Figure 3

Foam slipping friction force per unit length as a function of flow velocity ν for modified SiO2 nanoparticle concentration ranging from 0 wt% to 1.00 wt%, fixed SDBS concentration of 1.0 wt% and fixed foam quality of approximately 90%.

Foam slipping friction force per unit length as a function of flow velocity ν for modified SiO2 nanoparticle concentration ranging from 0 wt% to 1.00 wt%, fixed SDBS concentration of 1.0 wt% and fixed foam quality of approximately 90%.