Model of ultrasonic cavitation depolymerization of oil for evaluation of optimum modes and conditions providing reducing viscosity at low temperatures

5th All-Russian Conference with International Participation POLAR MECHANICS

地球科学;力学

Golykh, R.N.^1

Biysk Technological Institute (Branch), Altai State Technical University Named after I.I. Polzunov, Czech Republic^1

关键词: Low temperatures;    Oil viscosity;    Probability approach;    Self-similar equations;    Ultrasonic cavitation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/193/1/012012/pdf
DOI  :  10.1088/1755-1315/193/1/012012

学科分类：力学，机械学

来源: IOP

【 摘 要 】

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.