Figure 3 - uploaded by Christiane Montavon
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Streamlines and turbulence intensity close to the ground. An isosurface of positive swirling discriminant identifies regions with swirling local flow pattern. Simulation with k-, sector 239.
Contexts in source publication
Context 1
... no explicit recirculation was seen in the measurements, this recirculation in the model seems to be consistent with the wind speed reduction along line B as well as with the negative inclination measured in the vertical profile for M6 (not shown). This recirculation zone is visible in Figure 3, and is associated with a turbulence intensity hot spot in the proximity of M6. Although present in the simulation results, the data suggests that the intensity of this recirculation zone may be underestimated in the model. ...
Context 2
... inclination and veer angles are very well reproduced at this location (not shown). The simulation results show a 'dead' zone with slow flow parallel to the hill side (Figure 3). From the wind speed profile this 'dead' zone in the model may persist too far downstream, resulting in an underestimation of the wind speed and turbulence intensity. ...
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... To account for the fact that the leaf area density is likely to be decreasing with height, the forest canopy height is reduced from the tree height (by a factor 2/3) similar to the recommendations given in e.g. [7], [8]. ...
