Browsing Engineering by Author "Degrazia, Gervasio Annes"

Now showing items 1-7 of 7

    • Analysis of thermal and roughness effects on the turbulent characteristics of experimentally simulated boundary layers in a wind tunnel 

      Demarco, Giuliano; Martins, Luis Gustavo Nogueira; Bodmann, Bardo Ernst Josef; Puhales, Franciano Scremin; Acevedo, Otávio Costa; Wittwer, Adrián Roberto; Costa, Felipe Denardin; Roberti, Débora Regina; Loredo-Souza, Acir Mércio; Degrazia, Franco Caldas; Tirabassi, Tiziano; Degrazia, Gervasio Annes (2022) [Journal article]
      The aim of this paper is to analyse the thermal effects in a wind tunnel experiment to simulate the planetary boundary layer (PBL). Experiments were performed in the wind tunnel of the Laboratory of Constructions Aerodynamics ...

    • Derivation of a decorrelation timescale depending on source distance for inhomogeneous turbulence in a shear dominated planetary boundary layer 

      Degrazia, Franco Caldas; Degrazia, Gervasio Annes; Vilhena, Marco Tullio Menna Barreto de; Bodmann, Bardo Ernst Josef (2016) [Journal article]
      In the literature there exists a variety of pollution of dispersion models and in general, Lagrangian stochastic models are efficient and fundamentals tools in the investigation and study of turbulent diffusion phenomenon ...

    • Employing wind tunnel data to evaluate a turbulent spectral model 

      Wittwer, Adrián Roberto; Alvarez y Alvarez, Gisela Marina; Demarco, Giuliano; Martins, Luis Gustavo Nogueira; Puhales, Franciano Scremin; Acevedo, Otávio Costa; Degrazia, Gervasio Annes; Bodmann, Bardo Ernst Josef; Loredo-Souza, Acir Mércio (2016) [Journal article]
      In this study, spectra obtained from wind tunnel data are compared with a model that describes observed atmospheric neutral spectra. The investigation points out that there is a good conformity between both spectra for the ...

    • Espectros de turbulência medidos na camada atmosférica superficial e em um túnel de vento de camada limite 

      Wittwer, Adrián Roberto; Welter, Guilherme Sausen; Degrazia, Gervasio Annes; Loredo-Souza, Acir Mércio; Acevedo, Otávio Costa; Camaño Schettini, Edith Beatriz; Moraes, Osvaldo Luiz Leal de (2007) [Journal article]

    • Flow in the wake of wind turbines : turbulance spectral analysis by wind tunnel test 

      Wittwer, Adrián Roberto; Dorado, Rodrigo Martins; Alvarez y Alvarez, Gisela Marina; Degrazia, Gervasio Annes; Loredo-Souza, Acir Mércio; Bodmann, Bardo Ernst Josef (2016) [Journal article]
      The interaction between the incident wind and wind turbines in a wind farm causes mean velocity deficit and increased levels of turbulence in the wake. The turbulent flow is characterized by the superposition of wind turbine ...

    • Fluctuating velocity measurements in the turbulent wake of a wind turbine model 

      Wittwer, Adrián Roberto; Dorado, Rodrigo Martins; Loredo-Souza, Acir Mércio; Bodmann, Bardo Ernst Josef; Degrazia, Gervasio Annes; Bones, Arthur Panichi; Capeller, Bruno; Contini, André Carlos (2018) [Journal article]
      An experimental study of the turbulent wake of a wind turbine model was realized at the “Joaquim Blessmann” wind tunnel of the UFRGS. The turbine model was developed at the Universidade de Caxias do Sul and it represents ...

    • Wind tunnel experiments with neutral and convective boundary layer stabilities 

      Degrazia, Gervasio Annes; Bodmann, Bardo Ernst Josef; Wittwer, Adrián Roberto; Dorado, Rodrigo Martins; Degrazia, Franco Caldas; Demarco, Giuliano; Roberti, Débora Regina; Loredo-Souza, Acir Mércio; Acevedo, Otávio Costa; Martins, Luis Gustavo Nogueira (2018) [Journal article]
      The present contribution reports on the status of the STROMA experiment. As a novelty a new experimental setup in a wind tunnel allows to simulate different stability regimes with vertical heat flux in either direction. ...