476
V. Kaushik and R. N. Shankar
Demerit
Dynamic condition test, wind speed, and direction not constant
Executed by Sheldahl et al. [8]
Performed at Field test of 2 m Darrieus turbine at the Sandia National Laboratory
Conditions
Turbine speed 460 rpm, three blade configuration, Re No. 1.5 × 10 5 , rotational
speed 100 rpm, wind speed (v) is linearly proportional to the C p and directly
proportional with the TSR
Output
Optimum power coefficient obtained 0.34 at TSR 5.15 [9]
3.2 Experimentation Using Wind Tunnel Setup
Wide variety of experimentations with wind tunnel setup under varied conditions has
been performed by many researchers/authors. The objective of these experiments
was:
• To determine aerodynamic parameters under conditions like different Reynolds
number and different wind tunnels specifications
• To analyze performance of mono-, two-, and three-stage rotor at various aspect
ratios and Reynolds number. Comparison of TSR (0.7–1.0) corresponding to
maximum C p is showed in Table 1, and a comparative result of all the experiments
is presented in Table 2.
4 Conclusions
(1) This paper speaks about experiments done to assess parameters influencing
aerodynamics of VAWT.
Table 1 Comparison of tip speed ratios (0.7–1.0) corresponding to maximum C p [3]
Authors
Optimum TSR Authors
Optimum TSR
Kamoji et al. [10]
0.64–0.69
Gupta et al. [4]
0.4950
Dobrev and Massouh [11]
0.8
El Beheiry and El-Askary [12] 0.7
Scungio et al. [13]
1.24
Yoon and Lim [14]
0.39
Bergeles and Athanassiadis
[15]
0.7
Morshed et al. [16]
0.24
Fujisawa and Gotoh [17]
0.8–0.9
Malge and Pawar [18]
0.85
Morshed [19]
0.47
Vincenzo Dossena et al. [20]
2.5
Huda et al. [21]
0.68–0.71
Mishra et al. [22]
0.65
Sheldahl et al. [8]
0.7–1.0
Wenehenubun et al. [23]
0.555
V. Kaushik and R. N. Shankar
Demerit
Dynamic condition test, wind speed, and direction not constant
Executed by Sheldahl et al. [8]
Performed at Field test of 2 m Darrieus turbine at the Sandia National Laboratory
Conditions
Turbine speed 460 rpm, three blade configuration, Re No. 1.5 × 10 5 , rotational
speed 100 rpm, wind speed (v) is linearly proportional to the C p and directly
proportional with the TSR
Output
Optimum power coefficient obtained 0.34 at TSR 5.15 [9]
3.2 Experimentation Using Wind Tunnel Setup
Wide variety of experimentations with wind tunnel setup under varied conditions has
been performed by many researchers/authors. The objective of these experiments
was:
• To determine aerodynamic parameters under conditions like different Reynolds
number and different wind tunnels specifications
• To analyze performance of mono-, two-, and three-stage rotor at various aspect
ratios and Reynolds number. Comparison of TSR (0.7–1.0) corresponding to
maximum C p is showed in Table 1, and a comparative result of all the experiments
is presented in Table 2.
4 Conclusions
(1) This paper speaks about experiments done to assess parameters influencing
aerodynamics of VAWT.
Table 1 Comparison of tip speed ratios (0.7–1.0) corresponding to maximum C p [3]
Authors
Optimum TSR Authors
Optimum TSR
Kamoji et al. [10]
0.64–0.69
Gupta et al. [4]
0.4950
Dobrev and Massouh [11]
0.8
El Beheiry and El-Askary [12] 0.7
Scungio et al. [13]
1.24
Yoon and Lim [14]
0.39
Bergeles and Athanassiadis
[15]
0.7
Morshed et al. [16]
0.24
Fujisawa and Gotoh [17]
0.8–0.9
Malge and Pawar [18]
0.85
Morshed [19]
0.47
Vincenzo Dossena et al. [20]
2.5
Huda et al. [21]
0.68–0.71
Mishra et al. [22]
0.65
Sheldahl et al. [8]
0.7–1.0
Wenehenubun et al. [23]
0.555