ARTICLE:

• Observations of the Thermal Boundary Layer Flow along a Vertical Wall with a Square Obstruction in a Side-heated Cavity  download article

John C. Patterson
School of Engineering, James Cook University, Townsville QLD 4811, Australia

F. Xu
School of Engineering, James Cook University, Townsville, QLD 4811, Australia

Chengwang Lei
School of Engineering, James Cook University, Townsville QLD 4811, Australia

ABSTRACT

Natural convection in a suddenly side-heated cavity with a square obstruction placed at the middle of the hot wall is visualized using a shadowgraph technique. The results show that the thermal boundary layer flow accumulates below the obstruction and forms a horizontal intrusion. Subsequently, the intrusion bypasses the obstruction, and reattaches to the downstream boundary. At the quasi-steady state, the thermal boundary layer forms a double-layer structure, which is split into two sections by the obstruction.

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