Interaction, bursting and dynamic control of vortices of a cropped double-delta wing at high angle of attack
Alkhozam, Abdullah M.
MetadataShow full item record
A flow visualization study of the vortical flow over a cropped double-delta wing model with sharp leading edges and its three derivatives with small geometric modifications (fillets) at the strake wing junction was conducted in the Naval Postgraduate School water tunnel using the dye-injection technique. The fillets increased the wing area of the baseline model by 1%. The main focus of this study was to evaluate the effect of fillets on vortex core trajectories, interactions and breakdown on the leeward surface at high angle of attack (AOA) with zero sideslip angle. Comparison of test results for different fillet shapes indicates delay in both vortex interaction and breakdown at high AOA, particularly for the diamond fillet shapes. The vortex breakdown data implies lift augmentation for both static and dynamic case, with the static data correlating well with recently published numerical data.
Showing items related by title, author, creator and subject.
Bell, Walter J. (Monterey, California. Naval Postgraduate School, 1991-12);A model for thermionically assisted breakdown is proposed which predicts the voltage reduction experienced in low voltage discharges. This reduction in breakdown voltage has been beneficial to numerous engineering ...
Gikas, Zacharias Z. (1985-09);The objective of the present work was to experimentally investigate the effect of small sinusoidal perturbations on the breakdown of circular water jets issuing from long tubes aiming to examine how the mean velocity profile ...
Callahan, Michael O. (Monterey, California. Naval Postgraduate School, 1993-12);Electrical breakdown in high voltage diodes has been studied since the 1920s, yet it is still not well understood. This study characterizes the electron flow during breakdown in a high voltage vacuum diode. This was ...