000003764 001__ 3764
000003764 005__ 20141118153347.0
000003764 04107 $$acze
000003764 046__ $$k2008-05-12
000003764 100__ $$aKharlamov, A.
000003764 24500 $$aINCEPTION OF SALTATION MODE OF SEDIMENT TRANSPORT

000003764 24630 $$n14$$pEngineering Mechanics 2008
000003764 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Brno
000003764 506__ $$arestricted
000003764 520__ $$2eng$$aThe bed load transport usually occurs in three consecutive modes: rolling, saltation, and suspension. The start of rolling motion is investigated widely, and different models are constructed and calibrated using available experiments. There are available few experiments and models for threshold between rolling and saltation. Herein the threshold of saltation in turbulent flow was determined and presented in common variables introduced by Shields (1936). The additional dimensionless parameter characterizing the bed surface formation was introduced. For the condition of the threshold there was chosen the equality of the submerged gravitational force and the lift force on a bed particle. For the low-studied shear induced lift force there were used data on well studied Magnus force on a rotating ball moving translationally in calm water. The critical shear stress as function of bed particle Reynolds number was determined analytically and reported in graphical form for different values of the bed parameter. The obtained results agree with available experiments on saltation start.

000003764 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000003764 653__ $$a

000003764 7112_ $$aEngineering Mechanics 2008$$cSvratka (CZ)$$d2008-05-12 / 2008-05-15$$gEM2008
000003764 720__ $$aKharlamov, A.$$iVlasak, P.$$iChara, Z.
000003764 8560_ $$ffischerc@itam.cas.cz
000003764 8564_ $$s537244$$uhttps://invenio.itam.cas.cz/record/3764/files/Kharlamov_FT.pdf$$y
             Original version of the author's contribution as presented on CD, , page 418.
            
000003764 962__ $$r3717
000003764 980__ $$aPAPER