Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Takayuki Matsunuma"'
Autor:
Takayuki Matsunuma, Takehiko Segawa
Publikováno v:
Actuators, Vol 12, Iss 12, p 467 (2023)
This study examined how various plasma actuator (PA) configurations affect the passage vortex (PV) reduction in a linear turbine cascade (LTC) utilizing dielectric barrier discharge PAs. The experiments were carried out under three specific layout co
Externí odkaz:
https://doaj.org/article/24beae4c5d0f430a8967a67e6ac91845
Autor:
Takayuki Matsunuma, Takehiko Segawa
Publikováno v:
Aerospace, Vol 10, Iss 7, p 641 (2023)
In an axial-flow turbine of a jet engine used for aircraft propulsion, the passage vortex (PV) and tip leakage vortex (TLV) generated inside the blade passage deteriorate the aerodynamic performance. In this study, a dielectric barrier discharge plas
Externí odkaz:
https://doaj.org/article/496307f2a4a048d09217c538123f69e9
Autor:
Takayuki Matsunuma
Publikováno v:
Actuators, Vol 11, Iss 8, p 210 (2022)
A dielectric barrier discharge plasma actuator was employed to reduce the passage vortex generated in a turbine cascade. This study focused on the burst mode drive of a plasma actuator and examined the relationship between flow field changes and the
Externí odkaz:
https://doaj.org/article/e16f47ba1c3541ffb64efa3998655311
Autor:
Takayuki Matsunuma
Publikováno v:
Actuators, Vol 11, Iss 5, p 129 (2022)
Because axial flow turbines are widely used as the main components of jet engines and industrial gas turbines, their energy reduction effect is significant, even with a slight performance improvement. These turbines operate over a wide range of Reyno
Externí odkaz:
https://doaj.org/article/09fea94b54d14e5ca23bd63ebbb6f3b8
Autor:
Takayuki MATSUNUMA, Takehiko SEGAWA
Publikováno v:
Journal of Fluid Science and Technology, Vol 14, Iss 2, Pp JFST0007-JFST0007 (2019)
Dielectric barrier discharge (DBD) plasma actuators were used for the active control of flow separation on a curved wall simulated suction surface of a gas turbine blade at three different mainstream velocities, UMS = 2.2 m/s, 4.1 m/s, and 6.3 m/s. O
Externí odkaz:
https://doaj.org/article/c8114fe3dcaa485ba67c7ea889a50664
Autor:
Takayuki Matsunuma, Takehiko Segawa
Publikováno v:
Energies, Vol 13, Iss 3, p 764 (2020)
Passage vortex exists as one of the typical secondary flows in turbomachines and generates a significant total pressure loss and degrades the aerodynamic performance. Herein, a dielectric barrier discharge (DBD) plasma actuator was utilized for an ac
Externí odkaz:
https://doaj.org/article/6ce5b94436614fe5bbd800e2cf3f0f44
Publikováno v:
International Journal of Aerospace Engineering, Vol 2016 (2016)
A feedback control system for mitigating flow separation was developed by using a string-type dielectric-barrier-discharge (DBD) plasma actuator and a fiber Bragg grating (FBG) sensor. Tangential jets were induced from the string-type DBD plasma actu
Externí odkaz:
https://doaj.org/article/b9be7470d48142db9cfe9323ad39ee26
Publikováno v:
International Journal of Rotating Machinery, Vol 2015 (2015)
Externí odkaz:
https://doaj.org/article/e8384c00949542eabbd85d14059e9555
Autor:
Takayuki Matsunuma, Yasukata Tsutsui
Publikováno v:
International Journal of Rotating Machinery, Vol 2005, Iss 1, Pp 1-15 (2005)
The unsteady flow field downstream of axial-flow turbine rotors at low Reynolds numbers was investigated experimentally using hot-wire probes. Reynolds number, based on rotor exit velocity and rotor chord length Reout,RT, was varied from 3.2×104 to
Externí odkaz:
https://doaj.org/article/efee30b504ca4be3928ff6ebff9fd3a7
Autor:
Takayuki Matsunuma, Takehiko Segawa
Publikováno v:
International Journal of Rotating Machinery, Vol 2012 (2012)
Active flow control using dielectric barrier discharge (DBD) plasma actuators was investigated to reattach the simulated boundary layer separation on the suction surface of a turbine blade at low Reynolds number, Re = 1.7 × 104. The flow separation
Externí odkaz:
https://doaj.org/article/00f33e306fb34f2a855e318e44cd0982