Results 21 to 30 of about 760,899 (302)

Performance Enforcement of a Parabolic Solar Collector with a Separating Transparent Glass Sheet [PDF]

open access: yesIranica Journal of Energy and Environment, 2022
This paper deals with the development of compound parabolic collectors (CPCs), utilizing a partial glass sheet adjacent to the absorber plate for the purpose of performance improvement.
S. A. Gandjalikhan Nassab
doaj   +1 more source

Transitional–turbulent spots and turbulent–turbulent spots in boundary layers [PDF]

open access: yesProceedings of the National Academy of Sciences, 2017
SignificanceUncovering the constitutive coherent structure in the inner layer of the canonical turbulent boundary layer has remained a central fluid mechanics theme, because it tests our intellectual ability to understand even the simplest external flow.
Xiaohua, Wu   +5 more
openaire   +2 more sources

A High-performance Double-pass Solar Air-water Heater [PDF]

open access: yesIranica Journal of Energy and Environment
In the present work, a double-pass solar air-water heater has been designed for the first time to provide both hot air and hot water for using in many engineering applications.
S. A. Gandjalikhan Nassab
doaj   +1 more source

Variation of turbulent burning rate of methane, methanol, and iso-octane air mixtures with equivalence ratio at elevated pressure [PDF]

open access: yes, 2005
Turbulent burning velocities for premixed methane, methanol, and iso-octane/air mixtures have been experimentally determined for an rms turbulent velocity of 2 m/s and pressure of 0.5 MPa for a wide range of equivalence ratios. Turbulent burning velocity
Abraham J.   +6 more
core   +1 more source

Sound Radiation of Aerodynamically Excited Flat Plates into Cavities

open access: yesApplied Sciences, 2017
Flow-induced vibrations and the sound radiation of flexible plate structures of different thickness mounted in a rigid plate are experimentally investigated.
Johannes Osterziel   +2 more
doaj   +1 more source

On the connection between turbulent motions and particle acceleration in galaxy clusters [PDF]

open access: yes, 2017
Giant radio halos are Mpc-scale diffuse radio sources associated with the central regions of galaxy clusters. The most promising scenario to explain the origin of these sources is that of turbulent re-acceleration, in which MeV electrons injected ...
Eckert, D.   +7 more
core   +3 more sources

Turbulence dynamics near a turbulent/non-turbulent interface [PDF]

open access: yesJournal of Fluid Mechanics, 2012
AbstractThe characteristics of the boundary layer separating a turbulence region from an irrotational (or non-turbulent) flow region are investigated using rapid distortion theory (RDT). The turbulence region is approximated as homogeneous and isotropic far away from the bounding turbulent/non-turbulent (T/NT) interface, which is assumed to remain ...
Teixeira, Miguel A. C., da Silva, C. B.
openaire   +2 more sources

Transition Probability to Turbulent Transport Regime [PDF]

open access: yes, 2002
Transition phenomena between thermal noise state and turbulent state observed in a submarginal turbulent plasma are analyzed with statistical theory.
Atsushi Furuya   +14 more
core   +3 more sources

Turbulent transport and dynamo in sheared MHD turbulence with a non-uniform magnetic field [PDF]

open access: yes, 2009
We investigate three-dimensional magnetohydrodynamics turbulence in the presence of velocity and magnetic shear (i.e., with both a large-scale shear flow and a nonuniform magnetic field).
Eun-jin Kim   +3 more
core   +3 more sources

Heat Transfer Enhancement of TiO2/Water Nanofluid at Laminar and Turbulent Flows: A Numerical Approach for Evaluating the Effect of Nanoparticle Loadings

open access: yesEnergies, 2018
Titania-based nanofluid flowing inside a circular tube under the boundary condition of a horizontal uniformly heated wall was investigated numerically for both laminar and turbulent flows.
Budi Kristiawan   +4 more
doaj   +1 more source

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