Navegação Engenharias por Autor "Wittwer, Adrián Roberto"

Resultados 1-8 de 8

    • 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 ...

    • Avaliação das flutuações de concentração em uma pluma de dispersão de poluentes 

      Wittwer, Adrián Roberto; Loredo-Souza, Acir Mércio; Camaño Schettini, Edith Beatriz (2007) [Artigo de periódico]

    • 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 ...

    • Study of gas turbulent dispersion process in the Alcântara Launch Center 

      Wittwer, Adrián Roberto; Loredo-Souza, Acir Mércio; Oliveira, Mário Gustavo Klaus; Fisch, Gilberto Fernando; Souza, Bianca Hulle de; Goulart, Elisa Valentim (2018) [Artigo de periódico]
      The Alcântara Launch Center (ALC) is the Brazilian gate to the space located at the north coast of Maranhão State, close to the Equator. Topographical local characteristics modify the parameters of incident atmospheric ...

    • 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. ...