National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Dvou-strukturní model termodynamických vlastností a povrchového napětí podchlazené vody
Hrubý, Jan ; Holten, V.
A thermodynamic model was developed describing the liquid and gaseous phases of water. The model correctly represents the strong anomalous behavior of supercooled water. The anomalies are due to the vicinity of liquid-liquid critical point. The model approximates liquid water as a mixture of two competing structures (high- and low-density structure) and cavities. The thermodynamic state is found by minimizing the Gibbs free energy with respect to the proportion of the two structures and number of cavities. The mixture approach is further used to model the surface tension.
Klasická nukleační teorie-Poznámky k parním turbinám
Němec, T. ; Maršík, František
The Classical Nucleation Theory (CNT) is modified to treat a special case of admixtures - electrolytes. Thermodynamic features of aqueous electrolytic solutions are described in a slightly different way from that for ordinary liquid mixtures. Namely, the excess Gibbs energy is expressed in terms of the osmotic coefficient and the mean stochiometric activity coefficient instead of the activity coefficients.
Rozložení energie v kavitační bublině během jejího růstu a kolapsu
Müller, M. ; Maršík, František ; Garen, W.
Shock wave generation during the bubble growth and collapse and the corresponding energy separation were investigated experimentally. The calculation of the shock wave energy was based on the experimentally determined shock wave velocity profile. The possibility of using the similarity solution to determine the shock wave intensity is discussed. The velocity field around the collapsing bubble was visualized and compared with the numerical simulation using the commercial FLUENT code.

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