WALMIR MAXIMO TORRES
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Artigo IPEN-doc 17556 Comparison between experimental data and numerical modeling for the natural circulation phenomenon2011 - SABUNDJIAN, GAIANE; ANDRADE, DELVONEI A. de; UMBEHAUN, PEDRO E.; TORRES, WALMIR M.; MACEDO, LUIZ A.; CONTI, THADEU N.; MESQUITA, ROBERTO N. de; ANGELO, GABRIELArtigo IPEN-doc 18093 A numerical and three-dimensional analysis of steady state rectangular natural circulation loop2012 - ANGELO, G.; ANDRADE, D.A.; ANGELO, E.; TORRES, W.M.; SABUNDJIAN, G.; MACEDO, L.A.; SILVA, A.F.Free convection circuits or natural circulation systems are employed in several engineering fields. In nuclear reactors, natural circulation can be used as a passive safety system or as a main heat transfer mechanism. This work presents the results of a three-dimensional numerical analysis of a steady state rectangular natural circulation loop located at the Instituto de Pesquisas Energéticas e Nucleares/Comissão Nacional de Energia Nuclear (IPEN/CNEN-SP). Numerical results and experimental data present in this paper are discussed and compared. The model is good enough to capture 3-D effects, such as the formation of vortex structures and swirl effects.Artigo IPEN-doc 18189 Classification of natural circulation two-phase flow patterns using fuzzy inference on image analysis2012 - MESQUITA, R.N. de; MASOTTI, P.H.F.; PENHA, R.M.L.; ANDRADE, D.A.; SABUNDJIAN, G.; TORRES, W.M.; MACEDO, L.A.