Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
The article shows the results of theoretical and experimental studies of the process of centrifugal trapping particulate matter using the developed two-stage gas cleaning equipment. Design features of the proposed and created equipment based on an agglomeration with ultrasonic disc radiators, acting as a first stage of trapping are described. The second step is the capture device with a counter-swirling...
The article presents the results of experimental studies aimed at the determination of conditions and modes of action by high-intensity ultrasonic vibrations for the acceleration of drying process of the textile materials at high-speed flow of drying agent. To carry out studies it was developed special purpose stand with the radiator of ultrasonic vibrations, which is able to generate vibrations with...
The article investigates the influence of the anisotropy of the mechanical properties of the material on the distribution of ultrasonic vibrations of disk radiators for creating high-intensity vibrations in the gas-dispersed environments. As a result, studies show that at 4.5% reduction in anisotropy occurs uniform oscillation amplitude is more than 5 times.
The article is devoted to theoretical researching of process of two-stage high-disperse atomization of liquids including the process of primary formation of large drops at ultrasonic (US) action on thin film of liquid and further disintegration of drops under action of high-frequency ultrasonic field in air-drop medium. It was found the physical principle and it was offered the mathematical model...
The paper presents the development and determination of demands to the experimental setup for research of the effectiveness of ultrasonic intensification of gas component absorption by liquid. The theoretical studies of absorption kinetics carried out for the determination of requirements to the setup. Determinated requirements based on the theoretical results for the geometrical dimensions of technological...
The article is devoted to investigation of the influence of secondary vibration modes in the uniformity of the working ring disk mode ultrasonic radiators. In the first part the article refers to application of ultrasonic vibrations for various processes intensification. Further article considers methods, allowing reduce quantity secondary mode in investigated frequency range, which can render influence...
The separation of gas mixtures both existing in nature and generating as a result of any chemical reaction is one of the necessary stages of the production of oxidizers, inert or combustion gases, which are applied in industry, technic, medicine and in autonomous life support systems. The article proposes the method of efficiency increase of gas separation based on the use of ultrasonic action for...
The article presents the results of studies aimed at the definition of acoustic energy value introduced into gas medium by ultrasonic apparatuses with the disk radiators measuring consumed electric power of the ultrasonic devices at different levels of gas medium static pressure in a closed volume. It is shown, that developed procedure allows obtaining real values of radiated acoustic power as opposed...
This paper proposes a new approach to improve the efficiency of coagulation of dispersed particles in liquid. The approach is based on the ultrasonic treatment as a sequence of wave packets (ultrasonic pulses) of finite duration that is less than cycle period. The impact of ultrasonic pulses reduces the maximum cavitation nuclei radius achieved during direct diffusion of dissolved gas into the cavitation...
The article shows the prospects of application of ultrasonic vibrations for efficiency increase of gas-dispersed flow separation at the example of vortex tube. The model of gas-dispersed flow separation containing solid particles was developed. The main feature of the model is the coagulation of particles by high-intensity vibrations. It was determined characteristics of the flow and the parameters...
The article considers the approach to the realization low-temperature spray drying of sour milk products, which is based on the application of ultrasonic action for atomization of raw material and also at the interaction of drops generated by the atomization with the flow of drying agent (air). It is shown, that ultrasonic action both at the stage of spraying and at the stage of interaction of drops...
The article describes the model of the interaction of cavitation zone formed under the action of ultrasonic vibrations and interphase boundary of gas and liquid media, which spreads on solid surface in the form of liquid layer. It is shown that this interaction leads to the generation of capillary waves and consequently to the increase of efficiency of physical-chemical processes due to enlarged “liquid-gas”...
The article presents the results of theoretical and experimental studies aimed at the determination of optimum conditions of the ultrasonic action (geometry of the technological volume) for the cavitation treatment of high-viscous and non-Newtonian liquids. Developed model of the generation of the cavitation area lets determine distribution of the cavitation zone in the technological volumes of various...
The article is devoted to the development of the waveguide-tool for the action on wounds and wound infection. Depending on the purposes the waveguide-tools and their radiating endings make different types of vibrations both longitudinal and fexural ones with different amplitudes.
The article presents the results of studies on determination of optimum modes and conditions of the draining extraction of wound contents from human tissues by contact ultrasonic action. To optimize modes and conditions of the action we propose physical-mathematical model of converse capillary ultrasonic effect allowing determine extraction rate depending on amplitude of ultrasonic vibrations, area...
The article is devoted to the study of influence of high temperature on the operation of the ultrasonic disk radiator intended for generation of high-intensity vibrations in gaseous media. As a result of researches it was determined, that temperature increase of gas and the radiator led to the rise of vibration amplitude of the surface of the disk radiator and the fall of level of acoustic pressure...
The article presents the results of the studies aimed at the ways of efficiency increase of the dust-extraction unit operation on the base of Venturi pipe due to action of high-intensity ultrasonic vibrations. Carried out theoretical analysis of dust-extraction unit operation let determine the possibility of efficiency increase and dust reduction of gas at the output of the plant at the application...
This article describes the prospects of applying of ultrasonic vibrations to increase efficiency of gas-dispersed flow separation on the example of the vortex tube. Developed model of the separation of gas-dispersed flow containing solid particles is described. The specific feature of the model is in consideration of particle coagulation caused by high-intensity ultrasonic vibrations. The characteristics...
The article presents the results of studying of the process of aggregate formation at the ultrasonic coagulation of submi-cron particles. The results are obtained on the base of mathematical modeling of translatory motion and rotary motion of the couple of particles under the action of ultrasonic field. The novelty of proposed model is in the fact that specific feature of flow of small-scale particles...
The article presents the phenomenological model of the formation of cavitation area in high-viscous and non-Newtonian liquids. Proposed model is based on the study of the formation of cavitation area as a whole but taking into account the main effects and phenomena occurring inside this area. The analysis of the model allows revealing optimum intensities of the ultrasonic influence, which are necessary...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.