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Mostrando ítems 61-70 de 154
Análise analítica e numérica do escoamento em um veículo lançador de CubeSats aplicando a tecnologia da combustão supersônica no segundo estágio de propulsão
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA AEROESPACIAL, 2021-10-15)
Current rocket engines have a low specific thrust compared to the airbreathing propulsion
technologies. Airbreathing supersonic combustion engines/vehicles are an alternative to
improve the efficiency of access to space ...
The numerical computation of near-wall turbulent flow over a steep hill
(ElsevierBrasilNúcleo Interdisciplinar de Dinâmica dos Fluidos, 2019)
Túnel de vento: um produto educacional acessível
(Universidade Federal de PernambucoUFPEBrasilPrograma de Pos Graduacao em Ensino de Fisica, 2019)
Numerical simulations of active flow control with synthetic jets in a Darrieus turbine
(Elsevier, 2017-12)
This study presents two-dimensional numerical simulations of the flow around a cross-flow vertical-axis water turbine (straight-bladed Darrieus type) using active flow control by means of synthetic jets. The performance ...
Projeto de adaptação do sistema de injeção do túnel transônico para ensaios em bocais de foguete
(Universidade Estadual Paulista (Unesp), 2015-12-15)
In this work, the project of a new experimental facility to be installed at the Aerodynamics Division of the Institute of Aeronautics and Space is presented. This new facility will provide means to perform experimental ...
Estudo das tecnologias de eficiência energética para redução de consumo de combustível automotivo com ênfase nas interações entre tecnologias com aplicação da metodologia DoE
(Universidade Federal de Minas GeraisUFMG, 2018-07-27)
This work presents a study of energy efficiency technologies applied in automotive vehicles considering the interactions between technologies. The fuel consumption of automotive vehicles is an important factor in current ...
Sistema de detecção e classificação de patologias vocais baseado no domínio espectral da função de correntropia
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA ELÉTRICA E DE COMPUTAÇÃO, 2019-01-18)
Vocal pathologies negatively affect the social and professional life of the patients,
some of which may even lead to death if they are not treated quickly. Among the main
procedures for the diagnosis of vocal disorders ...
A swarm optimization algorithm for multimodal functions and its application in multicircle detection
(2013)
In engineering problems due to physical and cost constraints, the best results, obtained by a global optimization algorithm, cannot be realized always. Under such conditions, if multiple solutions (local and global) are ...
Tecnologías IoT aplicadas a la monitorización de ciclovías en la ciudad de Cuenca
(Universidad de Cuenca, 2020-10-14)
The present thesis focuses on analyzing the problem regarding comfort levels of the cyclist. The
monitoring is carried out using the IoT technologies. This technological proposal focuses on the
collection of data regarding ...
PM10 emission, sandblasting efficiency and vertical entrainment during successive wind-erosion events: a wind-tunnel approach
(Springer, 2016-11)
A wind-tunnel experiment was carried out to measure saltation and PM10 (particulate matter with a mean aerodynamic diameter less than 10
μ
μ
m) emission during three successive wind-erosion events on three different ...