Open Access
Table 1
List of orifices and their dimensions and the measured relative drag coefficients. A reference of the orifice geometry is shown in Figures 3 and 4.
| β (%) | Measured Do [mm] | δo [mm] | Upstream edge |
Downstream edge |
δtip [mm] |
 at Rep = 104 |
||
|---|---|---|---|---|---|---|---|---|
| Angle |
 [mm] |
Angle |
 [mm] |
|||||
| 11 | 2.98 | 1.50 | 90° | 0.00 | 90° | 0.00 | 1.50 | 0.80 |
| 3.00 | 1.50 | 45° | 0.50 | 90° | 0.00 | 1.00 | 0.55 | |
| 2.98 | 1.50 | 45° | 0.50 | 45° | 0.50 | 0.50 | 0.68 | |
| 20 | 3.98 | 2.00 | 90° | 0.00 | 90° | 0.00 | 2.00 | 0.81 |
| 3.99 | 2.00 | 45° | 0.10 | 45° | 0.10 | 1.80 | 0.75 | |
| 4.03 | 2.00 | 45° | 0.10 | 45° | 0.50 | 1.40 | 0.60 | |
| 4.03 | 2.00 | 45° | 0.10 | 45° | 1.40 | 0.50 | 0.75 | |
| 3.98 | 0.50 | 90° | 0.00 | 90° | 0.00 | 0.50 | 0.90 | |
| 3.99 | 0.50 | 90° | 0.00 | 45° | 0.20 | 0.30 | 0.94 | |
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