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Robust 1-d fluid flow and heat transfer predictions in gas turbine cooling passages

Jalali, R ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.2514/6.2019-4057
  3. Publisher: American Institute of Aeronautics and Astronautics Inc, AIAA , 2019
  4. Abstract:
  5. This study describes a 1-D code, which determines the one-dimensional flow and heat transfer distributions in arbitrarily connected flow passages with multiple inlets and outlets. The procedure uses a component solver, which solves the one-dimensional compressible fluid flow and heat transfer equations inside an individual cooling passage. Also, it uses experimental correlations for the heat transfer coefficient and friction factor for each cooling passage. In addition to the component solver, there is a flow network solver subroutine, which applies the mass and energy conservation equations properly at each internal node. In order to validate this 1-D code, both the component and the flow network solvers are validated separately. The results of component solver are validated using the three-dimensional computational fluid dynamics (CFD) simulations. Additionally, the validation of the CFD simulation is done by comparing the results with available experimental data on C3X vane. The comparison shows that the maximum differences between the component solver solution and the CFD solution are less than 1.1% for pressure, temperature, and mass flow rate magnitudes. Since there are no available experimental results for the network of cooling passages, the numerical solutions is used to validate the network solver. A Typical network containing 8 components, 8 nodes, 3 inlets, and 2 outlets is used in this validation. The results show that the maximum differences between the current flow network solver and that of Meitner is less than 0.9% for the total temperature and pressure magnitudes. © 2019 by American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved
  6. Keywords:
  7. Codes (symbols) ; Cooling ; Flow of fluids ; Gas turbines ; Heat transfer coefficients ; One dimensional ; Propulsion ; Compressible fluid flow ; Experimental correlation ; Fluid flow and heat transfers ; Gas turbine cooling ; Mass and energy conservation ; Numerical solution ; Onedimensional flow ; Three dimensional computational fluid dynamics ; Computational fluid dynamics
  8. Source: AIAA Propulsion and Energy Forum and Exposition, 2019, 19 August 2019 through 22 August 2019 ; 2019 ; 9781624105906 (ISBN)
  9. URL: https://arc.aiaa.org/doi/10.2514/6.2019-4057