numerically in a Poiseuille configuration. A Newtonian fluid and two elasto-viscoplastic fluids without thixotropy prepared with Carbopol polymer are used. A regularised Herschel-Bulkley viscoplastic numerical model has been used to make comparison with experimental results. The morphologies and especially the geometrics characteristics of the twin vortices are described according to the Oldroyd and Reynolds numbers. The unyielded zones are defined. The parameters of the flow at the transition to the recirculating flow regime are provided.
Publisher:
International Union of Theoretical and Applied Mechanics, 2016
Conference Title:
Conference Title:
24th International Congress of Theoretical and Applied Mechanics
Conference Venue:
Montreal (CA)
Conference Dates:
2016-08-21 / 2016-08-26
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2016-11-15, last modified 2016-11-15
guest ::
