Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Duda Daniel"'
Numerical simulation of the flow topology over NREL’s S807 airfoil at different models of turbulence
Publikováno v:
EPJ Web of Conferences, Vol 299, p 01020 (2024)
Current numerical simulations investigate subsonic flow around the NREL’s S807 airfoil without an incident angle at Reynolds numbers near 2.8∙105. This work is devoted to the assessment application of various turbulence models for a numerical sim
Externí odkaz:
https://doaj.org/article/049e9cf66dad4cd9a8bbcda7c56d785f
Publikováno v:
EPJ Web of Conferences, Vol 299, p 01008 (2024)
The shear layer (SL) of a turbulent jet is studied by using Particle Image Velocimetry (PIV) up to distance 0.2 nozzle diameters in axial × radial plane. The jet is generated by circular nozzle at Reynolds numbers 1.1·105 to 1.1·106. This range co
Externí odkaz:
https://doaj.org/article/d87d0a28576b40be802a4ce62ea049b7
Publikováno v:
EPJ Web of Conferences, Vol 299, p 01039 (2024)
This work aimed to investigate the boundary layer topology over various densities of roughness. For experiments, we used three different surface conditions comprised of rectangular elements with uniform height arranged in staggered rows and covered t
Externí odkaz:
https://doaj.org/article/3974d38be5844c38828eb2d6fa2c98a1
Publikováno v:
MATEC Web of Conferences, Vol 383, p 00020 (2023)
The electricity industry plays an irreplaceable role in the rise of the economic potential and development of every country around the world. The international community of industry, research institutions and global businesses focuses more on green f
Externí odkaz:
https://doaj.org/article/0810e701670d4d9b8d43c2e3a21fbce3
Publikováno v:
MATEC Web of Conferences, Vol 383, p 00007 (2023)
The effect of leading edge erosion to the flow is studied experimentally by standard method of Particle Image Velocimetry. Three airfoil models are manufactured: the reference one, the homogenously eroded one, which is modeled by putting a sheet of s
Externí odkaz:
https://doaj.org/article/67c4827ab8d6487ca5b35ab618d2db6f
Publikováno v:
MATEC Web of Conferences, Vol 383, p 00024 (2023)
The primary goal of this investigation was to analyze the specific evolution of the boundary layer over an isolated roughness. A specific surface consisting of rectangular elements of the same height arranged in a checkerboard pattern was used for th
Externí odkaz:
https://doaj.org/article/8cf83d7a53ad4c3da3998239c7904d67
Publikováno v:
MATEC Web of Conferences, Vol 383, p 00022 (2023)
The canonical case of a circular cylinder in crossflow is studied experimentally at Reynolds number 5k. The power-spectra of all velocity components in the turbulent wake are studied in detail. Special attention is paid to the appearance of peaks and
Externí odkaz:
https://doaj.org/article/fa4a5ace08514fb9afdc90ba9781788b
Publikováno v:
EPJ Web of Conferences, Vol 269, p 01011 (2022)
Aluminum construction profiles become a standard construction material for short-term stands in science and in industry as well. It has the shape of square prism with an groove in each side to easy connecting the nut or bolt in any location. We studi
Externí odkaz:
https://doaj.org/article/6a467718de024e20951765c74ad02122
Publikováno v:
EPJ Web of Conferences, Vol 269, p 01010 (2022)
We studied the grid-generated turbulence by using Particle Image Velocimetry (PIV) technique. We test on this already well studied flow the new ways of analyzing spatially resolved PIV data, such as the spatial spectra and structure functions. We com
Externí odkaz:
https://doaj.org/article/7111abef9f9a468f85fbfb116c402547
Publikováno v:
MATEC Web of Conferences, Vol 369, p 02012 (2022)
This paper presents the results of the drag coefficient estimations for different types of NREL airfoils based on the experimental data. Namely, it was S803, S807, S813, and S817 profiles with the same chord length. The investigations were conducted
Externí odkaz:
https://doaj.org/article/38077deece784f318e9a250b98660f76