"bed load sediment transport saltation cluster of spherical particles mathematical modelling numerical simulation"@en . . . . "GA103/09/1718" . "2013-12-31+01:00"^^ . . . . . "http://www.isvav.cz/projectDetail.do?rowId=GA103/09/1718"^^ . . . . . "C\u00EDlem projektu je matematick\u00E9 modelov\u00E1n\u00ED a numerick\u00E1 simulace salta\u010Dn\u00EDho pohybu kulovit\u00E9 \u010D\u00E1stice a mraku kulovit\u00FDch \u010D\u00E1stic v\u00A0kan\u00E1le p\u0159i r\u016Fzn\u00FDch podm\u00EDnk\u00E1ch proud\u011Bn\u00ED. Projekt bude zam\u011B\u0159en na sestaven\u00ED numerick\u00E9ho modelu, kter\u00FD zahrnuje v\u0161echny\u00A0d\u00E1le zm\u00EDn\u011Bn\u00E9 druhy\u00A0pohybu jednotliv\u00E9 \u010D\u00E1stic (\u010D\u00E1stice v\u00A0klidu, po\u010D\u00E1tek pohybu, sunut\u00ED \u010Di rotace \u010D\u00E1stice pod\u00E9l dna, saltace, vypad\u00E1v\u00E1n\u00ED a sedimentace \u010D\u00E1stic), jeho roz\u0161\u00ED\u0159en\u00ED pro t\u0159ec\u00ED rychlost prom\u011Bnlivou v\u00A0z\u00E1vislosti na \u010Dase a pod\u00E9l dna kan\u00E1lu i pro drsnost dna\u00A0 m\u011Bn\u00EDc\u00ED se pod\u00E9l dna kan\u00E1lu. D\u00E1le bude studov\u00E1n mechanismus vz\u00E1jemn\u00FDch koliz\u00ED \u010D\u00E1stic a vyvinut numerick\u00FD model salta\u010Dn\u00EDho pohybu mraku \u010D\u00E1stic. Projekt se bude zab\u00FDvat tak\u00E9 anal\u00FDzou po\u010D\u00E1tku a ukon\u010Den\u00ED pohybu \u010D\u00E1stic pro libovolnou drsnost dna, jej\u00ED\u017E struktura bude ur\u010Dena dv\u011Bma parametry, tj. velikost\u00ED a hustotou element\u016F drsnosti." . "0"^^ . . "Numerical model of the bed load transport of particle and cluster of particles under variable flow conditions in a channel"@en . . "Odborn\u00FD p\u0159\u00EDnos projektu spo\u010D\u00EDv\u00E1 zejm\u00E9na v jeho teoretick\u00E9 \u010D\u00E1sti. Byly sestaveny 2D a 3D modely salta\u010Dn\u00EDho pohybu \u010D\u00E1stic, charakteristika v\u00FDsledk\u016F uv\u00E1d\u011Bn\u00E1 \u0159e\u0161itelem je adekv\u00E1tn\u00ED, p\u0159\u00EDnos projektu pro jin\u00E9 obory je omezen\u00FD. U v\u00FDstup\u016F projektu p\u0159eva\u017Euj\u00ED publikace ve sborn\u00EDc\u00EDch mezin\u00E1rodn\u00EDch konferenc\u00ED. Nedostatky v dodr\u017Eov\u00E1n\u00ED grantov\u00FDch pravidel nebo v \u010Derp\u00E1n\u00ED finan\u010Dn\u00EDch prost\u0159edk\u016F nebyly zji\u0161t\u011Bny."@cs . . . "The benefits of the project are mainly in the theoretical part. The 2D and 3D models of particles saltation were assembled. The results of the project are adequate, contribution to other sectors is limited. The outputs of the project are mainly publication in the proceedings of conferences. Deficiencies in compliance with the rules of the grant or disbursement of funds were no found."@en . "Numerick\u00FD model pohybu kulovit\u00E9 \u010D\u00E1stice a mraku \u010D\u00E1stic u dna kan\u00E1lu p\u0159i prom\u011Bnn\u00FDch podm\u00EDnk\u00E1ch proud\u011Bn\u00ED v kan\u00E1le" . "2013-06-06+02:00"^^ . "1"^^ . "2014-07-01+02:00"^^ . "37"^^ . . . "37"^^ . "0"^^ . "2009-01-01+01:00"^^ . . . "The\u00A0goal of the project is mathematical modelling and numerical simulation of a saltational mode of bed load transport of single spherical particle and cluster of particles under variable flow conditions in channel. The project will be focussed on development of the numerical model, which covers the\u00A0further refered\u00A0stages of the bed load transport of a single particle (stationary particle, incipient motion, sliding or rolling along the bed, saltation, stopping of the motion), extension of the model for the shear velocity variable in time and along the channel bed, and for the bed roughness variable along the channel bed. Further, the effect of inter-particles collisions will be studied and finally the numerical model of the bed load transport of cluster of saltating particles will be developed. The project will also deal with analysis of starting and stopping of the particle motion for an arbitrary bed roughness, which structure will be described by two parameters, the bed roughness and the packing density.\u00A0"@en .