Investigation of temperature increase associated with liquid deformations at the nanometer scale

• Temperature increase due to film rupturing is derived using the molecular kinetic theory.
• The contribution of the molecular potential of a real fluid is considered.
• The approach is generalized to calculate the temperature increase in polyatomic molecules.
• The temperature increase in thread retraction is also estimated.

The bursting of thin liquid films has been investigated for over a century. Recently, the velocity field and heat generation process in a rupturing film were clarified by numerical studies. In the present study, we discuss the temperature increase due to heat generation in a rupturing film on the basis of the molecular kinetic theory on a microcanonical ensemble, and we estimate the value of the temperature increase. We attempted to generalize the approach for calculating the temperature increase in polyatomic molecules. In addition, we applied the calculation to thread retraction and derived the value of the temperature increase due to heat generation in the system.