The paper titled “On the gas pressure inside cavitation bubbles” led by ITU Mathematics Engineering faculty member Res. Assis. Dr. Şenay Pasinlioğlu was published in “Physics of Fluids”.

In this paper, we investigate the validity of the reduced order [Delale and Pasinlioglu, AIP Adv. 11, 115309 (2021)] and of classical polytropic gas pressure laws during the response of a bubble to variations in the pressure of the surrounding liquid. We first derive the exact expression of the gas pressure inside the bubble in the uniform pressure approximation. Then, we identify the conditions of the validity where the reduced order gas pressure law and the classical polytropic law hold. We present the results of the temporal evolution of the bubble radius, the bubble wall temperature, and the partial gas pressure inside the bubble by using an acoustic cavitation model based on the reduced order gas pressure law for both constant and variable interface properties.