Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Ali M. Hamed"'
Publikováno v:
Energies, Vol 8, Iss 10, Pp 11955-11972 (2015)
Wind tunnel experiments were performed to investigate the effects of downstream-facing winglets on the wake dynamics, power and thrust of a model wind turbine. Two similar turbines with and without winglets were operated under the same conditions. Re
Externí odkaz:
https://doaj.org/article/ba309507c8dd41bda3b0c8cc886d0153
Autor:
Ali M. Hamed, Christopher T. O'Brien, Adam J. Hall, Ryan M. Gallary, Joshua J. DaRosa, Quinlan L. Goddard, Bailey R. McAtee
Publikováno v:
Physical Review Fluids. 8
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::753847b495e8804173e296ae5df4f9a7
https://doi.org/10.1103/physrevfluids.8.024602
https://doi.org/10.1103/physrevfluids.8.024602
Autor:
Ali M. Hamed, Adam M. Peterlein
Publikováno v:
Journal of Turbulence. 21:17-33
The modification to the turbulence structure of a boundary layer perturbed by an isolated cylindrical roughness element and by two tandem cylindrical roughness elements was experimentally investiga...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d87525bb42d6c09f3ae6840092c6e09
https://doi.org/10.1080/14685248.2019.1710518
https://doi.org/10.1080/14685248.2019.1710518
Publikováno v:
Experiments in Fluids. 62
Planar particle image velocimetry was utilized to investigate the effects of localized blowing (injection) on the turbulent boundary layer over two-dimensional k-type roughness. The experiments were performed at a Reynolds number of 100,000, based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea5082a5b23d833e987b24ef6b21880b
https://doi.org/10.1007/s00348-021-03261-0
https://doi.org/10.1007/s00348-021-03261-0
Autor:
Suranga Dharmarathne, Leonardo P. Chamorro, Ali M. Hamed, Murat Tutkun, Burak Aksak, Luciano Castillo, Ali Doosttalab, Humberto Bocanegra Evans
Publikováno v:
Journal of Turbulence. 20:563-576
Adverse-pressure-gradient turbulent boundary layer flow was inspected at Reynolds number based on momentum thickness, Reθ≈1200, using particle image velocimetry in a refractive-index-matching flume...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc47b075eb029d451d86d549659aa752
https://doi.org/10.1080/14685248.2019.1683186
https://doi.org/10.1080/14685248.2019.1683186
Publikováno v:
Physical Review Fluids. 5
The turbulent flow within short canopy gaps with lengths $L/h$ = 0.5, 1, 2, 3, and 4, where $h$ denotes the canopy height, is experimentally investigated using planar particle image velocimetry. A thorough examination of the time-averaged streamwise
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f747a637cebf945e659252781f270749
https://doi.org/10.1103/physrevfluids.5.123801
https://doi.org/10.1103/physrevfluids.5.123801
Autor:
Serdar Gorumlu, Luciano Castillo, Humberto Bocanegra Evans, Ali M. Hamed, Leonardo P. Chamorro, Burak Aksak, Ali Doosttalab
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America
Significance Flow separation on moving bodies has a negative effect on energy efficiency. Reducing recirculating regions is key in the design of energy-efficient systems. Efficient design decreases fuel consumption and pollutant emissions, including
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a7c1d763accbdbbcb145d749345f9bf
https://doi.org/10.1073/pnas.1715567115
https://doi.org/10.1073/pnas.1715567115
Publikováno v:
Journal of Turbulence. 19:61-71
The signatures of the Kelvin–Helmoltz (K–H) and von Karman (VK) vortices shed from a semicircular cylinder with flaps of length L/d = 0, 1/3, 1, 2, and 3 were investigated using hotwire anemometry. Here, L and d denote the flap length and diamete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5d18e7173233eb35b853924c276d13c
https://doi.org/10.1080/14685248.2017.1391390
https://doi.org/10.1080/14685248.2017.1391390
Publikováno v:
Journal of Fluids and Structures. 70:417-427
Wind tunnel experiments were performed to study the impact of coherent vortical structures, shed from a cylinder, on the oscillations and rotations of vertical flat plates with thickness ratio b / c = 1 / 16 , 3/16 and 5/16. Various combinations of c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fe5fe6e6470259a9c3579c1cee32044
https://doi.org/10.1016/j.jfluidstructs.2017.02.011
https://doi.org/10.1016/j.jfluidstructs.2017.02.011
Publikováno v:
Prof. Nepf via Elizabeth Soergel
The flow development above and within homogeneous and heterogeneous canopies was experimentally studied using particle image velocimetry in a refractive-indexmatching channel. The experiments were designed to gain insight into the effect of height he
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ccf2a14ec06571ee09ea404cbf4895e
https://doi.org/10.1017/jfm.2017.22
https://doi.org/10.1017/jfm.2017.22