This work investigates natural convection in an enclosure with localized heating on the bottom wall with a flushed or protruded heat source and cooled on the top and the side walls. Velocity field measurements are done by using 2D particle image velocimetry (PIV) technique. Proper orthogonal decomposition (POD) has been used to create low dimensional approximations of the system for predicting the flow structures. The POD-based analysis reveals the modal structure of the flow field and also allows reconstruction of velocity field at conditions other than those used in PIV study.

Issue Section:
Technical Brief
Keywords:
Experimental techniques, Heat and mass transfer, Natural convection , Thermal systems, Mixed convection
Topics:
Flow (Dynamics), Heat, Natural convection, Particulate matter, Principal component analysis

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