Navegação Engenharias por Autor "Degrazia, Gervasio Annes"
Resultados 1-7 de 7
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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) [Artigo de periódico]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) [Artigo de periódico]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) [Artigo de periódico]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) [Artigo de periódico] -
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) [Artigo de periódico]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) [Artigo de periódico]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) [Artigo de periódico]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. ...