Journal article
Estimation of the surface stress from the streamwise pressure gradient: The Kármán Integral Momentum Equation revisited
Environmental Fluid Mechanics, Vol.4(4), pp.367-383
2005
Abstract
A method is developed to estimate the stress at the surface in a portable wind tunnel for wind erosion studies. The boundary layer height and the pressure gradient are used in a simple expression from the Kármán Integral Momentum Equation. Values of friction velocity u* are within 10% of experimental values obtained through correlation techniques, including measurements of differential pressures with the Murdoch Turbulence Probe MTP and the X-wire, hot-wire anemometer XWA. Wind velocity and stress profiles reveal logarithmic trends and a 'constant stress layer' near the surface in the DAWA portable wind tunnel. Realignment of the statistics with the mean wind is essential.
Details
- Title
- Estimation of the surface stress from the streamwise pressure gradient: The Kármán Integral Momentum Equation revisited
- Authors/Creators
- P.A. Findlater (Author/Creator)W.D. Scott (Author/Creator)S.E. Greenhill (Author/Creator)J.M. Hopwood (Author/Creator)
- Publication Details
- Environmental Fluid Mechanics, Vol.4(4), pp.367-383
- Publisher
- Springer Netherlands
- Identifiers
- 991005545455707891
- Copyright
- © 2004 Kluwer Academic Publishers
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- Citation topics
- 8 Earth Sciences
- 8.205 Ocean Dynamics
- 8.205.2041 Wind Erosion
- Web Of Science research areas
- Environmental Sciences
- Mechanics
- Meteorology & Atmospheric Sciences
- Oceanography
- Water Resources
- ESI research areas
- Geosciences