Global ETD Search
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Showing 1 to 5 of 5 for “"laminar separation bubbles"”.
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Investigation of transition to turbulence at low Reynolds numbers using Implicit Large Eddy Simulations with a Discontinuous Galerkin method
The present work predicts the formation of laminar separation bubbles at low Reynolds numbers and the related transition to turbulence. In addition to being one of the first Implicit Large Eddy Simulation studies using a high-order Discontinuous Galerkin method, unique attention is given to the …
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Numerical studies of the flow around an airfoil at low Reynolds number
… and linear stability analysis. The behaviour of laminar separation bubbles formed on a NACA-0012 airfoil at Rec = 5 £ 104 and incidence 5± is investigated. Initially volume forcing is introduced in order to promote transition to turbulence. After obtaining sufficient data from this forced case, …
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Bio-Inspired Axial Fan Design, 3D Printing Fabrication and Characterization for Noise and Flow Performance Optimization
… beamforming measurements, reveal the role of laminar separation bubbles and trip location in controlling boundary-layer development and acoustic scattering. Finally, the developed noise-control strategies are integrated at the system level, where their combined effects on rotor aerodynamic and …
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Experimental wind tunnel study of airfoils with large flap deflections at low Reynolds numbers
Lift, drag, and moment measurements were taken at low Reynolds numbers for four airfoils with trailing edge plain flaps in an attempt to understand the effects of Reynolds number, percent thickness (t/c), percent chord of flap (flap-chord ratio), and flap deflection on airfoil performance. The four …
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Aerodynamic and Acoustic Modeling for eVTOL Rotor Noise Prediction
… low-Reynolds-number flow physics, including laminar-turbulent transition and laminar separation bubble behavior.</p> <p>Predicted acoustic spectra were validated against experimental measurements obtained in the Virginia Tech Stability Wind Tunnel. Results demonstrate that turbulence model …