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RISCoupled Aerothermodynamics Optimization for the Cooling System of a Turbine Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The cooling system design for aircooled turbines is a critical issue in modern gas turbine engineering. Advances in the computational fluid dynamics (CFD) technology and optimization methodology are providing new prospects ...
Film Cooling Modeling of Turbine Blades Using Algebraic Anisotropic Turbulence Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The complex structures in the flow field of gas turbine film cooling increase the anisotropy of turbulence making it difficult to accurately compute turbulent eddy viscosity and scalar diffusivity. An algebraic anisotropic ...
Experimental Investigation of Endwall Heat Transfer With Film and Impingement Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The switch from diffusive combustion to premixed combustion in a modern gas turbine changes the combustor exit temperature profile to a more uniform one. This will directly affect the cooling of the first stage vane ...
Enhancement of Film Cooling Effectiveness Using Dean Vortices
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Film cooling technology is widely used in gas turbines. With the additive manufacturing anticipated in the future, there will be more freedom in film cooling hole design. Exploiting this freedom, the present authors tried ...
Effect of Reynolds Number, Hole Patterns, and Target Plate Thickness on the Cooling Performance of an Impinging Jet Array—Part II: Conjugate Heat Transfer Results and Optimization
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study comprehensively illustrates the effect of Reynolds number, hole spacing, nozzle-to-target distance, and target plate thickness on the conjugate heat transfer (CHT) performance of an impinging jet array. Test ...
Unsteady Structure and Development of a Row of Impingement Jets, Including Kelvin–Helmholtz Vortex Development
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Considered is a cylinder channel with a single row of ten aligned impinging jets, with exit flow in the axial direction at one end of the channel. For the present predictions, an unsteady ReynoldsAveraged Navier–Stokes ...
Optimal Arrangement of Combined Hole for Improving Film Cooling Effectiveness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Film cooling technique is widely used to protect the components from being destroyed by hot mainstream in a modern gas turbine. Combining roundholes is a promising way of improving film cooling effectiveness. A DoE (design ...
Developing Oscillatory Flow in a Circular Pipe: A New Solution
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The problem of oscillatory flow in a circular pipe was analyzed by Atabek and associates more than two decades ago. Their formulas for velocity and pressure distributions in developing pipe ...
Algebraic Anisotropic Turbulence Modeling of Compound Angled Film Cooling Validated by Particle Image Velocimetry and Pressure Sensitive Paint Measurements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The complex structures in the film cooling flow field of gas turbines lead to the anisotropic property of the turbulent eddy viscosity and scalar diffusivity. An algebraic anisotropic turbulence model is developed aiming ...
Conjugate Heat Transfer Characteristics of a Highly Thermal Loaded Film Cooling System in Hot and Multicomposition Gas Condition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Radiation would be more important in turbine heat transfer due to higher temperature and multicomposition gas conditions in the future. The main goal of the current study is analyzing the characteristics of conjugate heat ...