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Non-gaussian turbulence

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Abstract

The pdf`s of atmospheric turbulence have somewhat wider tails than a Gaussian, especially regarding accelerations, whereas velocities are close to Gaussian. This behaviour is being investigated using data from a large WEB-database in order to quantify the amount of non-Gaussianity. Models for non-Gaussian turbulence have been developed, by which artificial turbulence can be generated with specified distributions, spectra and cross-correlations. The artificial time series will then be used in load models and the resulting loads in the Gaussian and the non-Gaussian cases will be compared. (au)
Authors:
Hoejstrup, J; [1]  Hansen, K S; [2]  Pedersen, B J; [3]  Nielsen, M [4] 
  1. NEG Micon Project Development A/S, Randers (Denmark)
  2. Denmarks Technical Univ., Dept. of Energy Engineering, Lyngby (Denmark)
  3. VESTAS Wind Systems A/S, Lem (Denmark)
  4. Risoe National Lab., Wind Energy and Atmospheric Physics, Roskilde (Denmark)
Publication Date:
Mar 01, 1999
Product Type:
Conference
Report Number:
RISO-R-1114(EN); CONF-990314-
Reference Number:
SCA: 170100; PA: DK-99:001411; EDB-99:087289; SN: 99002098317
Resource Relation:
Conference: EWEC`99. European wind energy conference, Nice (France), 1-5 Mar 1999; Other Information: PBD: Mar 1999; Related Information: Is Part Of Contributions from the Department of Wind Energy and Atmospheric Physics to EWEC `99 in Nice, France; Larsen, Gunnar C.; Westermann, Kirsten; Noergaard, Per [eds.]; PB: 256 p.
Subject:
17 WIND ENERGY; TURBULENCE; WIND LOADS; TIME-SERIES ANALYSIS; GAUSS FUNCTION
OSTI ID:
679629
Research Organizations:
Risoe National Lab., Roskilde (Denmark). Wind Energy and Atmospheric Physics Dept.
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE99747779; CNN: Contract ENS-1363/97-0032; ISBN 87-550-2542-0; TRN: DK9901411
Availability:
OSTI as DE99747779
Submitting Site:
DK
Size:
pp. 149-151
Announcement Date:
Oct 15, 1999

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Citation Formats

Hoejstrup, J, Hansen, K S, Pedersen, B J, and Nielsen, M. Non-gaussian turbulence. Denmark: N. p., 1999. Web.
Hoejstrup, J, Hansen, K S, Pedersen, B J, & Nielsen, M. Non-gaussian turbulence. Denmark.
Hoejstrup, J, Hansen, K S, Pedersen, B J, and Nielsen, M. 1999. "Non-gaussian turbulence." Denmark.
@misc{etde_679629,
title = {Non-gaussian turbulence}
 author = {Hoejstrup, J, Hansen, K S, Pedersen, B J, and Nielsen, M}
 abstractNote = {The pdf`s of atmospheric turbulence have somewhat wider tails than a Gaussian, especially regarding accelerations, whereas velocities are close to Gaussian. This behaviour is being investigated using data from a large WEB-database in order to quantify the amount of non-Gaussianity. Models for non-Gaussian turbulence have been developed, by which artificial turbulence can be generated with specified distributions, spectra and cross-correlations. The artificial time series will then be used in load models and the resulting loads in the Gaussian and the non-Gaussian cases will be compared. (au)}
 place = {Denmark}
 year = {1999}
 month = {Mar}
 }