Ėsim (mW)*1
|
0.56 |
1.87 |
2.68 |
3.88 |
3.69 |
5.97 |
4.16 |
3.56 |
0.87 |
11.7 |
3.89 |
3.19 |
Ėsim ∩ U⃑n(mW)*2
|
0.52 |
1.67 |
2.53 |
3.28 |
3.05 |
4.65 |
3.24 |
2.84 |
0.71 |
10.9 |
3.34 |
2.93 |
Ẇτ(μW)*3
|
1.47 |
3.34 |
2.11 |
1.67 |
1.33 |
5.95 |
4.07 |
3.04 |
2.08 |
3.7 |
2.88 |
1.45 |
Ẇq(μW)*4
|
−1.58 |
2.36 |
−1.09 |
2.29 |
1.72 |
10.03 |
1.16 |
22.9 |
0.39 |
11.6 |
4.98 |
7.68 |
Ėloss(mW)*5
|
0.52 |
1.67 |
2.53 |
3.28 |
3.05 |
4.65 |
3.24 |
2.82 |
0.71 |
10.9 |
3.33 |
2.92 |
Φ(mW)*6
|
0.52 |
1.64 |
2.42 |
3.17 |
2.93 |
4.56 |
3.14 |
2.76 |
0.7 |
10.4 |
3.22 |
2.79 |
|
ΔĖsim
ǂ1
|
−7% |
−12% |
−6% |
−18% |
−21% |
−28% |
−28% |
−26% |
−22% |
−8% |
−17.7% |
9.0% |
Δ(Ėsim ∩ U⃑n) ǂ2
|
−8% |
−12% |
−6% |
−19% |
−21% |
−28% |
−28% |
−25% |
−23% |
−8% |
−17.7% |
8.8% |
ΔẆτ
ǂ3
|
0.3% |
0.2% |
0.1% |
0.1% |
0.0% |
0.1% |
0.1% |
0.1% |
0.3% |
0.0% |
0.1% |
0.1% |
ΔẆq
ǂ4
|
−0.3% |
0.1% |
0.0% |
0.1% |
0.1% |
0.2% |
0.0% |
0.8% |
0.1% |
0.1% |
0.1% |
0.3% |
ΔΦ
ǂ5
|
0.6% |
1.9% |
4.5% |
3.3% |
3.9% |
1.8% |
3.2% |
2.1% |
1.6% |
4.5% |
2.7% |
1.3% |
|
§Avg = average value |
§§SD = standard deviation |
*1Ėsim
|
simplified power loss |
*2Ėsim ∩ U⃑n
|
power loss with correctly calculated velocity profile (U⃑n) |
*3Ẇτ = ∫CS
τ⃑ · U⃑ dA
|
viscous work present on the control surface |
*4
|
effect of time-derivatives of dynamic pressure and volume |
*5Ėloss = (Ėsim ∩ U⃑n) + Ẇτ − Ẇq
|
true power loss |
*6Φ
|
viscous dissipation rate |
ǂ1ΔĖsim = (Ėloss − Ėsim)/Ėloss
|
discrepancy between simplified and true power losses |
ǂ2Δ(Ėsim ∩ U⃑n) = 1 ∸ Ėsim/(Ėsim ∩ U⃑n) |
time-averaged percentage discrepancy between power loss obtained using an accurate spatial velocity profile (assumption #5) and true power loss. |
ǂ3 ΔẆτ = Ẇτ/Ėloss
|
time-averaged effect of viscous work on the control surface, assumption #2 |
ǂ4 ΔẆq = Ẇq/Ėloss
|
time-averaged effect of control volume and dynamic pressure, assumption #3 |
ǂ5ΔΦ = (Ėloss − Φ)/Ėloss
|
time-averaged discrepancy between viscous dissipation rate and true power loss |