Commenced in January 2007
Paper Count: 30172
Experimental Determination of Reactions of Wind-Resistant Support of Circular Stacks in Various Configurations
Authors: Debojyoti Mitra
Abstract:Higher capacities of power plants together with increased awareness on environmental considerations have led to taller height of stacks. It is seen that strong wind can result in falling of stacks. So, aerodynamic consideration of stacks is very important in order to save the falling of stacks. One stack is not enough in industries and power sectors and two or three stacks are required for proper operation of the unit. It is very important to arrange the stacks in proper way to resist their downfall. The present experimental study concentrates on the mutual effect of three nearby stacks on each other at three different arrangements, viz. linear, side-by-side and triangular. The experiments find out the directions of resultant forces acting on the stacks in different configurations so that proper arrangement of supports can be made with respect to the wind directionality obtained from local meteorological data. One can also easily ascertain which stack is more vulnerable to wind in comparison to the others for a particular configuration. Thus, this study is important in studying the effect of wind force on three stacks in different arrangements and is very helpful in placing the supports in proper places in order to avoid failing of stack-like structures due to wind.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1083343Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1187
 Vickery, B.J., and Clark, A.W., "Lift or across response of tapered stacks", ASCE J. Struct. Div., vol. 98, 1972, pp. 1-20.
 Van Koten, H., "Wind load on chimneys, Proc. IASS Symposium on Industrial Chimneys", 1973, Krakow, Poland.
 Hirsch, G. and Ruscheweyh, H., "Full scale measurements on steel chimney stacks", J. Ind. Aerodyn., vol. 1, 1976, pp. 341-347.
 Vickery, B.J., "Across wind buffeting in a group of four in-line model chimneys", J. Wind Engg. Ind. Aerodyn., vol. 8, 1981, pp. 177-193.
 Ruscheweyh, H., "Straked in-line steel stacks with low mass damping", J. Wind Engg. Ind. Aerodyn., vol. 8, 1981, pp. 203-210.
 Zdravkovich, M., "Reduction of effectiveness of means for suppressing wind-induced oscillation", Eng. Struct., vol. 6, 1984, pp. 344-349.
 Ohya, Y., "Drag of circular cylinders in the atmospheric turbulence", Fluid Dynamic Research, vol. 34, 2004, pp. 35-144.
 Irwin, H.P.A.H., "The design of spires for wind simulation", J. Wind Engg. Ind. Aerodyn., vol. 7, 1981, pp. 361-366.
 IS: 875 (Part 3) - 1987, "Code of practice for design loads for buildings and structures (Wind loads)", (Reaffirmed 1997).