Evaluation of the sound field in ultrasonic atomization using a horn

Abstract

Efficiency of ultrasonic atomization can be enhanced by using a horn, where the sound pressure amplitude increases. In the present paper, the effects of a horn on the atomization rate and the sound field have been evaluated by changing the tip diameter of the horn. As a result, by decreasing the horn tip diameter, the maximum sound pressure became higher, but it was revealed that the high sound pressure was limited to the interior of the horn and the very small region near the horn tip because of the diffraction of the sound wave.

Study on the efficiency of a transducer for sonochemistry by calorimetry

“…Sonochemistry, which uses ultrasound in water to induce or enhance chemical reactions, has been applied to synthesis, [1][2][3][4][5][6] decomposition, [7][8][9] dispersion, [10][11][12] aggregation, 13,14) agitation, 15) extraction, 16) cleaning, 17,18) atomization, [19][20][21][22] CO 2 capture and storage, 23,24) and wastewater treatment. 25) The performance of a sonochemical reactor can be evaluated through dosimetry measurements of the amount of substance in the reacted material.…”

Noncontact manipulation of particles in air by switching pulse drive of ultrasonic speakers arrayed on a semicylinder

“…8) The authors have studied an ultrasonic mechanistic application. [9][10][11][12][13][14][15][16][17] In recent years, many studies have been carried out to trap objects in a sound field formed by arranging a number of small ultrasonic speakers used for ultrasonic sensors.…”

Direct atomization of water drops using a transverse vibrating plate ultrasonic source

“…7,8) Technologies that use aerial ultrasonic energy include ultrasonic agglomeration, 9,10) ultrasonic drying, 11,12) and ultrasonic atomization. [13][14][15][16][17][18] Liquids can also be atomized by applying heat, but this method may cause physical and chemical changes in the liquid.…”