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Full-Text Articles in Engineering
Visual Observations Of An Air-Water Mixture Flowing Through A Tube Support Plate With Circular-Hole And Trefoil-Hole Designs, Gary W. Caille
Visual Observations Of An Air-Water Mixture Flowing Through A Tube Support Plate With Circular-Hole And Trefoil-Hole Designs, Gary W. Caille
Retrospective Theses and Dissertations
The flow patterns of an air-water mixture at atmospheric pressure were visually observed through a simulated vertical steam generator tube support plate of circular hole and trefoil designs. Flow oscillations with a period on the order of 0.4 seconds were observed in both support plates at similar mass flow rate combinations. The oscillation consisted of a period of rapid surging followed by a low flow or stagnation period on the order of 0.1 seconds. Reverse (downward) flow was also observed for part of the oscillation cycle in the trefoil support plate. The flow oscillations that exist in one tube support …
A Computational Model To Estimate The Thickness Of The Waterfilm Due To Rain On The Upper Surface Of An Airfoil, Padmanabha R. Chappidi
A Computational Model To Estimate The Thickness Of The Waterfilm Due To Rain On The Upper Surface Of An Airfoil, Padmanabha R. Chappidi
Retrospective Theses and Dissertations
Based on a two-phase boundary layer approach, a computational model is proposed to estimate the thickness of the waterfilm due to rain on the upper surface of an airfoil. The coupling between the air boundary layer and the water film is established by the conservation of mass and momentum at the interface. By a simple coordinate transformation, the interface is conformed to the finite difference grid system. Trajectory analysis of a raindrop of 1 mm diameter shows that the impingement of drops is high near the leading edge of the airfoil and decreases downstream. The finite difference equations of air/waterfilm …