4035

3812

كارشناسي ارشد

فيزيك

اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك

1386

نه، 127، [II] ص:. مصور، جدول، نمودار

ص. ع. به فارسي و انگليسي

1396/03/03

كتابنامه

فيزيك

فيزيك

ID3812

به قارسي و انگليسي: قابل رويت در نسخه ديجيتال

Abstract Moving single bubble sonoluminescence has been discovered after searches to find thefluids other than water for observing SBSL and have been studied recently The main propertyof these fluids is their more viscosity rather than water In this thesis after introducing theforces which act on sonoluminescing bubble the moving of the bubble have been simulated For this purpose the bubble s equation of motion is coupled with the Rayleigh Plesset andtemperature equations For solving these equations we have used the Runge Kutta method We have shown that the path of bubble is the same as an ellipsoidal movement near the centerof the flask We have also shown that the history force is the reason for this behavior of thebubble motion As when it is eliminated from the bubble equation of motion the bubble willbe stationary at the center of the flask One of the main results of this simulation is that the maximum temperature at collapsemoment of bubble is increased by reducing the distance of the bubble from the center offlask Due to direct relation between light emission and the temperature of the bubble thesame result can be get for intensity of the light In other words we have shown that theintensity of the emitted light from bubble oscillates Accordingly we propose that themeasurement of the light oscillation from the moving bubble is as a criterion for experimenton moving single bubble sonoluminescence For describing the inner properties of the bubble isothermal and non isothermal models areused In addition to inner properties of the bubble the translational properties are alsodifferent in the two different models In this thesis we have investigated the influences of themodels in the simulation results Finally by comparison between the results of moving andstationary sonoluminescing bubble the effects of the bubble movement on the importantparameters such as radius and temperature of the bubble are investigated

ظفرالله كلانتري

محمدحسن علامت ساز

اكبرپروازيان، فرهاد شهبازي