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Wind speed record during the Andrews Air Force Base microburst recorded on ...
Published Online: August 10, 2022
Fig. 1 Wind speed record during the Andrews Air Force Base microburst recorded on Aug. 1, 1983 (adapted from Fujita [ 5 ]) More
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Snapshot profile of a CFD simulation describing a paused downburst. Contour...
Published Online: August 10, 2022
Fig. 3 Snapshot profile of a CFD simulation describing a paused downburst. Contours represent the magnitude of the full wind velocity in m/s. The above simulation result corresponds to D = 1000 m, H = 2000 m, and V in,max = 40 m/s. More
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Normalized radial velocity profiles at the paused time instant (107 s). The...
Published Online: August 10, 2022
Fig. 4 Normalized radial velocity profiles at the paused time instant (107 s). The results correspond to D = 1000 m, H = 2000 m, and V in,max = 40 m/s. More
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Variation of the peak radial velocity with radial distance at the paused ti...
Published Online: August 10, 2022
Fig. 5 Variation of the peak radial velocity with radial distance at the paused time instant (107 s). The results correspond to D = 1000 m, H = 2000 m, and V in,max = 40 m/s. More
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Piecewise approximations of a normalized peak radial velocity distribution ...
Published Online: August 10, 2022
Fig. 6 Piecewise approximations of a normalized peak radial velocity distribution at instant of the pause in the CFD simulations (i.e., at 107 s). The results correspond to D = 1000 m, H = 2000 m, and V in,max = 40 m/s. More
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Peak radial velocity distributions for the time-dependent model. The profil...
Published Online: August 10, 2022
Fig. 7 Peak radial velocity distributions for the time-dependent model. The profiles at t = 0 correspond to the paused time instant (107 s). The results correspond to D = 1000 m, H = 2000 m, and V in,max = 40 m/s: ( a ) normalized radial velocity profiles at different time instants and ( ... More
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Comparison of a wind speed time series resulting from the paused downburst ...
Published Online: August 10, 2022
Fig. 8 Comparison of a wind speed time series resulting from the paused downburst model versus one from the Andrews AFB data More
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A summary of the procedure to generate the paused downburst model data: ( a...
Published Online: August 10, 2022
Fig. 12 A summary of the procedure to generate the paused downburst model data: ( a ) and to determine the mean (non-turbulent) velocity data at the turbine location and ( b ) note that the mean data obtained from the above procedure is further scaled with the storm intensity factor (Π( t )) and c... More
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Comparison of wind speed (with turbulence) at hub height simulated using bo...
Published Online: August 10, 2022
Fig. 13 Comparison of wind speed (with turbulence) at hub height simulated using both the models. Parameters used to obtain these results are: R 0 = 4 km, θ 0 = 180 deg, ϕ = 15 deg, k rm = 1 m/s, U trans = 8 m/s, U amb = 6 m/s, H = 2000 m, D = 1000 m, V in, max = 40 m/s, ... More
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Downburst simulation case with  R  0  = 4 km,  θ  0  = 180 deg,  ϕ  = 15 de...
Published Online: August 10, 2022
Fig. 14 Downburst simulation case with R 0 = 4 km, θ 0 = 180 deg, ϕ = 15 deg, k rm = 1 m/s, U trans = 8 m/s, U amb = 6 m/s, H = 2000 m, D = 1000 m, V in, max = 40 m/s, and t p = 107 s. The panels in each sub-figure show variation of different quantities with time. ( ... More
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Horizontal direction of wind speed and nacelle yaw position for both the mo...
Published Online: August 10, 2022
Fig. 15 Horizontal direction of wind speed and nacelle yaw position for both the models. Parameters used to obtain these results are: R 0 = 4 km, θ 0 = 180 deg, ϕ = 15 deg, k rm = 1 m/s, U trans = 8 m/s, U amb = 6 m/s, H = 2000 m, D = 1000 m, V in,max = 40 m/s, and t p... More
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