Computation of Rotor/Stator Interaction With Hydrogen-Fuelled Combustion

Sato, Masanori; Nagumo, Takashi; Toda, Kazuyuki; Yamamoto, Makoto

doi:10.1115/fedsm2003-45618

Cited by 3 publications

(3 citation statements)

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“…The total mass flow ratio of hydrogen to inflow air is a quarter of stoichiometric ratio. It was proved that this hydrogen injection rate has high realizability of this cycle concept by Sato et al [3].…”

Section: Injector Surface Conditionsmentioning

confidence: 97%

Numerical simulation of tip leakage vortex effect on hydrogen-combustion flow around 3D turbine blade

2008

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In these years, a lot of environmental problems such as air pollution and exhaustion of fossil fuels have been discussed intensively. In our laboratory, a hydrogen-fueled propulsion system has been researched as an alternative to conventional systems. A hydrogen-fueled propulsion system is expected to have higher power, lighter weight and lower emissions. However, for the practical use, there exist many problems that must be overcome. Considering these backgrounds, jet engines with hydrogen-fueled combustion within a turbine blade passage have been studied. Although some studies have been made on injecting and burning hydrogen fuel from a stator surface, little is known about the interaction between a tip leakage vortex near the suction side of a rotor tip and hydrogen-fueled combustion.The purpose of this study is to clarify the influence of the tip leakage vortex on the characteristics of the 3-dimensional flow field with hydrogen-fueled combustion within a turbine blade passage. Reynolds-averaged compressible Navier-Stokes equations are solved with incorporating a k-ε turbulence and a reduced chemical mechanism models. Using the computational results, the 3-dimensional turbulent flow field with chemical reactions is numerically visualized, and the three-dimensional turbulent flow fields with hydrogen combustion and the structure of the tip leakage vortex are investigated.

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Section: Injector Surface Conditionsmentioning

confidence: 97%

Numerical simulation of tip leakage vortex effect on hydrogen-combustion flow around 3D turbine blade

2008

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“…The amount of hydrogen injected into the flow passage is equal for each injector, and the total mass flow ratio of hydrogen to inflow air is a quarter of stoichiometric ratio. As described in Introduction, Sato et al [4] suggested that this hydrogen injection rate of 0.25 has the highest realizability of the hydrogen-fueled combustion turbine concept.…”

Section: Fig 3 Injection-hole Layoutmentioning

confidence: 99%

“…However, it was also indicated that the aerodynamic performance of the vane is largely degraded due to the hydrogen injection and its combustion near the vane surface. Then, Sato et al [4] performed three-dimensional computations for the rotor/stator interaction field with hydrogen combustion. They concluded that this concept has the highest possibility by employing the hydrogen injection rate of 2H 2 /O 2 =0.25.…”

Section: Introductionmentioning

confidence: 99%

Comparative Investigation of Lean Effect of Stator Vane in Hydrogen-Fueled Combustion Turbine

Nakamura¹

2013

IJEPE

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Abstract:In these years, a lot of environmental problems like air pollution and exhaustion of fossil fuels have been discussed intensively. In our laboratory, a hydrogen-fueled propulsion system has been researched as an alternative to conventional jet engine systems. A hydrogen-fueled propulsion system is expected to have higher power, lighter weight and lower emissions. However, for the practical use, there exist many problems that must be overcome. For example, there is little knowledge how the three-dimensional vane design affects on the flow characteristics and the aerodynamic performance of the hydrogen-fueled combustion turbine vane. The purpose of the present study is to clarify the influence of lean vanes, which is one of typical 3-dimensional design techniques, on the characteristics of the 3-dimensional flow field with hydrogen-fueled combustion within a turbine vane passage. The Reynolds-averaged compressible Navier-Stokes equations are solved with incorporating a k-ε turbulence and a reduced chemical mechanism models. Using the computational results for normal, compound lean and reverse compound lean vanes, the 3-dimensional turbulent flow fields with chemical reactions are visualized and investigated numerically. Through this study, it is confirmed that compound lean can suppress the excessively high temperature region on the endwall and reduce the total pressure loss.

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An Effect of Swept Vane in Hydrogen-Fueled Combustion Turbine

Honda

Suzuki

Yamamoto

2010

ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C

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A lot of environmental problems such as global warning, air pollution and exhaustion of fossil fuels have been discussed frequently. Many researches have been underway in several countries to develop a propulsion system for an advanced aircraft to achieve low environmental loading. On the other hand, with the recent development of an aircraft, the propulsion system is required to have lighter weight, higher power and lower emissions. To satisfy these requirements, we have supposed a new cycle concept for advanced propulsion system, in which the combustion camber is eliminated; hydrogen gas is directly injected from turbine vane surfaces and combusted within turbine vane passages. However, to apply the cycle to practical use, there are problems of extremely high surface temperature and aerodynamic performance decrease by hydrogen combustion. It is well known that three-dimensional design approaches such as sweep, lean and twist decrease the secondary flow loss. However, there is no knowledge how these three-dimensional designs affect on the flow characteristics of the hydrogen-fueled turbine. In the present study, we focus on sweep. To clarify the sweep effect on the surface temperature and performance of the hydrogen-combustion turbine, three-dimensional numerical simulations based on RANS are carried out. We find that the swept vanes with positive sweep give the aerodynamic performance. On the other hand, the swept vanes with negative sweep suppress the vane surface temperature.

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Computation of Rotor/Stator Interaction With Hydrogen-Fuelled Combustion

Cited by 3 publications

References 0 publications

Numerical simulation of tip leakage vortex effect on hydrogen-combustion flow around 3D turbine blade

Numerical simulation of tip leakage vortex effect on hydrogen-combustion flow around 3D turbine blade

Comparative Investigation of Lean Effect of Stator Vane in Hydrogen-Fueled Combustion Turbine

An Effect of Swept Vane in Hydrogen-Fueled Combustion Turbine

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