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Deposition of graphenic nanomaterials from elevated temperature premixed stagnation flames
Applications in Energy and Combustion Science, 2023 The work examines the unique nanostructure of carbon nanoparticles deposited from sooting premixed flames with flame temperatures exceeding 2200 K.
Shruthi Dasappa, Joaquin Camacho
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Stagnation temperature measurement using thin-film platinum resistance sensors [PDF]
Measurement Science and Technology, 2013 The measurement of stagnation temperature in high-speed flows is an important aspect of gas turbine engine testing. The ongoing requirement to improve the accuracy of such measurements has led to the development of probe systems that use a thin-film platinum resistance thermometer (PRT) as the sensing element. For certain aspects of engine testing this
C Bonham +3 more
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Thermal Structure of Turbulent Stagnating Opposed Jets with Different Temperature.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1997 Fluctuating temperature has been measured using a laser Rayleigh scattering technique along a centerline of turbulent stagnating opposed jets (cold jet velocity : 2m/s) with different temperatures up to about 400°C. The temperature signals show that the temperature fluctuation is characterized by spike type fluctuations with a sharp increase or ...
Toshihisa UEDA +3 more
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Stagnating surface tension below boiling temperature during laser illumination
IOP Conference Series: Materials Science and EngineeringAbstract Many laser processes include melting of material. Often, the material is overheated and reaches temperatures close or even above boiling temperature. However, many material properties at such high temperatures are often not known.
Joerg Volpp +2 more
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Correlation for Wall-Temperature Oscillations in Unsteady Stagnation Point Convective Heating
International Journal of Heat and Mass TransferThe purpose of this paper is to provide insight into how unsteady ow temperature aects the wall temperature of test articles exposed to convective heating. To this end, a simplied analytical correlation is derived that allows the determination of wall temperature uctuation amplitude in the case of an unsteady freestream.
Tobias Hermann
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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
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Aerospace, 2023 In this paper, aimed at the problem of large temperature gradient thermal testing with the typical sharp wedge leading edge structure of a hypersonic vehicle, a subsonic high-temperature combustion gas heating (SHCH) test device is used to conduct a ...
Ri Wang +5 more
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Heat transfer and ablation of carbon/carbon composites based on multi-field coupling
工程科学学报, 2020 With the development of hypersonic technology, the demand for thermal protection material is continuously increasing. Carbon/carbon composites are widely used as thermal protection materials in the nose and in the leading edge of hypersonic vehicles ...
Xue-wen SUN, Hai-bo YANG, Tao MI
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Assessment of the Impact of Stagnation Temperatures in Receiver Prototypes of C-PVT Collectors
Energies, 2019 Concentrating Photovoltaic Thermal (C-PVT) solar collectors produce both thermal and electric power from the same area while concentrating sunlight. This paper studies a C-PVT design where strings of series-connected solar cells are encapsulated with ...
João Gomes
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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
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