Energies 2012, 5(7), 2071-2092; doi:10.3390/en5072071
Article

On Space-Time Resolution of Inflow Representations for Wind Turbine Loads Analysis

1 School of Civil Engineering, Purdue University, West Lafayette, IN 47907, USA 2 Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA 3 Department of Civil, Architectural and Environmental Engineering, University of Texas, Austin, TX 78712, USA
* Author to whom correspondence should be addressed.
Received: 13 April 2012; in revised form: 30 May 2012 / Accepted: 15 June 2012 / Published: 25 June 2012
(This article belongs to the Special Issue Wind Turbines)
PDF Full-text Download PDF Full-Text [3323 KB, Updated Version, uploaded 3 July 2012 11:36 CEST]
The original version is still available [3323 KB, uploaded 26 June 2012 08:55 CEST]
Abstract: Efficient spatial and temporal resolution of simulated inflow wind fields is important in order to represent wind turbine dynamics and derive load statistics for design. Using Fourier-based stochastic simulation of inflow turbulence, we first investigate loads for a utility-scale turbine in the neutral atmospheric boundary layer. Load statistics, spectra, and wavelet analysis representations for different space and time resolutions are compared. Next, large-eddy simulation (LES) is employed with space-time resolutions, justified on the basis of the earlier stochastic simulations, to again derive turbine loads. Extreme and fatigue loads from the two approaches used in inflow field generation are compared. On the basis of simulation studies carried out for three different wind speeds in the turbine’s operating range, it is shown that inflow turbulence described using 10-meter spatial resolution and 1 Hz temporal resolution is adequate for assessing turbine loads. Such studies on the investigation of adequate filtering or resolution of inflow wind fields help to establish efficient strategies for LES and other physical or stochastic simulation needed in turbine loads studies.
Keywords: large-eddy simulation; stochastic simulation; wind turbine loads

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Sim, C.; Basu, S.; Manuel, L. On Space-Time Resolution of Inflow Representations for Wind Turbine Loads Analysis. Energies 2012, 5, 2071-2092.

AMA Style

Sim C, Basu S, Manuel L. On Space-Time Resolution of Inflow Representations for Wind Turbine Loads Analysis. Energies. 2012; 5(7):2071-2092.

Chicago/Turabian Style

Sim, Chungwook; Basu, Sukanta; Manuel, Lance. 2012. "On Space-Time Resolution of Inflow Representations for Wind Turbine Loads Analysis." Energies 5, no. 7: 2071-2092.

Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert