Next Article in Journal
Exploring the Influence of Social Media Usage for Academic Purposes Using a Partial Least Squares Approach
Previous Article in Journal
Hybrid Feedback Control for Exponential Stability and Robust H Control of a Class of Uncertain Neural Network with Mixed Interval and Distributed Time-Varying Delays
Article

Numerical Investigation of a Radially Cooled Turbine Guide Vane Using Air and Steam as a Cooling Medium

Department of Mechanical and Marine Engineering, Western Norway University of Applied Sciences (HVL), Inndalsveien 28, 5063 Bergen, Norway
*
Author to whom correspondence should be addressed.
Academic Editor: Demos T. Tsahalis
Received: 25 April 2021 / Revised: 26 May 2021 / Accepted: 27 May 2021 / Published: 28 May 2021
(This article belongs to the Section Computational Engineering)
Gas turbine performance is closely linked to the turbine inlet temperature, which is limited by the turbine guide vanes ability to withstand the massive thermal loads. Thus, steam cooling has been introduced as an advanced cooling technology to improve the efficiency of modern high-temperature gas turbines. This study compares the cooling performance of compressed air and steam in the renowned radially cooled NASA C3X turbine guide vane, using a numerical model. The conjugate heat transfer (CHT) model is based on the RANS-method, where the shear stress transport (SST) kω model is selected to predict the effects of turbulence. The numerical model is validated against experimental pressure and temperature distributions at the external surface of the vane. The results are in good agreement with the experimental data, with an average error of 1.39% and 3.78%, respectively. By comparing the two coolants, steam is confirmed as the superior cooling medium. The disparity between the coolants increases along the axial direction of the vane, and the total volume average temperature difference is 30 K. Further investigations are recommended to deal with the local hot-spots located near the leading- and trailing edge of the vane. View Full-Text
Keywords: CFD; conjugate heat transfer; gas turbines; numerical modelling CFD; conjugate heat transfer; gas turbines; numerical modelling
Show Figures

Figure 1

MDPI and ACS Style

Norheim, S.; Amzin, S. Numerical Investigation of a Radially Cooled Turbine Guide Vane Using Air and Steam as a Cooling Medium. Computation 2021, 9, 63. https://0-doi-org.brum.beds.ac.uk/10.3390/computation9060063

AMA Style

Norheim S, Amzin S. Numerical Investigation of a Radially Cooled Turbine Guide Vane Using Air and Steam as a Cooling Medium. Computation. 2021; 9(6):63. https://0-doi-org.brum.beds.ac.uk/10.3390/computation9060063

Chicago/Turabian Style

Norheim, Sondre, and Shokri Amzin. 2021. "Numerical Investigation of a Radially Cooled Turbine Guide Vane Using Air and Steam as a Cooling Medium" Computation 9, no. 6: 63. https://0-doi-org.brum.beds.ac.uk/10.3390/computation9060063

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop