On male urination and related environmental disease transmission in restrooms: From the perspectives of fluid dynamics.

Indoor transmission of COVID-19 is highly probable. Multiple sources have verified that the SARS-CoV-2 can be detected within toilets, and people can be infected in restrooms. There is a huge gap in the coronavirus transmission mechanism in restrooms.

Experimental study on the electrohydrodynamic deformation of droplets in a combined DC electric field and shear flow field.

A visualization experiment was conducted to investigate the electrohydrodynamic deformation of droplets in a combined DC electric field and shear flow field. Detailed experimental data on both the transient and steady droplet deformation parameters () and orientations ( ) are provided at > and < (: conductivity ratio; : permittivity ratio) under different electric field and shear flow field combinations. The internal flow characteristics of the deformed droplet were also examined via the digital particle image velocimetry (DPIV) method.