999C1a:GA101/99/0625 - Výsledky hledání - Digitální repozitář

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	Dynamics of a bubble in variable pressure and temperature fields of a liquid Zima, Patrik ; Maršík, František A study of nucleation and growth of bubbles in a liquid by means of a method based on the nucleation pulse in a shock tube is proposed. The nucleation of bubbles in the shock tube is initiated by a sudden depressurization due to the expansion of the liquid. It is assumed that the nucleation is homogeneous and the nucleation rate and the growth of bubbles can be evaluated using the light scattering method. Description of the experimental setup and analytical solution of the expansion of water in a shock tube are given. The theory of radial dynamics of a spherical vapor/gas bubble in a liquid is then employed in the form of the Rayleigh-Plesset equation and some aspects of inertially controlled bubble growth are discussed. The governing equation and conditions for mass transfer across the bubble boundary due to diffusion of the contaminant gas are given. Úplný záznam
	Binary and multi-component homogeneous nucleation in aqueous systems: A process or a thermophysical property? Hrubý, Jan ; Maršík, František We present a detailed treatise of selected parts of the binary nucleation theory, focussing on the problems arising for aqueous systems. Although nucleation depends, in general, on the history of the process, in most cases it can be approximated as quasi-stationary and the nucleation rate should be considered a thermophysical property. Even in fully transient cases, nucleation is predictable based on a set of thermophysical data. Úplný záznam
	Analýza a vývoj relativně jednoduchých algebraických rovnic stavu Bayer, Zdeněk Analýza a vývoj relativně jednoduchých algebraických rovnic stavu. Úplný záznam
	Analysis and development of volume-functions of two-constant equation of state applicable in a broader range of critical compressibility factors than up to now Bayer, Zdeněk It was found that in equations of state (EOS) of the van der Waals type the function describing the least incompressible volume (coefficient b) should also decrease with the growing critical compressibility factor (CF). Ten new two-constant (2c) volume-functions and for comparison also a similar group of 3c EOS are presented which should be more universal than until now developed EOS. Also expressions following from the critical point conditions are given. Úplný záznam
	Finite volume method development for solution of 2D viscous fluid flow Zúňiga, G. ; Maršík, František ; Kozel, Karel A two-dimensional Finite Volume Method for solving the stationary incompressible non-dimensionalized Navier-Stokes equations is developed and employed to investigate the velocity and pressure fields in a non-orthogonal grid configuration. The method is tested on NACA0012 and Double Arc Airfoils. Numerical results are compared with the experiments of IT CAS for velocity and law Reynolds number (Re = 400) to the agreement rather good. Úplný záznam

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