Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Šimurda David"'
Publikováno v:
EPJ Web of Conferences, Vol 269, p 01066 (2022)
In aerodynamics as in other sciences, there are some phenomena which are widely explained in a way that under a closer look turns out to be based on wrong assumptions and thus not very convincing. One of these is the effect referred to as vapour cone
Externí odkaz:
https://doaj.org/article/3c98c389fbe94dfc8457be8dc9855161
Publikováno v:
EPJ Web of Conferences, Vol 264, p 01017 (2022)
With the increasing share of renewable power resources turbomachines need to be operated under a wider range of operating conditions including highly off-design regimes. Under such regimes an undesirable phenomenon of blade flutter might occur and po
Externí odkaz:
https://doaj.org/article/17dbe661d1ea4c468e9035841b1df0a6
Publikováno v:
EPJ Web of Conferences, Vol 264, p 01041 (2022)
Flow-induced vibration of turbine and compressor blades, so called blade flutter, represents a serious problem for designers and operators of large turbomachines. The research of mechanisms leading to this dangerous aeroelastic instability, which can
Externí odkaz:
https://doaj.org/article/ef06f782df144ff683129b4ace5caeac
Autor:
Lepicovsky Jan, Šimurda David
Publikováno v:
E3S Web of Conferences, Vol 345, p 01009 (2022)
The objective of this work is to demonstrate the feasibility and advantage of an alternative approach to aerodynamic data acquisition in high-speed highly-loaded turbine engine rotating components. Two methodologies of data acquisition using fast sen
Externí odkaz:
https://doaj.org/article/67a450d489944466bb08a1d50c041d98
Publikováno v:
E3S Web of Conferences, Vol 345, p 01011 (2022)
This study explores the possibilities of identifying position of a boundary layer transition using hot film measurements complemented by classical optical methods i.e. interferometry and schlieren method. The subject of the measurement is a NACA 0010
Externí odkaz:
https://doaj.org/article/459bf4476b3c479bbf1c54190f77abca
Publikováno v:
E3S Web of Conferences, Vol 345, p 00001 (2022)
Externí odkaz:
https://doaj.org/article/f25bc1c2eade4beb83f81355a6a1c060
Publikováno v:
MATEC Web of Conferences, Vol 345, p 00020 (2021)
Long term strategic changes in power generation approaches will require more flexibility for large power generating turbines as an unavoidable consequence of the increasing share of power generated by alternative energy sources. Demanded flexibility
Externí odkaz:
https://doaj.org/article/1e66a8aae9804174a54946bd8d67c377
Publikováno v:
MATEC Web of Conferences, Vol 345, p 00027 (2021)
Characteristics of a new compact valve design for steam turbines are analysed by measuring pressure losses and oscillations on the valve model. It is the model of an intercept valve of the intermediate-pressure turbine part. This valve is relatively
Externí odkaz:
https://doaj.org/article/81c1f5562766412c851623e8eeca9def
Publikováno v:
EPJ Web of Conferences, Vol 143, p 02107 (2017)
The paper reports on hot wire turbulence intensity measurements performed in the entry of a suction-type wind tunnel, used for investigation of flow-induced vibration of airfoils and slender structures. The airfoil is elastically supported with two d
Externí odkaz:
https://doaj.org/article/9d99fbb500304144b7a24b8388d899d8
Publikováno v:
EPJ Web of Conferences, Vol 67, p 02108 (2014)
The paper focuses on investigation of the unsteady subsonic airflow past an elastically supported airfoil for subcritical flow velocities and during the onset of the flutter instability. A physical model of the NACA0015 airfoil has been designed and
Externí odkaz:
https://doaj.org/article/0254fb4766734d25b0872fde4df763c6