Publication detail

Assessment of Energy Spectra Discretization of Stochastic Noise Generation and Radiation Model

NIEDOBA, P. JÍCHA, M. ČERMÁK, L.

Original Title

Assessment of Energy Spectra Discretization of Stochastic Noise Generation and Radiation Model

English Title

Assessment of Energy Spectra Discretization of Stochastic Noise Generation and Radiation Model

Type

conference paper

Language

en

Original Abstract

The paper deals with the Stochastic Noise Generation and Radiation (SNGR) model based on synthesizing of turbulent velocity components from known turbulent flow properties, e.g. turbulent kinetic energy, turbulence dissipation rate and energy spectra. Using these input parameters the output turbulent velocity field is generated by the synthesis of a finite sum of random Fourier modes. The distrubution and the number of these modes has a direct impact on accuracy and computational demands. The purpose of this research is to show the dependence of the SNGR model on the Fourier modes distribution. Another goal is to determine the minimal number of Fourier modes for each distribution.

English abstract

The paper deals with the Stochastic Noise Generation and Radiation (SNGR) model based on synthesizing of turbulent velocity components from known turbulent flow properties, e.g. turbulent kinetic energy, turbulence dissipation rate and energy spectra. Using these input parameters the output turbulent velocity field is generated by the synthesis of a finite sum of random Fourier modes. The distrubution and the number of these modes has a direct impact on accuracy and computational demands. The purpose of this research is to show the dependence of the SNGR model on the Fourier modes distribution. Another goal is to determine the minimal number of Fourier modes for each distribution.

Keywords

Stochastic Noise Generation and Radiation model, energy spectra, stochastics

RIV year

2015

Released

09.08.2015

Pages from

1

Pages to

6

Pages count

6

BibTex


@inproceedings{BUT115678,
  author="Pavel {Niedoba} and Miroslav {Jícha} and Libor {Čermák}",
  title="Assessment of Energy Spectra Discretization of Stochastic Noise Generation and Radiation Model",
  annote="The paper deals with the Stochastic Noise Generation and Radiation (SNGR) model based
on synthesizing of turbulent velocity components from known turbulent flow properties,
e.g. turbulent kinetic energy, turbulence dissipation rate and energy spectra. Using these
input parameters the output turbulent velocity field is generated by the synthesis of a finite
sum of random Fourier modes. The distrubution and the number of these modes has a
direct impact on accuracy and computational demands. The purpose of this research is
to show the dependence of the SNGR model on the Fourier modes distribution. Another
goal is to determine the minimal number of Fourier modes for each distribution.",
  booktitle="Proceedings of INTER-NOISE 2015",
  chapter="115678",
  howpublished="electronic, physical medium",
  year="2015",
  month="august",
  pages="1--6",
  type="conference paper"
}