. . "Loukertchenko, Nikolai" . . "Ivanova, Irina" . . "Saratov" . . "Saratov" . "Ch\u00E1ra, Zden\u011Bk" . "Stopping of sand sediment transport criteria"@en . . . "5"^^ . . "Ivanova, Irina" . "[D841BEE58B9B]" . "RIV/67985874:_____/08:00319451" . "2008-05-27+02:00"^^ . . . "V\u00FDsledky numerick\u00FDch experiment\u016F s vyu\u017Eit\u00EDm vlastn\u00EDho 3D numerick\u00E9ho modelu saltace kulovit\u00E9 \u010D\u00E1stice ukazuj\u00ED, \u017Ee doch\u00E1z\u00ED k ukon\u010Den\u00ED pohybu p\u00EDs\u010Dit\u00E9 \u010D\u00E1stice un\u00E1\u0161en\u00E9 vodou v koryt\u011B s drsn\u00FDm dnem pokud hodnota transportn\u00EDho parametru \u03B7 = \u03C4* / \u03C4*c klesne pod 0,4 (pro hodnoty bezrozm\u011Brn\u00E9ho parametru \u010D\u00E1stice 10 < D* < 100) pro pom\u011Br drsnosti dna a pr\u016Fm\u011Bru \u010D\u00E1stice ks/d = 1. Hodnota transportn\u00EDho parametru \u03B7 = 0,4 odpov\u00EDd\u00E1 hodnot\u011B t\u0159ec\u00ED rychlosti u*s 2/3 u*c , kde u*c je kritick\u00E1 t\u0159ec\u00ED rychlost odpov\u00EDdaj\u00EDc\u00ED po\u010D\u00E1tku pohybu \u010D\u00E1stic. Pokud pom\u011Br ks/d roste v mez\u00EDch 0,67 a\u017E 1,33, m\u011Bn\u00ED se hodnota transportn\u00EDho parametru \u03B7 od 0,3 do 0,5."@cs . . . "Kriterium ukon\u010Den\u00ED pohybu p\u00EDs\u010Dit\u00E9 \u010D\u00E1stice"@cs . "Stopping of sand sediment transport criteria" . "The results of the numerical experiments of the spherical particle saltation based on the 3D numerical model developed by authors show that the sand particle transported by water in channel with a rough bed stops when the value of the transport stage \u03B7 = \u03C4* / \u03C4*c decreases to value less than 0.4 (for the dimensionless particle parameter D* varying from 10 to 100) for the bed roughness / particle diameter ratio ks/d = 1. The value of transport stage \u03B7 = 0.4 corresponds to the shear velocity value u*s 2/3 u*c, where u*c is the critical shear velocity corresponding to the incipient motion of the particles. If the ratio ks/d increases from 0.67 to 1.33 the value of the stopping transport stage \u03B7s increases from about 0.3 to about 0.5."@en . "Kriterium ukon\u010Den\u00ED pohybu p\u00EDs\u010Dit\u00E9 \u010D\u00E1stice"@cs . . . "397534" . "Stopping of sand sediment transport criteria"@en . . "Loukertchenko, Nikolai" . "The results of the numerical experiments of the spherical particle saltation based on the 3D numerical model developed by authors show that the sand particle transported by water in channel with a rough bed stops when the value of the transport stage \u03B7 = \u03C4* / \u03C4*c decreases to value less than 0.4 (for the dimensionless particle parameter D* varying from 10 to 100) for the bed roughness / particle diameter ratio ks/d = 1. The value of transport stage \u03B7 = 0.4 corresponds to the shear velocity value u*s 2/3 u*c, where u*c is the critical shear velocity corresponding to the incipient motion of the particles. If the ratio ks/d increases from 0.67 to 1.33 the value of the stopping transport stage \u03B7s increases from about 0.3 to about 0.5." . "Saratovskij gosudarstvennyj techni\u010Deskij universitet" . . . "4"^^ . "RIV/67985874:_____/08:00319451!RIV09-AV0-67985874" . "4"^^ . "Vlas\u00E1k, Pavel" . . "978-5-7433-1983-1" . "P(GA103/06/1487), Z(AV0Z20600510)" . . "Stopping of sand sediment transport criteria" . "spherical particle saltation; saltation stopping; umerical experiments; 3D numerical model"@en . "MMTT-21: Matematicheskije Metody v Nauke i Technologijach" . .