PreprintArticleVersion 1Preserved in Portico This version is not peer-reviewed
Numerical Investigation of the Effect of Free Flow Turbulence Intensity and Reynolds Number on the Heat Transfer Rate of Gas Turbine Blade with Internal Cooler
Version 1
: Received: 29 September 2023 / Approved: 30 September 2023 / Online: 30 September 2023 (10:25:27 CEST)
How to cite:
Dehghaniyan, S. Numerical Investigation of the Effect of Free Flow Turbulence Intensity and Reynolds Number on the Heat Transfer Rate of Gas Turbine Blade with Internal Cooler. Preprints2023, 2023092162. https://doi.org/10.20944/preprints202309.2162.v1
Dehghaniyan, S. Numerical Investigation of the Effect of Free Flow Turbulence Intensity and Reynolds Number on the Heat Transfer Rate of Gas Turbine Blade with Internal Cooler. Preprints 2023, 2023092162. https://doi.org/10.20944/preprints202309.2162.v1
Dehghaniyan, S. Numerical Investigation of the Effect of Free Flow Turbulence Intensity and Reynolds Number on the Heat Transfer Rate of Gas Turbine Blade with Internal Cooler. Preprints2023, 2023092162. https://doi.org/10.20944/preprints202309.2162.v1
APA Style
Dehghaniyan, S. (2023). Numerical Investigation of the Effect of Free Flow Turbulence Intensity and Reynolds Number on the Heat Transfer Rate of Gas Turbine Blade with Internal Cooler. Preprints. https://doi.org/10.20944/preprints202309.2162.v1
Chicago/Turabian Style
Dehghaniyan, S. 2023 "Numerical Investigation of the Effect of Free Flow Turbulence Intensity and Reynolds Number on the Heat Transfer Rate of Gas Turbine Blade with Internal Cooler" Preprints. https://doi.org/10.20944/preprints202309.2162.v1
Abstract
The amount of heat transfer in gas turbine blades depends on cooling techniques and various flow phenomena. The effect of eddies, passing shock waves and free flow turbulence has been noticed by many researchers since the beginning. The focus of the upcoming work is on the numerical investigation of the effects of turbulence intensity and Reynolds number on the amount of heat transfer from the blade surface with internal cooling. The SST model has been used to solve this problem, which has been compared with the experimental work to ensure the correctness of the numerical simulation. In this regard, by changing the free flow turbulence intensity with values of 1, 5, 7, and 10% and at three Reynolds numbers of 150,000, 350,000, and 750,000, the changes in heat transfer coefficients have been investigated. The results show that with the increase of the turbulence intensity at different Reynolds numbers, due to the positive effect of the flow turbulence on the suppression of separation and promotion of the boundary layer transition, the blade surface heat transferincreases and this increase is more evident at higher Reynolds numbers.
Keywords
heat transfer; gas turbine; turbulence intensity; Reynolds number; boundary layer
Subject
Engineering, Aerospace Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
