126 documents found, page 1 of 13
Physical characteristics and fertility of fractionated donkey semen cooled at 5°C
Carvalho, L. E.; Silva Filho, J. M.; Palhares, M. S.; Sales, A. L.R.; Gonczarowska, A. T.; Oliveira, H. N. [UNESP]; Resende, M. C.; Neves, M. G.Made available in DSpace on 2018-12-11T16:46:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-01-01. Added 1 bitstream(s) on 2019-10-09T18:29:12Z : No. of bitstreams: 1 S0102-09352017000100029.pdf: 700071 bytes, checksum: d6d90a9ceb74cd8355c72153ddb32367 (MD5); The aim of this study was to evaluate the effect of two different extenders (Skimmed Milk Glucose-SMG or Lactose-Egg Yolk-LEY) on physical char...
A 3D numerical wave tank for coastal engineering studies
Didier, E.; Teixeira, P.; Neves, M. G.This paper presents the validation of active and passive, made by a dissipation beach, numerical absorbing methods implemented in RANS-VOF FLUENT® code for modelling long time series of wave propagation interacting with coastal structures. Verification of both numerical techniques was performed in 2D – wave flume, and 3D – wave tank, this one using a multiple active absorption wave makers. The active absorption...
O papel da modelação física no apoio aos estudos de engenharia costeira e portu...
Fortes, C. J. E. M.; Capitão, R.; Lemos, R.; Neves, M. G.; Pinheiro, L.; Reis, M. T. L. G. V.Neste artigo, apresenta-se uma descrição do papel da modelação física no apoio aos estudos de Engenharia Costeira e Portuária, ilustrando-se as suas potencialidades com exemplos de casos de estudo. Referem-se os contributos inovadores em conceitos, equipamentos, técnicas e procedimentos experimentais que têm sido desenvolvidos nos recentes anos. Assim, apresentam-se metodologias a explorar no futuro, tais como ...
Application of URANS-VOF models in hydrodynamic study of oscillating water column
Dias, J.; Mendonça, A. C.; Didier, E.; Neves, M. G.; Conde, J. M.; Teixeira, P.This paper presents a comparison of two URANS models based on the VoF approach, FLUENT (Fluent, 2006) and IH2VOF (Lara et al., 2011), to perform a detaiied analysis of the hydrodynamic phenomena outside and inside an open Oscillating Water Coiumn (OWC) device. This analysis is important to determine the ability of each solver in accurate modelling the complex non-linear phenomena which occur in the wave-fluid-s...
A new application of the nonlinear shallow water numerical model AMAZON to stud...
Reis, M. T. L. G. V.; Mestre, R.; Neves, M. G.; Hu, K.; Dias, J.; Mendonça, A. C.; Didier, E.; Fortes, C. J. E. M.This paper ilustrates lhe application of a non-linear shallow water numerical model, AMAZON, to study Oscillating Water Column Wave Energy Converters (OWC-WEC) inregrated in vertical breakwaters. This application has been performed within the scope of the research project DITOWEC - Development of an Integrated Tool for Numerical Modelling of Oscillating Water Cohumn Wave Energy Converters Integrated in Vertical...
Design optimization of an oscillating water column wave energy converter: analy...
Mendonça, A. C.; Jalon, M.L.; Correia, R.; Dias, J.; Neves, M. G.; Didier, E.An analytical model is applied to a schematic case of an oscillating water column (OWC), without head loss, to obtain a first estimation of the chamber hydraulic efficiency. The IH2VOF numerical model of wave-structure interations is applied to perform an investigation, useful to complement and verify the analytical approach and analyses the flow characteristics on the OWC, including nonlinear effects. The nume...
Monitoring of the water particle velocity field near the seabed under different...
Khan-Mozahedy, A.B.M.; Muñoz-Perez, J.; Neves, M. G.Monitoring of water particle velocity on the sea bed is crucial to study morphological shore changes in a coast at intermediate and shallow water depth under progressive surface waves and tidal flow current. Therefore, 3-D particle velocity was monitored continuously at the bottom of Santa Maria del Mar (SMM) beach (SW Spain) by means of a single point current meter during 3 weeks in 2007 since August 28. The c...
Development of an integrated tool for numerical modelling of OWC-WECs in vertic...
Reis, M. T.; Didier, E.; Dias, J.; Mendonça, A. C.; Conde, J. M.; Neves, M. G.; Fortes, C. J. E. M.; Teixeira, P.This paper describes the advances on the research project DITOWEC – “Development of an Integrated Tool for Numerical Modelling of Oscillating Water Column Wave Energy Converters Integrated in Vertical Breakwaters", whose main objective is developing an innovative integrated tool for numerical modelling of wave propagation from offshore to nearshore, of wave-structure interaction and of the complex nonlinear hyd...
Força de impacto num quebra-mar vertical: comparação entre um modelo numérico S...
Didier, E.; Rodrigues, A.; Neves, M. G.; Neves, D. R.; Dias, J.O conhecimento dos esforços resultantes da interacção de uma onda com um quebra-mar vertical torna-se essencial no dimensionamento deste tipo de estruturas. No presente trabalho, o modelo numérico SPHyCE, baseado numa metodologia de tipo SPH - Smoothed Particle Hydrodynamics, é utilizado para o cálculo das forças num quebra-mar vertical. Para analisar a evolução das forças de impacto foram consideradas várias c...
Physical modelling as a fundamental tool for the design of harbours and maritim...
Reis, M. T.; Silva, L. G.; Neves, M. G.; Lemos, R.; Capitão, R.; Fortes, C. J. E. M.In this paper, a brief description of the role of physical modelling to support the design of harbours and maritime structures is presented, followed by an example of the tests carried out for the studies of the expansion of Rabo de Peixe fi shing harbour, at São Miguel – Azores. The variety of physical model tests conducted for this case study illustrates the fundamental potential of this modelling technique. ...