Proceedings of the Second International Conference on Emerging Trends in Engineering (ICETE 2023)

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Study of Entropy Generation in Secondary Flows in the T106A Low Pressure Axial Turbine Cascade

Authors
Vanamala Uma Maheshwar1, *, Apalla Aditya Shiva2
1Department of Mechanical Engineering, Osmania University, Hyderabad, 500007, India
2Mechademy Engineering Solutions Pvt. Ltd, New Delhi, 110048, India
*Corresponding author. Email: mahesh.v@uceou.edu
Corresponding Author
Vanamala Uma Maheshwar
Available Online 9 November 2023.
DOI
10.2991/978-94-6463-252-1_119How to use a DOI?
Keywords
Axial turbine cascade; secondary flows; entropy generation; turbulent kinetic energy
Abstract

The T106 axial turbine series is used extensively by major engine manufacturers, because of its ability to give the best performance at low pressure conditions. However, it has high secondary flow development. The present work aims at understanding the effect of high gas velocities and high temperatures on secondary flows in the T106A Low Pressure Turbine cascade for both smooth and rough blade surfaces. CFD analysis has been conducted using ANSYS CFX v19.1 using the k – ε model for turbulence and the total energy model for overall analysis, for five velocities and a fixed high temperature which was imposed using the total temperature equation. It was observed that there was no variation in the overall pressure profile for smooth and rough blade surfaces, and there was a large positive pressure coefficient. However, there was a high rate of entropy generation and turbulent kinetic energy production rate, accompanied by high heat transfer coefficients in the case of rough blade surface. For the case of the rough blade, as compared to the smoother blade, the boundary layer separation increased further affront towards the leading edge with increase in gas velocity and surface roughness along with increasing Turbulent Kinetic Energy (TKE) in both the cases.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the Second International Conference on Emerging Trends in Engineering (ICETE 2023)
Series
Advances in Engineering Research
Publication Date
9 November 2023
ISBN
978-94-6463-252-1
ISSN
2352-5401
DOI
10.2991/978-94-6463-252-1_119How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Vanamala Uma Maheshwar
AU  - Apalla Aditya Shiva
PY  - 2023
DA  - 2023/11/09
TI  - Study of Entropy Generation in Secondary Flows in the T106A Low Pressure Axial Turbine Cascade
BT  - Proceedings of the Second International Conference on Emerging Trends in Engineering (ICETE 2023)
PB  - Atlantis Press
SP  - 1189
EP  - 1196
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-252-1_119
DO  - 10.2991/978-94-6463-252-1_119
ID  - Maheshwar2023
ER  -