Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Ziemowit Malecha"'
Autor:
Ziemowit Malecha, Adam Sobczyk
Publikováno v:
Computers, Vol 13, Iss 7, p 167 (2024)
This study describes the use of artificial intelligence to predict the aerodynamic properties of wind turbine profiles. The goal was to determine the lift coefficient for an airfoil using its geometry as input. Calculations based on XFoil were taken
Externí odkaz:
https://doaj.org/article/12dbc0e5fd5c49edad8153a2bf226717
Publikováno v:
Energies, Vol 17, Iss 13, p 3093 (2024)
This paper explores an interesting approach to wind energy technology, focusing on a novel type of drag-driven vertical-axis wind turbines (VAWTs). Studied geometries employ rotor-shaped cross-sections, presenting a distinctive approach to harnessing
Externí odkaz:
https://doaj.org/article/7ac1f4612b0148d08f6871aca87c50fe
Autor:
Ziemowit Malecha, Gideon Dsouza
Publikováno v:
Computation, Vol 11, Iss 11, p 213 (2023)
This paper analyzes the interaction of wind turbines and losses in wind farms using computational fluid dynamics (CFD). The mathematical model used consisted of three-dimensional Reynolds-averaged Navier–Stokes (RANS) equations, while the presence
Externí odkaz:
https://doaj.org/article/1795efcf2e694465ac35258114c875aa
Publikováno v:
Energies, Vol 16, Iss 22, p 7590 (2023)
The purpose of this paper is to assess the influence of a novel type of vortex creation device called the leading-edge vortex controller (LEVCON) on the aerodynamic characteristics of a fighter jet. LEVCON has become a trending term in modern militar
Externí odkaz:
https://doaj.org/article/e97aeb08ec84466d86e7a9fb147600bb
Publikováno v:
Sensors, Vol 23, Iss 18, p 7985 (2023)
This article presents a prototype of a new, non-invasive, cuffless, self-calibrating blood pressure measuring device equipped with a pneumatic pressure sensor. The developed sensor has a double function: it measures the waveform of blood pressure and
Externí odkaz:
https://doaj.org/article/ad6590b797134ff1b76a01b4df720050
Autor:
Maciej Chorowski, Michał Lepszy, Krystian Machaj, Ziemowit Malecha, Dominika Porwisiak, Paweł Porwisiak, Zbigniew Rogala, Michał Stanclik
Publikováno v:
Energies, Vol 16, Iss 13, p 4898 (2023)
The main purpose of the article is to present a comprehensive and critical review of the challenges and risks associated with the use of green ammonia as an alternative fuel in land transport. The review is motivated by the clear trend toward phasing
Externí odkaz:
https://doaj.org/article/ab6375e68c2342089d5713123e737a1b
Publikováno v:
Energies, Vol 16, Iss 4, p 1911 (2023)
Natural gas is the primary source of energy, accounting for around 20% of the world’s energy production. It is also a key element in reducing CO2 emissions due to its key role in stabilizing renewable energy sources. At the same time, natural gas a
Externí odkaz:
https://doaj.org/article/ad86a69b81a7478bbc9468e06e259089
Autor:
Ziemowit Malecha
Publikováno v:
Energies, Vol 15, Iss 11, p 4071 (2022)
The year 2021 brought a significant increase in CO2 emissions despite the rapid growth of new renewable energy sources (RES) installations being commissioned [...]
Externí odkaz:
https://doaj.org/article/d0ba9e39fb6c49e592669285b54b9faa
Autor:
Ziemowit Malecha
Publikováno v:
Energies, Vol 15, Iss 3, p 1116 (2022)
This Special Issue of Energies features 11 scientific papers on the subject of turbulence and fluid mechanics [...]
Externí odkaz:
https://doaj.org/article/792a4685ef37431398cf1784b11273e1
Publikováno v:
Energies, Vol 15, Iss 3, p 854 (2022)
The article presents a numerical study of the large-amplitude, acoustically-driven streaming flow for different frequencies of the acoustic wave and different temperature gradients between hot and cold surfaces. The geometries studied were mainly two
Externí odkaz:
https://doaj.org/article/e13e52aa58704bf2a84736c20c6637ad