Results 31 to 40 of about 6,436,560 (338)
Energies, 2021 Stagnation is the transient state of a solar thermal system under high solar irradiation where the useful solar gain is zero. Both flat-plate collectors with selective absorber coatings and vacuum-tube collectors exhibit stagnation temperatures far above
Ralph Eismann +2 more
doaj +1 more source
Advances in Mechanical Engineering, 2022 Heat flow may be improved using a new form of nanofluid known as ternary hybrid nanofluid. Magnetic field, mass suction, and heat source effects on the stagnation area of ( Cu − F e 3 O 4 − Si O 2 / polymer ) ternary hybrid nanofluid toward convectively ...
Zafar Mahmood +5 more
semanticscholar +1 more source
Mathematical Problems in Engineering, 2022 The behavior of hybrid nanofluid and stagnation point flow toward a stretched surface along with melting heat transfer, second-order slip, electric field, and magnetic field effect is investigated in this study. Hybrid nanoparticles alumina A
M. Jawad +3 more
semanticscholar +1 more source
Mathematics, 2022 The behaviour of magnetic impact on the unsteady separated stagnation-point flow of hybrid nanofluid with the influence of viscous dissipation and Joule heating is investigated numerically in this study.
N. A. Zainal +3 more
semanticscholar +1 more source
Evaluation of the absorber temperature frequency function valid for evacuated flat plate collectors
Energy Reports, 2022 The degradation of performances for solar thermal collectors is linked to the decrease of the absorber efficiency caused by diffusion process, strongly dependent on temperature.
Eliana Gaudino +5 more
doaj
Deduction of temperature fluctuations in transient compression wind tunnels using incompressible turbulent flow data [PDF]
, 2009 Wind tunnels and other aero-thermal experimental facilities are likely to make a contribution to the optimisation of energy and propulsion systems for the foreseeable future.
Buttsworth, D. R., Widodo, A.
core +2 more sources
Experimental Study on Critical Flow of Supercritical CO2 at Steady State and Model Verification
Yuanzineng kexue jishu, 2022 When the loss of coolant accident happens in a reactor, because of the high temperature and high pressure in the reactor and the low external pressure, the critical flow may occur at the break due to sharp depressurization and vaporization.
LI Weiqing;ZHANG Dongxu;ZHAO Minfu
doaj
One-dimensional radiation-hydrodynamic scaling studies of imploding spherical plasma liners [PDF]
Physics of Plasmas 18, 072705 (2011), 2011 One-dimensional radiation-hydrodynamic simulations are performed to develop insight into the scaling of stagnation pressure with initial conditions of an imploding spherical plasma shell or "liner." Simulations reveal the evolution of high-Mach-number (M), annular, spherical plasma flows during convergence, stagnation, shock formation, and disassembly,
arxiv +1 more source
Physics of Plasmas, 2022 We present a new analysis methodology that allows for the self-consistent integration of multiple diagnostics including nuclear measurements, x-ray imaging, and x-ray power detectors to determine the primary stagnation parameters, such as temperature ...
P. Knapp +29 more
semanticscholar +1 more source
Drag Control by Hydrogen Injection in Shocked Stagnation Zone of Blunt Nose [PDF]
IOP Conf. Ser.: Mater. Sci. Eng. 1024 (2021) 012110, 2020 The main motivation of the current study is to propose a high-pressure hydrogen injection as an hybrid active flow control technique in order to manipulate the flow-field in front of a blunt nose during hypersonic flight. Hydrogen injection can lead to self-igition under the right environment conditions in a stagnation zone, and may cause thermal heat ...
arxiv +1 more source