. . . "0"^^ . . "Effect of surfactants on the multiphase flow dynamics"@en . . "http://www.isvav.cz/projectDetail.do?rowId=GAP101/11/0806"^^ . . . . "surface active agents two-phase flow bubble drop adsorption wetting"@en . "GAP101/11/0806" . . "Vliv povrchov\u011B aktivn\u00EDch l\u00E1tek na proud\u011Bn\u00ED ve v\u00EDcef\u00E1zov\u00FDch syst\u00E9mech" . . "2013-06-06+02:00"^^ . . . . "2014-07-01+02:00"^^ . "2013-12-31+01:00"^^ . . "V\u00A0projektu bude studov\u00E1n vliv povrchov\u011B aktivn\u00EDch l\u00E1tek (surfaktant\u016F) na dvouf\u00E1zov\u00E1 proud\u011Bn\u00ED, se zam\u011B\u0159en\u00EDm zvl\u00E1\u0161t\u011B na dvouf\u00E1zov\u00E1 proud\u011Bn\u00ED typu \u201Ebubliny v\u00A0kapalin\u011B\u201C a \u201Ekapky v\u00A0jin\u00E9, nem\u00EDsiteln\u00E9 kapalin\u011B\u201C. N\u011Bkolik vybran\u00FDch situac\u00ED, ve kter\u00FDch vliv surfaktant\u016F nelze popsat pouhou zm\u011Bnou povrchov\u00E9ho nap\u011Bt\u00ED kapaliny, bude studov\u00E1no experiment\u00E1ln\u011B. T\u011Bmito situacemi jsou (i) tvarov\u00E9 oscilace bubliny/kapky, a\u0165 ji\u017E voln\u011B stoupaj\u00EDc\u00ED, nebo zachycen\u00E9 na hrotu kapil\u00E1ry; experiment bude zam\u011B\u0159en na vliv surfaktant\u016F na frekvenci a dobu \u00FAtlumu oscilac\u00ED; (ii) koalescence bublin/kapek, a t\u00E9\u017E jejich p\u0159ilnut\u00ED na pevn\u00FD povrch; studium se zam\u011B\u0159\u00ED na dynamiku tenk\u00E9ho filmu, kter\u00E1 koalescenci nebo p\u0159ilnut\u00ED br\u00E1n\u00ED; (iii) n\u00E1raz bubliny/kapky na st\u011Bnu, s\u00A0d\u016Frazem na pozorovan\u00FD jev, kdy surfaktanty potla\u010Duj\u00ED odraz bubliny od st\u011Bny a m\u011Bn\u00ED t\u00E9\u017E dobu nutnou pro p\u0159\u00EDpadn\u00E9 p\u0159ilnut\u00ED bubliny/kapky ke st\u011Bn\u011B. C\u00EDlem v\u00FDzkumu je popsat a objasnit vliv jin\u00FDch povrchov\u00FDch vlastnost\u00ED, ne\u017E je povrchov\u00E9 nap\u011Bt\u00ED, na dvouf\u00E1zov\u00E1 proud\u011Bn\u00ED." . . . . "The effect of surface-active agents on two-phase flows will be studied. Flow types \u201Cair bubbles in the liquid\u201D and \u201Cliquid drops in another immiscible liquid\u201D will be focused. Some specific situations, in which the surfactants modify the flow at the bubble/drop scale and in which this modification cannot be explained by a simple change of the equilibrium surface tension, will be investigated experimentally. These situations are (i) the shape oscillations of a bubble/drop, either freely-rising or attached at a capillary tip; focus is put on the modification of oscillation frequency and decay time by surfactants; (ii) the coalescence of bubbles/drops, and also their attachment to a solid surface, with a focus on the drainage of liquid film between them; (iii) the bubble-solid surface collision, with a focus on suppression of the bubble rebound caused by surfactants and also on the modification of the attachment time. The research should enlighten and document the effect of interfacial properties other than surface tension on two-phase flows."@en . "1"^^ . "The main contribution is the description of the oscillatory dynamic of bubble and drop, a description of the interaction of a bubble and a solid particles and experimental data on behavior of three-phase contact line after attachment of a bubble to a hydrophobic surface. All project goals were achieved. Publications of project findings are sufficient."@en . "1"^^ . "27"^^ . . "27"^^ . "Projekt p\u0159inesl nov\u00E9 poznatky v oblasti dvouf\u00E1zov\u00E9ho proud\u011Bn\u00ED. Tyto poznatky lze vyu\u017E\u00EDt v \u0161irok\u00E9m spektru v\u00FDzkumn\u00FDch oblast\u00ED. Hlavn\u00EDm p\u0159\u00EDnosem je popis dynamick\u00FDch oscilac\u00ED bublin a kapek, popis interakce bublin a pevn\u00FDch \u010D\u00E1stic a experiment\u00E1ln\u00ED data o chov\u00E1n\u00ED t\u0159\u00ED-f\u00E1zov\u00E9 kontaktn\u00ED \u010D\u00E1ry po p\u0159ipojen\u00ED bubliny k hydrofobn\u00EDmu povrchu. Projekt splnil v\u0161echny sv\u00E9 c\u00EDle. Publika\u010Dn\u00ED \u010Dinnost je dostate\u010Dn\u00E1."@cs . . "2011-01-01+01:00"^^ .