CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel

Yassen El-Sayed Yassen; Ahmed Sharaf Abdelhamed

doi:doi:10.11648/j.ajae.s.2015020101.14

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CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel

Yassen El-Sayed Yassen, Ahmed Sharaf Abdelhamed

Published in American Journal of Aerospace Engineering (Volume 2, Issue 1-1)

Received: 26 September 2014 Accepted: 27 September 2014 Published: 16 October 2014

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Abstract

The aim of this paper is to provide a contribution to algorithms for the numerical simulation of the atmospheric boundary layer (ABL) in short test section wind tunnel, with the lowest pressure loss possible, for large Re, similar to the high values observed in nature. Different turbulent models have been examined for their relative suitability for the atmospheric boundary layer airflow with and without the implementation of buoyancy effects with modified turbulence model constants for the atmosphere. Validation of turbulent models through comparison with wind tunnel experiments is essential for practical applications. It has been observed that the k-ε model is most suitable tool for generation of an ABL in short-chamber wind tunnel. A comparison has been made with the available experimental data, from literature, and the predicted CFD values are very close to the corresponding experimental measurements. The simulation results show the importance of turbulence model constant (Cµ), the non-uniform velocity and turbulence intensity profiles. Also, the significance of y+ for consistent assessment is confirmed. However, it has been found that the buoyancy force makes significant change in boundary layer thickness without a major impact on computation time.

Published in	American Journal of Aerospace Engineering (Volume 2, Issue 1-1) This article belongs to the Special Issue Hands-on Learning Technique for Multidisciplinary Engineering Education
DOI	10.11648/j.ajae.s.2015020101.14
Page(s)	38-46
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Atmospheric Boundary Layer (ABL), Buoyancy Effect, Turbulence Models, Short Test Section Wind Tunnel, Numerical Simulation, Non-Uniform Velocity

References

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APA Style

Yassen El-Sayed Yassen, Ahmed Sharaf Abdelhamed. (2014). CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel. American Journal of Aerospace Engineering, 2(1-1), 38-46. https://doi.org/10.11648/j.ajae.s.2015020101.14

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ACS Style

Yassen El-Sayed Yassen; Ahmed Sharaf Abdelhamed. CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel. Am. J. Aerosp. Eng. 2014, 2(1-1), 38-46. doi: 10.11648/j.ajae.s.2015020101.14

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AMA Style

Yassen El-Sayed Yassen, Ahmed Sharaf Abdelhamed. CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel. Am J Aerosp Eng. 2014;2(1-1):38-46. doi: 10.11648/j.ajae.s.2015020101.14

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@article{10.11648/j.ajae.s.2015020101.14,
  author = {Yassen El-Sayed Yassen and Ahmed Sharaf Abdelhamed},
  title = {CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel},
  journal = {American Journal of Aerospace Engineering},
  volume = {2},
  number = {1-1},
  pages = {38-46},
  doi = {10.11648/j.ajae.s.2015020101.14},
  url = {https://doi.org/10.11648/j.ajae.s.2015020101.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajae.s.2015020101.14},
  abstract = {The aim of this paper is to provide a contribution to algorithms for the numerical simulation of the atmospheric boundary layer (ABL) in short test section wind tunnel, with the lowest pressure loss possible, for large Re, similar to the high values observed in nature. Different turbulent models have been examined for their relative suitability for the atmospheric boundary layer airflow with and without the implementation of buoyancy effects with modified turbulence model constants for the atmosphere. Validation of turbulent models through comparison with wind tunnel experiments is essential for practical applications. It has been observed that the k-ε model is most suitable tool for generation of an ABL in short-chamber wind tunnel. A comparison has been made with the available experimental data, from literature, and the predicted CFD values are very close to the corresponding experimental measurements. The simulation results show the importance of turbulence model constant (Cµ), the non-uniform velocity and turbulence intensity profiles. Also, the significance of y+ for consistent assessment is confirmed. However, it has been found that the buoyancy force makes significant change in boundary layer thickness without a major impact on computation time.},
 year = {2014}
}

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TY  - JOUR
T1  - CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel
AU  - Yassen El-Sayed Yassen
AU  - Ahmed Sharaf Abdelhamed
Y1  - 2014/10/16
PY  - 2014
N1  - https://doi.org/10.11648/j.ajae.s.2015020101.14
DO  - 10.11648/j.ajae.s.2015020101.14
T2  - American Journal of Aerospace Engineering
JF  - American Journal of Aerospace Engineering
JO  - American Journal of Aerospace Engineering
SP  - 38
EP  - 46
PB  - Science Publishing Group
SN  - 2376-4821
UR  - https://doi.org/10.11648/j.ajae.s.2015020101.14
AB  - The aim of this paper is to provide a contribution to algorithms for the numerical simulation of the atmospheric boundary layer (ABL) in short test section wind tunnel, with the lowest pressure loss possible, for large Re, similar to the high values observed in nature. Different turbulent models have been examined for their relative suitability for the atmospheric boundary layer airflow with and without the implementation of buoyancy effects with modified turbulence model constants for the atmosphere. Validation of turbulent models through comparison with wind tunnel experiments is essential for practical applications. It has been observed that the k-ε model is most suitable tool for generation of an ABL in short-chamber wind tunnel. A comparison has been made with the available experimental data, from literature, and the predicted CFD values are very close to the corresponding experimental measurements. The simulation results show the importance of turbulence model constant (Cµ), the non-uniform velocity and turbulence intensity profiles. Also, the significance of y+ for consistent assessment is confirmed. However, it has been found that the buoyancy force makes significant change in boundary layer thickness without a major impact on computation time.
VL  - 2
IS  - 1-1
ER  -

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Author Information

Yassen El-Sayed Yassen

Mechanical Power Engineering , Faculty of Engineering, Port Said University, Port Said, Egypt
Ahmed Sharaf Abdelhamed

Mechanical Power Engineering , Faculty of Engineering, Port Said University, Port Said, Egypt

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APA Style

Yassen El-Sayed Yassen, Ahmed Sharaf Abdelhamed. (2014). CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel. American Journal of Aerospace Engineering, 2(1-1), 38-46. https://doi.org/10.11648/j.ajae.s.2015020101.14

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ACS Style

Yassen El-Sayed Yassen; Ahmed Sharaf Abdelhamed. CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel. Am. J. Aerosp. Eng. 2014, 2(1-1), 38-46. doi: 10.11648/j.ajae.s.2015020101.14

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AMA Style

Yassen El-Sayed Yassen, Ahmed Sharaf Abdelhamed. CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel. Am J Aerosp Eng. 2014;2(1-1):38-46. doi: 10.11648/j.ajae.s.2015020101.14

Copy | Download

@article{10.11648/j.ajae.s.2015020101.14,
  author = {Yassen El-Sayed Yassen and Ahmed Sharaf Abdelhamed},
  title = {CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel},
  journal = {American Journal of Aerospace Engineering},
  volume = {2},
  number = {1-1},
  pages = {38-46},
  doi = {10.11648/j.ajae.s.2015020101.14},
  url = {https://doi.org/10.11648/j.ajae.s.2015020101.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajae.s.2015020101.14},
  abstract = {The aim of this paper is to provide a contribution to algorithms for the numerical simulation of the atmospheric boundary layer (ABL) in short test section wind tunnel, with the lowest pressure loss possible, for large Re, similar to the high values observed in nature. Different turbulent models have been examined for their relative suitability for the atmospheric boundary layer airflow with and without the implementation of buoyancy effects with modified turbulence model constants for the atmosphere. Validation of turbulent models through comparison with wind tunnel experiments is essential for practical applications. It has been observed that the k-ε model is most suitable tool for generation of an ABL in short-chamber wind tunnel. A comparison has been made with the available experimental data, from literature, and the predicted CFD values are very close to the corresponding experimental measurements. The simulation results show the importance of turbulence model constant (Cµ), the non-uniform velocity and turbulence intensity profiles. Also, the significance of y+ for consistent assessment is confirmed. However, it has been found that the buoyancy force makes significant change in boundary layer thickness without a major impact on computation time.},
 year = {2014}
}

Copy | Download

TY  - JOUR
T1  - CFD Modeling of the Atmospheric Boundary Layer in Short Test Section Wind Tunnel
AU  - Yassen El-Sayed Yassen
AU  - Ahmed Sharaf Abdelhamed
Y1  - 2014/10/16
PY  - 2014
N1  - https://doi.org/10.11648/j.ajae.s.2015020101.14
DO  - 10.11648/j.ajae.s.2015020101.14
T2  - American Journal of Aerospace Engineering
JF  - American Journal of Aerospace Engineering
JO  - American Journal of Aerospace Engineering
SP  - 38
EP  - 46
PB  - Science Publishing Group
SN  - 2376-4821
UR  - https://doi.org/10.11648/j.ajae.s.2015020101.14
AB  - The aim of this paper is to provide a contribution to algorithms for the numerical simulation of the atmospheric boundary layer (ABL) in short test section wind tunnel, with the lowest pressure loss possible, for large Re, similar to the high values observed in nature. Different turbulent models have been examined for their relative suitability for the atmospheric boundary layer airflow with and without the implementation of buoyancy effects with modified turbulence model constants for the atmosphere. Validation of turbulent models through comparison with wind tunnel experiments is essential for practical applications. It has been observed that the k-ε model is most suitable tool for generation of an ABL in short-chamber wind tunnel. A comparison has been made with the available experimental data, from literature, and the predicted CFD values are very close to the corresponding experimental measurements. The simulation results show the importance of turbulence model constant (Cµ), the non-uniform velocity and turbulence intensity profiles. Also, the significance of y+ for consistent assessment is confirmed. However, it has been found that the buoyancy force makes significant change in boundary layer thickness without a major impact on computation time.
VL  - 2
IS  - 1-1
ER  -

Copy | Download