Abstract
The paper presents the model of ultrasonic cavitation depolymerization which is destruction of oil macromolecules under cavitation. The model allows to evaluate optimum modes and conditions of ultrasonic influence, providing reducing oil viscosity at low temperatures. The model is based on probability approach which allows to simplify the task of cavitation depolymerization calculation in order to solve the system of self-similar equations for macromolecules with different weights concentration. The equations include probability of macromolecules destruction. The probability is determined by cross-section of collision of macromolecules pair and possibility of macromolecule destruction at contact with another molecule. The calculations have shown that the cavitation reduces the modal molecular weight up to 2 times. It causes reducing the oil viscosity up to 4…10 times. This has great actuality for oil transferring at low temperatures.
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