Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Boye Ahlborn"'
A simple analytic model is developed to describe the plasma parameters produced at peak compression when gas‐filled spherical shell targets are imploded by the ablation pressure produced by irradiation with constant laser power. The range of validi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cece15e659163bc5d374abd483b5bb3f
https://doi.org/10.1063/1.863769
https://doi.org/10.1063/1.863769
Publikováno v:
Canadian Journal of Zoology. 87:124-131
The optimum fineness ratio (X = L/d, where L and d are body length and profile height, respectively) for minimum drag is about 4.5 and many fast swimming fish are characterized by values of this order. However, values for large whales that undergo ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92063a7d3045b9cccaa81a81ba20e3fa
https://doi.org/10.1139/z08-144
https://doi.org/10.1139/z08-144
Publikováno v:
Fluid Dynamics Research. 30:379-399
A phenomenological model for the vortex-shedding process behind bluff cylindrical bodies is proposed. Relationships between Strouhal frequency St, drag coefficient cD, Reynolds number Re and geometric wake parameters are obtained from mass conservati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18d363b9ca90f05079baf1286da359f1
https://doi.org/10.1016/s0169-5983(02)00062-x
https://doi.org/10.1016/s0169-5983(02)00062-x
Autor:
Boye Ahlborn, Jeffrey M. Gordon
Publikováno v:
Journal of Applied Physics. 88:3645-3653
Vortex tubes are commonly used as refrigeration devices. We show that the thermal and fluid dynamics of the vortex tube bear the signature of a classic cooling cycle, and quantify its performance as a thermodynamic machine. In the process, we develop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ff25cd045731a0b9d66f27d2860165e
https://doi.org/10.1063/1.1289524
https://doi.org/10.1063/1.1289524
Publikováno v:
Physics Essays. 11:144-154
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14fde100ce7fa5ba23437405f9b35e33
https://doi.org/10.4006/1.3028753
https://doi.org/10.4006/1.3028753
Autor:
Stuart Groves, Boye Ahlborn
Publikováno v:
Fluid Dynamics Research. 21:73-86
A novel Pitot probe was used to measure the axial and azimuthal velocities in a vortex tube. The probe has only a single measuring port and is hence smaller than standard devices. It monitors stagnation and reference pressure sequentially as the prob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa53d675871c1ba59c4435409073509c
https://doi.org/10.1016/s0169-5983(97)00003-8
https://doi.org/10.1016/s0169-5983(97)00003-8
Publikováno v:
Journal of Physics D: Applied Physics. 29:1469-1472
The temperature separation effect, which is well known from standard vortex tubes that are driven by compressed air, has been observed in a device where air is sucked into the tube by applying vacuum at the hot and the cold exit ports. Rather than de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24972c22a7cc16b7b448adf3ebcaba63
https://doi.org/10.1088/0022-3727/29/6/009
https://doi.org/10.1088/0022-3727/29/6/009
Autor:
Boye Ahlborn, Marcel Lefrançois
Publikováno v:
Physics of Fluids. 6:2021-2031
The continuous formation and development of a laminar vortex street behind a circular cylinder of radius D in a flow of velocity U∞ has been modeled as a Huygens‐type wave process, where the transverse velocity Uy and the vorticity ω in the near
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a057ce13721378f1f74abb729365b5f5
https://doi.org/10.1063/1.868209
https://doi.org/10.1063/1.868209
Autor:
Robert W. Blake, Boye Ahlborn
Publikováno v:
Canadian Journal of Zoology. 79:1724-1726
Birds and mammals of body mass M that live in cold climates cannot have a body radius, Rmin, below about 2.5 cm. This criterion follows from the balance of metabolic heat production described by Kleiber's function, Γ = 3.6M0.73, and heat-conduction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f83b76cde8b4690ef8cc610c0cab762a
https://doi.org/10.1139/z01-117
https://doi.org/10.1139/z01-117
Publikováno v:
Fluid Dynamics Research. 9:107-117
The force field around a circular cylinder (D = 5.1 cm) towed at U = 0.15 m/s was explored by measuring the lift Fl and drag Fd of a small (cylindrical) probe inserted at various locations near the cylinder. By taking the Fourier transform of the lif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab7b274aa285121dda46e091dda090fd
https://doi.org/10.1016/0169-5983(92)90061-z
https://doi.org/10.1016/0169-5983(92)90061-z