CFD Simulation for Wind Load on Octagonal Tall Buildings
 |
International Journal of Engineering Trends and Technology (IJETT) | 
|
| © 2015 by IJETT Journal | ||
| Volume-24 Number-4 |
||
| Year of Publication : 2015 | ||
| Authors : Dr S.K. Verma, A.K Roy, Sunil Lather, Manoj Sood |
||
| DOI : 10.14445/22315381/IJETT-V24P239 |
Citation
Dr S.K. Verma, A.K Roy, Sunil Lather, Manoj Sood"CFD Simulation for Wind Load on Octagonal Tall Buildings", International Journal of Engineering Trends and Technology (IJETT), V24(4),211-216 June 2015. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Abstract
Lateral loads i.e. wind load, seismic load, govern the
design of tall buildings. Wind code IS 875 (PART-3rd) provides the
pressure coefficients (CP) only at 0º and 90º wind incidence angles
and only for few standard cases.Therefore, experimental studies
become important and wind tunnel experiment is carried out to
measure wind loads on the models of tall buildings at different wind
incident angles. CFD offers a very powerful alternative to predict
the wind related phenomena on buildings or different kind of
structures. A software package, FLUENT-14 (ANSYS 14.0) is used
for CFD analysis. CFD analysis is carried out considering the same
parameters as used in the experimental study.The buildings chosen
in present study is octagonal in plan. Mean area weighted average
wind pressures on the faces of the building models are measured in
order to study the effect of varying wind incident angles namely 0º,
15º and 30º on wind pressure distribution.
References
[1] ANSYS Ltd., 2010. Ansys Fluent solver, Release 14.0.0: Theory.
Canonsburg.
[2] Ansys tutorial manuals, Release 14.0.0.
[3] ASCE 7-95 Standard, minimum design load for buildings and
other structures, New York, 1995.
[4] Australian standard AS: 1170 Part 2, 1975
[5] B. Blocken, and J. Carmeliet, Pedestrian wind conditions at
outdoor platforms in a high-rise apartment building :generic subconfiguration
validation, wind comfort assessment and uncertainty
issues. Wind and Structures. 11(1) , Pages 51-70. 2008.
[6] B. Blocken, J. Carmeliet, , T. Stathopoulos, "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, Volume 95, Issues 9–11, Pages 941-
962. 2007a.
[7] B. Blocken, J. Carmeliet, T. Stathopoulos, “CFD simulation of the
atmospheric boundary layer: wall function problems”,
Atmospheric Environment, 41, 238–252. 2007b.
[8] B.J. Vickery, "Wind loads on low rise buildings", drc, seminar,
Darwin, Australia, 30 march, 1976.
[9] B.L. Sharma, & U.N .Sehgal, Study of exterme winds over North
India. Indian Journal of met. andgeophysies. Vol. 19. 1968.
[10] Code of practice for design loads (other than Earthquake forces)
for buildings and structures IS 875-1987 part 3 wind load Bureau
Indian Standard New Delhi.
[11] E. Jack. Cermark., wind tunnel studies of building and structures.
ASCE publications. 1998.
[12] Explanatory Handbook On Indian Standard Code Of Practice For
Design Loads (Other Than Earthquake) For Buildings And
Structures Part 3 Wind Loads [Is 875 (Part 3): 1987]
[13] H.C. Shellard, The estimation of design wind speeds. Proc. of
conference on Wind Effects on Buildings & Structure, NPL,
Middlesex. 1963.
[14] Hideyuki Tanaka, Yukio Tamura, Kazuo Ohtake, Masayoshi
Nakai, Yong Chul Kim. ``Experimental investigation of
aerodynamic forces and wind pressures acting on tall buildings
with various unconventional configurations``. J. Wind Eng. Ind.
Aerodyn. 107–108 (2012) 179–191, 2012
[15] http://www.grc.nasa.gov/www/wind/valid/tutorial/spatconv.html
[16] Kim Young-Moon, You Ki-Pyo, Nag-HoKo. Across-wind
responses of an aeroelastic tapered tall building. Journal of Wind
Engineering and Industrial Aerodynamics 96 (2008) 1307–1319.
2008.
[17] Kwok., "Effect of building shape on wind induced response of tall
buildings," Proceedings, 7th Int. Conf. on wind engineering,
Aachen, West Germany, 1987.
[18] M. Sanayei, L. Edgers, J.L. Alonge, and P. Kirshen, , “Effects of
increased wind loads on a tall building,” civil engineering practice,
vol. 19, no. 1, 2004.
[19] P. Mendis, T. Ngo, N. Haritos, A. Hira “Wind loading on tall
buildings.” 2007.
[20] P.J. Richards, R.P. Hoxey, Appropriate boundary conditions for
computational wind engineering models using the k-? turbulence
model. Journal of Wind Engineering and Industrial Aerodynamics
46&47, 145-153. 1993.
[21] Peterka and Cermak, "Aerodynamics of bluff bodies", Journal
fluid mechanics, vol.5, 1975.
[22] Revuz ., On the domain size for the steady-state CFD modelling of
a tall building.Wind and structures, Vol. 15, No. 4 (2012) 313-329.
2012
[23] S.K. Dalui " Wind effects on tall buildings with peculiar shapes " ,
PhD. Thesis, Dept. of Civil Engineering, I.I.T. Roorkee, Roorkee,
India. (2008).
[24] S.K. Verma “Wind effects on structurally coupled buildings”,
PhD. Thesis, Dept. of Civil Engineering, I.I.T. Roorkee, Roorkee,
India. (2009).
[25] S.K. Verma, A.K. Ahuja and A.D. Pandey “Effects of wind
incidence angle on wind pressure distribution on square plan tall
buildings” J. Acad. Indus. Res. Vol. 1(12) May 2013 pp 747 -752
[26] T. Stathopoulos and B.A . Baskaran. “Computer simulation of
wind environmental conditions around buildings”, Engineering
Structures, 18, pp. 876-885. 1996
[27] T. Stathopoulos, “Computational wind engineering: Past
achievements and future challenges”, Journal of Wind Engineering
and Industrial Aerodynamics, 67&68, pp. 509-532, 1997.
Keywords
Tall building; computational fluid dynamics (CFD);
pressure coefficients; wind tunnel testing; wind incidence angle