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  • The scope of this article is focused on general analysis of errors and uncertainties possibly arising from CFD-to-schlieren pictures matching. Analysis is based on classic analytical equations. These are firstly evaluated with the presumption of constant density gradient along the ray course. In other words, the deflection of light-ray caused by density gradient is negligible in compare to the cross size of constant gradient area. It is the aim of this work to determine, whether this presumption is applicable in case of supersonic air-to-air ejector. The colour and black and white schlieren pictures are carried out and compared to CFD results. Simulations had covered various eddy viscosities. Computed pressure gradients are transformed into deflection angles and further to ray displacement. Resulting computed light-ray deflection is matched to experimental results.
  • The scope of this article is focused on general analysis of errors and uncertainties possibly arising from CFD-to-schlieren pictures matching. Analysis is based on classic analytical equations. These are firstly evaluated with the presumption of constant density gradient along the ray course. In other words, the deflection of light-ray caused by density gradient is negligible in compare to the cross size of constant gradient area. It is the aim of this work to determine, whether this presumption is applicable in case of supersonic air-to-air ejector. The colour and black and white schlieren pictures are carried out and compared to CFD results. Simulations had covered various eddy viscosities. Computed pressure gradients are transformed into deflection angles and further to ray displacement. Resulting computed light-ray deflection is matched to experimental results. (en)
Title
  • Error analysis of supersonic air-to-air ejector schlieren pictures
  • Error analysis of supersonic air-to-air ejector schlieren pictures (en)
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  • Error analysis of supersonic air-to-air ejector schlieren pictures
  • Error analysis of supersonic air-to-air ejector schlieren pictures (en)
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  • RIV/46747885:24210/13:#0005556!RIV14-GA0-24210___
http://linked.open...avai/predkladatel
http://linked.open...avai/riv/aktivita
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  • P(GAP101/10/1709), S
http://linked.open...vai/riv/dodaniDat
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  • 73193
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  • RIV/46747885:24210/13:#0005556
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  • error; supersonic ejector; schlieren pictures (en)
http://linked.open.../riv/klicoveSlovo
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  • [7802268EE6D3]
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  • Czech Republic
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  • FRANCIE
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  • EPJ Web of Conferences
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  • Kolář, Jan
http://linked.open...vavai/riv/typAkce
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  • 000319932200004
http://linked.open.../riv/zahajeniAkce
issn
  • 2100-014X
number of pages
http://bibframe.org/vocab/doi
  • 10.1051/epjconf/20134501004
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  • E D P SCIENCES
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  • 978-80-7372-912-7
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  • 24210
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