Post-Processing Introduction
Bladed provides an integrated post-processing facility for analysis of calculation results. The following calculations are provided:
Basic statistics to calculate the mean, minimum, maximum, standard deviation, skewness and kurtosis of a signal.
Fourier harmonics to calculate the fourier components of a signal at multiples of rotor rotational frequency.
Periodic components to separate out the periodic and stochastic parts of a signal.
Extreme predictions to estimate lifetime extreme loads from a sample time history.
Auto spectrum to calculate the auto-spectral density (frequency spectrum) of a signal.
Cross spectrum to calculate cross-spectral density, coherence and transfer functions between any two signals.
Probability density to calculate the probability distribution of a signal.
Peak analysis to calculate the probability density of signal peaks and troughs.
Level crossing analysis to calculate the probability of crossing any particular threshold.
Rainflow cycle count for cycle counting of a signal for fatigue analysis, and calculation of damage equivalent loads.
Fatigue analysis to calculate fatigue damage.
Annual energy yield to calculate the annual energy yield as a function of mean wind speed from a power curve.
Channel combination and tabulation to combine and scale a number of signals (useful to produce a combined stress signal for fatigue analysis).
Ultimate loads to find the maximum and minimum values of loads and concurrent values of other loads.
Ultimate load cases to identify the load cases producing maximum and minimum values of specified loads.
Flicker to calculate the flicker severity due to voltage variations on the network caused by the turbine.
Linear model to convert the output of the Model Linearisation calculation into a state-space model suitable for control design, for example using Matlab.
Offshore Code Checking via direct links from Bladed to external third party code checking capabilities in Sacs and ANSYS.
Post-processing calculations may be run from the Calculation screen, by selecting the calculation required and pressing Run now or Run in Batch, or from the Post-processing screen (obtained by clicking the Analyse icon on the toolbar) by pressing the Execute now or Add to Batch buttons.
Last updated 30-08-2024