نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده مهندسی مکانیک دانشگاه تربیت مدرس
2 گروه تبدیل انرژی، دانشکده مهندسی مکانیک، دانشگاه تربیت مدرس، تهران، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
A detailed study of the physics of the cavitation phenomenon and the energy released from it is necessary because of its use in cases such as cleaning surfaces, delivering medicine to various organs of the body, treating cancer, and burning excess fat. The purpose of this research is to investigate the dynamics of bubble growth and collapse near the solid wall. In this research, to simulate the bubble collapse and also to calculate the pressure, temperature, and density changes, The obtained results show that the dimensionless gamma number has the greatest effect on the growth and collapse of the bubble near the wall. In the studied range of the dimensionless gamma number, with a 60% increase in this number, the maximum shear stress on the wall decreases by 37%, and the maximum absolute temperature inside the bubble increases by 12%. Also, with the increase of the dimensionless number of gamma, the area affected by the impact of the jet due to the bubble collapse increases. In addition, it can be shown that the initial pressure parameter of the bubble has the greatest effect on the maximum temperature inside the bubble. In the range of the initial pressure inside the bubble considered in the current research, with a 50% increase in the initial pressure of the bubble, the maximum temperature of the bubble decreases by 6%;
کلیدواژهها [English]
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