Numerical Investigation of Hydrogen-Fueled Combustion within Turbine Blade Passage.

貴志, 南雲; 和之, 戸田; 誠, 山本

doi:10.1299/kikaib.67.1672

Cited by 4 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nagumo et al [1] [2] proposed this new cycle concept and proved that this concept can be realizable. In addition, they performed 3-dimensional computations of the flow field with reactions within a first stator By the way, a tip leakage vortex is generated in a turbine rotor passage.…”

Section: Introductionmentioning

confidence: 98%

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

2008

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 98%

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

2008

Self Cite

View full text Add to dashboard Cite

show abstract

“…Considering these backgrounds, in our laboratory, an innovative jet engine with hydrogen-fueled combustion within a turbine vane passage was proposed by Nagumo et al [1][2][3]. Hydrogen gas is injected from the turbine vane surface, and the combustion is completed within the turbine vane passage.…”

Section: Introductionmentioning

confidence: 99%

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

Nakamura¹

2013

IJEPE

View full text Add to dashboard Cite

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.

show abstract

“…Such a design process can be very time consuming, and may result in a high design cost. Therefore, many researches are currently reported, aiming at the conversion of the design process based on trial and error into automatic one by applying an optimization algorithm to the turbomachinery blade design (Goto et al, 1999). Optimization design is defined as the problem to determine an optimal solution by means of forward analyses and perturbations with respect to design variables in the design space, which minimizes the objective function that represents desired requirements with satisfying a set of constraints.…”

Section: Introductionmentioning

confidence: 99%

Geometry Optimization of Turbine Blade with Fuel Injection

Nagumo

Toda²,

Yamamoto³

2002

The Proceedings of the JSME Annual Meeting

Self Cite

View full text Add to dashboard Cite

We have been investigating a new cycle concept for advanced propulsion system, in which hydrogen gas is directly injected from turbine blade surfaces and combusted within turbine blade passages. However, in the previous studies, we found that the aerodynamic performance of the blade is largely deteriorated due to the fuel injection. For the purpose of realizing our concept, turbine blade is required to have the adequate performance even with the hydrogen injection. In the present study, we develop a geometry optimization procedure for turbine blade with air injection. Our procedure is based on the gradient method, and composed of some elements, including CFD, geometry modification and automatic design point arrangement, in which design points are automatically clustered around the complicated surface. The validity of our approach is demonstrated by applying the geometry optimization to 2 types of turbine blades with different injection patterns.

show abstract

Numerical Investigation of Hydrogen-Fueled Combustion within Turbine Blade Passage.

Cited by 4 publications

References 4 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

Geometry Optimization of Turbine Blade with Fuel Injection

Contact Info

Product

Resources

About