Details

Autor(en) / Beteiligte

• BANKOFF, S. G.
• JOHNSON, M. F. G.
• MIKSIS, M. J.
• SCHLUTER, R. A.
• LOPEZ, P. G.

Titel

Dynamics of a dry spot

Ist Teil von

• Journal of fluid mechanics, 2003-07, Vol.486, p.239-259, Article S0022112003004634

Ort / Verlag

Cambridge, UK: Cambridge University Press

Erscheinungsjahr

2003

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Experimental results are presented for the motion of a dry spot in a thin viscous film on a horizontal surface. These include global and spatial measurements of dry spot diameter, front velocities, static and dynamic contact angle, and the shape of the liquid–solid interface. Data are presented as a function of initial fluid depth for both an advancing fluid front of a collapsing dry spot and a receding fluid front of an opening dry spot. Results for both cases show that the final or static hole diameter increases as the initial fluid depth decreases. Also, insight is obtained into the relationship between the contact angle and the velocity for both advancing and receding fluid fronts. The experimental results are compared to a lubrication model, and good agreement is obtained.