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

| Peer-Reviewed

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

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

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), 2024. 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

[1]	Jensen, M. and Franck, N., “Model Scale Tests in Turbulent Wind”, Part I, Danish Technical Press, Copenhagen, 1963.
[2]	Jensen, M. and Franck, N., “Model Scale Tests in Turbulent Wind”, Part II, Danish Technical Press, Copenhagen, 1965.
[3]	Blessmann, J., “Simulation of the Natural Wind Structure in an Aerodynamic Wind Tunnel” (in Portuguese), Ph.D. thesis, Instituto Tecnológico de Aeronáutica (ITA), S.P., Brazil, 169 p, 1973.
[4]	Pires, L.B., Paula, I.B., Fisch, G., Gielow, R., and Girardi, R.,M., "Simulations of the Atmospheric Boundary Layer in a Wind Tunnel with Short Test Section" , J. Aerosp. Technol. Manag., Vol. 5, No. 3, pp. 305-314, 2013.
[5]	Novak, M.D., Warland, J.S., Orchansky, A.L., Ketler, R. and Green, S., “Wind Tunnel and Field Measurements of Turbulent Flow in Forests. Part I: Uniformly Thinned Stands”, Boundary Layer Meteorology, Vol. 95, pp. 457-495, 2000.
[6]	Kwon, K.J., Lee, J.Y. and Sung, B., “PIV Measurements on the Boundary Layer Flow around Naro Space Center”, Proceedings of the 5th International Symposium on Particle Image Velocimetry, pp. 22-24, 2003.
[7]	Cao, S. and Tamura, T., “Experimental Study on Roughness Effects on Turbulent Boundary Layer Flow over a Two-Dimensional Steep Hill”, Journal of Wind Engineering and Industrial Aerodynamics, Vol. 94, pp. 1-19, 2006.
[8]	Kozmar, H., “Scale Effects in Wind Tunnel Modeling of an Urban Atmospheric Boundary Layer”, Theoretical and Applied Climatology, Vol. 100, pp.153-162, 2009.
[9]	Avelar, A.C., Brasileiro, F., Marto, A.G., Marciotto, E. and Fisch, G., “Wind Tunnel Simulation of the Atmospheric Boundary Layer for Study of the Wind Pattern at the Alcantara Space Center”, J. Aerosp. Technol. Manag., Vol. 4, No. 4, 2012.
[10]	Gorlé C., Van Beeck J., Rambaud P., and Van Tendeloo G., "CFD modelling of small particle dispersion: The influence of the turbulence kinetic energy in the atmospheric boundary layer", Elsevier Ltd., Atmospheric Environment 43, pp. 673–681, 2009.
[11]	Leitl, B., Kastner-Klein, P., Rau, M., and Meroney, R.N., "Concentration and flow distributions in the vincinity of u-shaped buildings: wind-tunnel and computational data", J. of Wind Eng. and Ind. Aerody. 67–68, 745–755, 1997.
[12]	Chang, C., and Meroney, R., "Concentration and flow distributions in urban street canyons: wind tunnel and computational data", J. of Wind Eng. and Ind. Aerody., 91, 1141–1154, 2003.
[13]	Yang, W., Jin, X., Jin, H., Gu, M., and Chen, S., "Application of new inflow boundary conditions for modeling equilibrium atmosphere boundary layer in rans-based turbulence models", In: Proceedings of International Conference on Wind Engineering 2007.
[14]	Garcia Sagrado, A., van Beeck, J., Rambaud, P., and Olivari, D., "Numerical and experimental modelling of pollutant dispersion in a street canyon", J. of Wind Eng. and Industrial Aerodynamics 90, 321–339, 2002.
[15]	Dixon, N., Boddy, J., Smalley, R., and Tomlin, A.S., "Evaluation of a turbulent flow and dispersion model in a typical street canyon in York", UK. Atmospheric Environment 40, 958–972, 2006.
[16]	Pieterse J., E., "CFD Investigation of the Atmospheric Boundary Layer under Different Thermal Stability Conditions", Thesis, MSc., Stellenbosch University, 2013.
[17]	Alinot, C. & Masson, C., "Aerodynamic Simulations of Wind Turbines Operating in Atmospheric Boundary Layer With Various Thermal Stratifications", ASME Conference Proceedings, vol. 2002, no. 7476X, pp. 206-215, 2002.
[18]	Blocken, B., Carmeliet, J. and Stathopoulos, T., "CFD Evaluation of Wind Speed Conditions in Passages Between Parallel Buildings- Effect of Wall-Function Roughness Modifications for the Atmospheric Boundary Layer Flow", Journal of Wind Engineering and Industrial Aerodynamics, vol. 95, no. 9–11, pp. 941-962, 2007a.
[19]	Blocken, B., Stathopoulos, T. and Carmeliet, J., "CFD Simulation of the Atmospheric Boundary Layer: Wall Function Problems", Atmospheric Environment, vol. 41, no. 2, pp. 238-252, 2007b.
[20]	Hargreaves, D. & Wright, N., "On the Use of the k–ε Model in Commercial CFD Software to Model the Neutral Atmospheric Boundary Layer", Journal of Wind Engineering and Industrial Aerodynamics, vol. 95, no. 5, pp. 355-369, 2007.
[21]	Fang, P., Gu M., Tan, J., Zhao, B. and Shao, D., "Modeling the Neutral Atmospheric Boundary Layer Based on the Standard k -ε Turbulent Model: Modified Wall Function", The Seventh Asia-Pacific Conference on Wind Engineering, Taipei, Taiwan, 2009.
[22]	Versteeg, H.K. and Malalasekera, W., "An Introduction to Computational Fluid Dynamics: the Finite Volume Method", Prentice Hall, Malaysia, 2007.
[23]	ANSYS, Inc., "ANSYS FLUENT, Release 14.0: Installation and User's Guide", SAS IP, Inc., 2013.
[24]	Roy, A.K., Babu, N., Bhargava, P.K., "Atmospheric Boundary Layer Airflow theough CFD Simulation on Pyramidal Roof of Square Plan Shape Buildings", VI National Conference on Wind Engineering, 2012.
[25]	Rados, K.G., Prospathopoulos, J.M., Stefanatos, N.Ch., Politis, E.S., Chaviaropoulos, P.K. , and Zervos, A., " CFD modeling issues of wind turbine wakes under stable atmospheric conditions", EWEC ’09 Proceedings, Marseille, 2009.
[26]	Yang, W., Quan, Y., Jin, X., Tamura, Y. and Gu, M., "Influences of Equilibrium Atmosphere Boundary Layer and Turbulence Parameter on Wind Loads of Low-rise Buildings", J. of Wind Eng. and Ind. Aerody., vol. 96, no. 10, pp. 2080-2092, 2008.
[27]	Liu, B., Qu, J., Zhang, W. and Qian, G., "Numerical Simulation of Wind Flow over Transverse and Pyramid Dunes", Journal of Wind Engineering and Industrial Aerodynamics, vol. 99, no. 8, pp. 879-888, 2011.
[28]	Joubert, E.C., Harms, T.M., Muller, A., Hipondoka, M. and Henschel, J.R., "A CFD Study of Wind Patterns over a Desert Dune and the Effect on Seed Dispersion", Environmental Fluid Mechanics, vol. 12, no. 1, pp. 23-44, 2012.
[29]	Alinot, C. & Masson, C., "k-ε Model for the Atmospheric Boundary Layer Under Various Thermal Stratifications", Journal of Solar Energy Engineering, vol. 127, no. 4, pp. 438- 443,2005.
[30]	White, F.M., "Viscous Fluid Flow", McGraw-Hill, New York, 1991.
[31]	Richards P., Hoxey R., "Appropriate boundary conditions for computational wind engineering models using the k- turbulence model", J. of Wind Eng. and Industrial Aerodynamics, 46,47, 145-153, 1993.
[32]	Wilcox D., "Turbulence modelling for CFD", DCW Industries, California, 1993.
[33]	Richards P., Norris S., "Appropriate boundary conditions for computational wind engineering models revisited", J. of Wind Eng. and Indus. Aerody., 99, 257-266, 2011.
[34]	Launder, B.E. and Spalding, D. , "The Numerical Computation of Turbulent Flows", Computer Methods in Applied Mechanics and Engineering, vol. 3, no. 2, pp. 269-289, 1974.
[35]	Sumner, J., Sibuet, Ch. W., and Masson, Ch., "CFD in Wind Energy: The Virtual, Multiscale Wind Tunnel", Energies, 3, 989-1013, 2010.

Cite This Article

Plain Text BibTeX RIS

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

Copy | Download

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

Copy | Download

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

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

Download PDF

Sections

Plain Text BibTeX RIS

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

Copy | Download

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

Copy | Download

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