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Wind field simulations at Askervein hill - WindSim

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height above ground (m)<br />

100<br />

10<br />

<strong>hill</strong> top<br />

varying n<br />

exp results<br />

grid a<br />

grid a<br />

grid c<br />

grid d<br />

1<br />

0.0 0.5 1.0 1.5<br />

fractionnal speed up<br />

Figure 3.4<br />

Figure 3.4 shows the inability of the grid to predict the flow within the first meters above the<br />

ground. Results of the <strong>simul<strong>at</strong>ions</strong> always underpredict experimental d<strong>at</strong>a below 20 meters.<br />

Figures 3.5 to 3.8 show the total velocity <strong>field</strong> for the different <strong>simul<strong>at</strong>ions</strong> with grids a, b, c<br />

and d. Velocities are displayed <strong>at</strong> the first cell row, with contours for the first component of<br />

velocity. These results can not be compared against experimental results but can help towards<br />

further understanding of the different cases.<br />

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