Ultrasound in wet materials subjected to drying: A modeling study

The aim of this paper is to present wave phenomena induced by the external action of ultrasound on porous wet materials subjected to drying. The purpose of these studies is to analyze the distribution of ultrasonic waves in such a complex medium and to discover the mechanism of ultrasonic interactio...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2015-05, Vol.84, p.998-1007
Main Author: Kowalski, S.J.
Format: Article
Language:English
Subjects:
Biological
Drying
Drying materials
Elevation
Fruits
Mass transfer
Modeling
Moisture
Porosity
Ultrasound
Vegetables
Wave decomposition
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Summary:The aim of this paper is to present wave phenomena induced by the external action of ultrasound on porous wet materials subjected to drying. The purpose of these studies is to analyze the distribution of ultrasonic waves in such a complex medium and to discover the mechanism of ultrasonic interaction with both the solid skeleton and moisture in pores. The results obtained here should allow to state how ultrasonic waves are distributed in such material depending on ultrasonic frequency and on resistance between relative motion of the constituents. This knowledge may help to explain enhancement of the drying mechanism by ultrasound, and in particular in biological products such as fruits and vegetables where a significant elevation of temperature is not required.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2015.01.086