"Technická konference Vývojové trendy v čerpací technice" - Search Results - Digital Repository

guest :: login Digital Repository
		Search		Submit		Help		About

Home > Search Results: "Technická konference Vývojové trendy v čerpací technice"

Search:



Search Tips :: Simple Search

Search collections:

Sort by:	Display results:	Output format:

	Design of the acoustic spectrometer for the measurement of the spectrum of cavitation bubbles in water and hydraulic oil Müller, M. ; Zima, Patrik ; Maršík, František The article deals with the design of the experiment for the measurement of the spectrum of cavitation bubbles in water and hydraulic oil. Bubbles of different sizes tend the attenuate most efficiently the excitant acoustic frequency, which is close to their own resonance frequency. The acoustic response of the flowing bubbles to several different excitation frequencies enables to determine the number density of bubbles. The result of the analysis is a system of integral equations. The solution of the systems yields the size spectrum of the bubbles. Detailed record
	Cavitation tunnel and its integration into the closed circuit of the hydraulic test-rig of SIGMA VVÚ s.r.o Sedlář, M. ; Zima, Patrik ; Komárek, M. The article presents the design of the water cavitation tunnel for the research of cavitating flows and its integration in the hydraulic test rig of SIGMA VVÚ in Lutín. In addition, the article presents the analysis of the flow around the test hydrofoil in the tunnel using the numerical codes CFX Ansys and NEPTUNE (the proprietary software of SIGMA VVU). Detailed record
	Nucleation theory for the description of cavitation in water Němec, Tomáš ; Maršík, František The Classical Nucleation Theory (CNT) is a powerful tool for the description of nucleation processes whose development started more than a century ago. It proved its strength above all in dealing with the condensation phenomena, and it is quite accurate when describing not only the nucleation in pure water vapor but also evaluating the influence of admixtures, e.g. sulfuric acid, alcohols, mineral salts. Such a multicomponent approach was not yet applied in the case of cavitation processes; the CNT predictions are restricted to pure water, and the role of other components of the cavitating medium are implemented ad-hoc. This paper describes the influence of a gas dissolved in water (e.g. oxygen, nitrogen, carbon dioxide) on the nucleation process in cavitation. Detailed record

Interested in being notified about new results for this query?
Subscribe to the RSS feed.

Digital Repository :: :: :: ::
Powered by v1.1.2
Maintained by

This site is also available in the following languages:
Česky English