Dispersion Near to a Tall Stack

  • R. Steenkist
  • F. T. M. Nieuwstadt
Part of the NATO · Challenges of Modern Society book series (NATS, volume 1)


In many places data for σy have been measured. By combining these data, we found that σy for non-buoyant plumes from tall stacks can be given by
$${\sigma _y} = 0.079\,\, \times {\,^{0 \cdot 86}}{\sigma _{\rm A}}^{0 \cdot 57}$$
independent of roughness, stability and source height. For a rising buoyant plume
$${\sigma _z} = 0.6\Delta h$$
has been found. Using this, the maximum ground concentration for a rising plume is found when the plume rise is 2 x stack height at a distance x = (0.6 hS u QH 0·33)1·5, so that this distance depends on the wind velocity. A formula for the maximum concentration is given.


Wind Velocity Plume Height Buoyant Plume Plume Rise Source Height 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Press, New York 1981

Authors and Affiliations

  • R. Steenkist
    • 1
  • F. T. M. Nieuwstadt
    • 2
  1. 1.Environmental Research DepartmentN.V. KEMAArnhemThe Netherlands
  2. 2.Royal Netherlands Meteorological InstituteDe BiltThe Netherlands

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