The article is devoted to the study of process particle agglomeration in cross ultrasonic fields. It has been established that achieve high efficiency agglomeration, it most effective carry out comprehensive exposure using a tubular emitter and two longitudinally oscillating emitters installed at ends. At same time, control structure generated acoustic field change centers coagulation particles, proposed periodic modes vibration (bending-radial radial). To retain particles during switching...

The article provides the results of studies and developments aimed at addressing problem smoke deposition (coagulation) in order to increase efficiency fire suppression (detection ignition source) ensure evacuation people from generation center. possibility affecting with mechanical oscillations ultrasound frequency high level sound pressure able implement process acoustic coagulation, i.e., merging solid particles subsequent deposition, have been considered. For practical implementation...

The article is devoted to the study of influence high temperature on operation ultrasonic disk radiator intended for generation high-intensity vibrations in gaseous media. As a result researches it was determined, that increase gas and led rise vibration amplitude surface fall level acoustic pressure owing reduction density.

Abstract The article presents the results of research aimed at increase efficiency gas cleaning equipment based on Venturi tube using high-intensity ultrasound. model known laws hydrodynamics multiphase mediums dust-extraction in scrubbers was proposed. Modification this taking into account ultrasonic field allows evaluating optimum modes (sound pressure level) and conditions (direction field, square number sources) influence. It is evaluated that for efficient mode action frequency 22 kHz...

This study validates the mechanism of ultrasonic dehydration without transition water into vapor. The process can be realized by cavitation dispersion liquid initiated collapse bubbles cylindrical shape formed in capillaries. developed mathematical model considers complete life cycle bubbles, encompassing three stages: slow growth, rapid expansion with deformation, and collapse. optimum range sound pressure level from 150 dB (critical level) to 170 (limit at which capillaries takes place has...

The article presents the results of studies aimed at definition acoustic energy value introduced into gas medium by ultrasonic apparatuses with disk radiators measuring consumed electric power devices different levels static pressure in a closed volume. It is shown, that developed procedure allows obtaining real values radiated as opposed to methods based on measurements level single pointes insonified technological medium.

The method for increasing the separation efficiency of particles smaller than 2.5 micrometers by combined ultrasonic agglomeration and swirling flow technique is proposed in article. creates areas with an increased concentration on outer radius vortex. exposure these leads to more efficient formation agglomerates many times larger original particles. resulting are easily separated from gas flow. design agglomerator was developed. vortex velocity determined, at which increases average...

In the article results of researches on efficiency definition ultrasonic coagulation ready nanodispersed product are presente. Developed measuring bench allowed to control changes concentration nanoparticles due their agglomeration at application high-intensity vibrations.

For the spraying of liquids and coating process at high-tech productions method ultrasonic in a layer having number advantages such as low energy capacity, high productivity, fine-dispersity obtained aerosol absence agent, is used. However main problem application reliable dependences characteristics (drop diameter productivity) on liquid properties (viscosity, surface tension), modes (frequency vibration amplitude surface) conditions (the thickness layer) action. In order to determine these...

This article describes the prospects of applying ultrasonic vibrations to increase efficiency gas-dispersed flow separation on example vortex tube. Developed model containing solid particles is described. The specific feature in consideration particle coagulation caused by high-intensity vibrations. characteristics gas and influence providing minimum time fine continuous phase are determined.

The article is devoted to the process of liquid spraying by ultrasonic radiator in form disk. New functional possibilities disk radiators during were studied. results productivity and power inputs for at application different systems fluid supply obtained.

The article presents the results of theoretical and experimental studies aimed at determination optimum conditions ultrasonic action (geometry technological volume) for cavitation treatment high-viscous non-Newtonian liquids. Developed model generation area lets determine distribution zone in volumes various sizes forms. Carried out allow prove adequacy proposed possibility to increase volume developed zones by optimization action.

The article is devoted to the development of ultrasonic radiator in form stair-step plate. influence sizes on frequency and vibration amplitude studied. On base represented calculations it was determined set recommendations for designing such radiators.

This paper describes the studies conducted in order to identify limits of ultrasonic exposure’s effect on fine particle coagulation process. It has been established as a result that exposure with sound pressure level 160 dB is capable ensuring particles sized 2.5 µm efficiency δ = 83%. An increase up 13% induced generation swirling flows. The suggested approach increasing owing vortex-type flows between radiating and reflecting surfaces ensures 96 %. implementation this shown acoustic flows,...