Experimental Determination of Reactions of Wind-Resistant Support of Circular Stacks in Various Configurations
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.
[1] Vickery, B.J., and Clark, A.W., "Lift or across response of tapered
stacks", ASCE J. Struct. Div., vol. 98, 1972, pp. 1-20.
[2] Van Koten, H., "Wind load on chimneys, Proc. IASS Symposium on
Industrial Chimneys", 1973, Krakow, Poland.
[3] Hirsch, G. and Ruscheweyh, H., "Full scale measurements on steel
chimney stacks", J. Ind. Aerodyn., vol. 1, 1976, pp. 341-347.
[4] 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.
[5] Ruscheweyh, H., "Straked in-line steel stacks with low mass damping",
J. Wind Engg. Ind. Aerodyn., vol. 8, 1981, pp. 203-210.
[6] Zdravkovich, M., "Reduction of effectiveness of means for suppressing
wind-induced oscillation", Eng. Struct., vol. 6, 1984, pp. 344-349.
[7] Ohya, Y., "Drag of circular cylinders in the atmospheric turbulence",
Fluid Dynamic Research, vol. 34, 2004, pp. 35-144.
[8] Irwin, H.P.A.H., "The design of spires for wind simulation", J. Wind
Engg. Ind. Aerodyn., vol. 7, 1981, pp. 361-366.
[9] IS: 875 (Part 3) - 1987, "Code of practice for design loads for buildings
and structures (Wind loads)", (Reaffirmed 1997).
[1] Vickery, B.J., and Clark, A.W., "Lift or across response of tapered
stacks", ASCE J. Struct. Div., vol. 98, 1972, pp. 1-20.
[2] Van Koten, H., "Wind load on chimneys, Proc. IASS Symposium on
Industrial Chimneys", 1973, Krakow, Poland.
[3] Hirsch, G. and Ruscheweyh, H., "Full scale measurements on steel
chimney stacks", J. Ind. Aerodyn., vol. 1, 1976, pp. 341-347.
[4] 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.
[5] Ruscheweyh, H., "Straked in-line steel stacks with low mass damping",
J. Wind Engg. Ind. Aerodyn., vol. 8, 1981, pp. 203-210.
[6] Zdravkovich, M., "Reduction of effectiveness of means for suppressing
wind-induced oscillation", Eng. Struct., vol. 6, 1984, pp. 344-349.
[7] Ohya, Y., "Drag of circular cylinders in the atmospheric turbulence",
Fluid Dynamic Research, vol. 34, 2004, pp. 35-144.
[8] Irwin, H.P.A.H., "The design of spires for wind simulation", J. Wind
Engg. Ind. Aerodyn., vol. 7, 1981, pp. 361-366.
[9] IS: 875 (Part 3) - 1987, "Code of practice for design loads for buildings
and structures (Wind loads)", (Reaffirmed 1997).
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:63633", author = "Debojyoti Mitra", title = "Experimental Determination of Reactions of Wind-Resistant Support of Circular Stacks in Various Configurations", 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.", keywords = "Stacks, relative positioning, drag and lift forces,resultant forces and supports.", volume = "5", number = "3", pages = "732-6", }