Saltation of sand in vicinity of cylindrical column

0393880 - ÚH 2014 RIV CZ eng K - Konferenční příspěvek (tuzemská konf.)
Kharlamova, Irina - Kharlamov, Alexander - Vlasák, Pavel
Saltation of sand in vicinity of cylindrical column.
ENGINEERING MECHANICS 2013. Praha: Insitute of Thermomechanics ASCR, v. v. i., 2013 - (Zolotarev, I.), s. 273-278. ISBN 978-80-87012-46-8. ISSN 1805-8248.
[ENGINEERING MECHANICS 2013 /19./. Svratka (CZ), 13.05.2013-16.05.2013]
Grant CEP: GA ČR GA103/09/1718
Výzkumný záměr: CEZ:AV0Z20600510
Institucionální podpora: RVO:67985874
Klíčová slova: saltation of sand * flow around cylinder * logarithmic profile * dipole line * averaged turbulent flow
Kód oboru RIV: BK - Mechanika tekutin

The paper presents a model of sand sediment transport in water stre am in vicinity of a high cylindrical col umn. It is assumed that an averaged turbulent flow is horizontally layered in vicinity of the cylinder. In ea ch layer the flow around the cylinder is modelled as a potential flow generated by a vertical dipole line. Flow in viscous sub-layer on the surface of the cylinder is neglected. The presented flow model is approximate; however it is simple for use. Trajectories of saltating particles near the cylinder were calculated. Further investigation of such flow will allow a determination of zones where solid particles will collide with the column. That might be useful for prevention of its damage or destruction
Trvalý link: http://hdl.handle.net/11104/0222239