| User Inputs : Please select options and fill out input values. On-line Unit Converter |
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 Please select the unit of input values (default : Metric)
If user would like to see English unit output, please select checkbox (default : Metric) |
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Metric(SI) unit [m, m/s] |
English unit [ft, mph] |
Output : English unit |
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Vertical (z), Horizontal (x) or 2-dimentional (x,z) locations for wind speed simulation
(Acceptable formats : Delimited by comma(,) or MATLAB-compatible, e.g., 4,8,12 or 4:4:12) |
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z [m, ft] : |
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x [m, ft] : |
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z [m, ft] : |
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x [m, ft] : |
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z [m, ft] : |
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Total number of frequency (N), cut-off frequency (fc).
Note that Δt = 1/(2fc); T = 2·N·Δt [in Ergodic SRM, T = 2·N·Δt·(total number of locations)] |
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N (max = 18000) : |
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fc [Hz] (max = 5) : |
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| Exposure category (A,B,C,D based on ASCE 7-98) and 3-sec gust wind speed (U3-s,10)
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A B C D |
U3-s,10 [m/s, mph] |
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| Wind simulation schemes |
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Discrete frequency function with Cholesky decomposition and FFT (max 200 locations) |
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Schur decomposition by AR model and polymonial approximation (max 100 locations) |
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Ergodic spectral representation with Cholesky decomposition and FFT (max 50 locations) |
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Conventional spectral representation method (max 200 locations) |
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NatHaz On-line Wind Simulator (NOWS) : Input Interface