In this article, the flow pattern of an indirect dry cooling tower (Heller) under cross-wind conditions has been numerically investigated and the obtained results have been compared with the available experimental results. Furthermore, the phenomena responsible for the reduction of air intake flowrate (AIFR) under cross-wind conditions have been identified. The influences of wind speed increase on the flow pattern inside the tower and on the AIFR have been studied quantitatively and qualitatively. Finally, by adding radial windbreak walls to the base section of tower, their effect on the flow pattern and on tower performance from the AIFR perspective has been investigated.
Radosavljevic, D. and Spalding, D. B. Simultaneous prediction of internal and external aerodynamic and thermal flow field of a natural draft cooling tower in a cross wind. In Proceedings of 6th IAHR Cooling Tower Workshop, Pisa, October 1988.
2.
BergstromD. J.DerksenD.RezkallahK. S.Numerical study of wind flow over a cooling tower. J. Wind Eng. Ind. Aerodyn., 1993, 47, 657–664.
3.
PreezA. F. D.KroegerD. G.Effect of wind on performance of a dry-cooling tower. Recover System & CHP, 1993, 13(2), 139–146.
4.
WeiQ. D.ZhangB. Y.LiuK. Q.DuX. D.MengX. Z.A study of the unfavorable effects of wind on the cooling efficiency of dry cooling towers. J. Wind Eng. Ind. Aerodyn., 1995, 54, 633–643.
5.
DerksenD. D.BenderT. J.BergstromD. J.RezkallahK. S.A study on the effects of wind on the air intake flow rate of a cooling tower: Part 1. Wind tunnel study. J. Wind Eng. Ind. Aerodyn., 1996, 64, 47–59.
6.
SuM. D.TangG. F.FuS.Numerical simulation of fluid flow and thermal performance of a dry-cooling tower under cross wind condition. J. Wind Eng. Ind. Aerodyn., 1999, 79, 289–306.
7.
BornoffR. B.Mokhtarzadeh-DehghanM. R.A numerical study of interacting buoyant cooling-tower plumes. Atmos. Env., 2001, 35, 589–598.
8.
KapasN.Investigation of flow charachteristics of Heller-type cooling towers with different cooling delta angles. periodica politechnica ser. Mech. Eng., 2003, 2, 143–150.
9.
Al-WakedR.BehniaM.The performance of natural draft dry cooling towers under crosswind: CFD study. Int. J. Energy Res., 2004, 28, 147–161.
10.
Mokhtarzadeh-DehghanM. R.KonigC. S.RobinsA. G.Numerical study of single and two interacting turbulent plumes in atmospheric cross flow. Atmos. Env., 2006, 40, 3909–3923.
11.
ZhaiZ.FuS.Improving cooling efficiency of dry-cooling towers under cross-wind conditions by using wind-break methods. Appl. Therm. Eng., 2006, 26, 1008–1017.
12.
WilliamsonaN.ArmfieldaS.BehniaM.Numerical simulation of flow in a natural draft wet cooling tower – the effect of radial thermofluid fields. Appl. Therm. Eng., 2008, 28, 178–189.
13.
WellerH. G.TaborG.JasakH.FurebyC.A tensorial approach to computational continuum mechanics using object-oriented techniques. Comput. Phys., 1998, 12, 620–631.
