Data/hora: 12/06/2024 03:40:38

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Lower nappe aeration in smooth channels: experimental data and numerical simulation	
Autores: 	Arantes,Eudes J.; Porto,Rodrigo M.; Gulliver,John S.; Lima,Alberto C.M.; Schulz,Harry E.	
Data: 	2010-06-01	
Ano: 	2010	
Palavras-chave: 	Spillway aerators; Air entrainment; Air-water flows; Multiphase flows.	
Resumo: 	Bed aerators designed to increase air void ratio are used to prevent cavitation and related damages in spillways. Air entrained in spillway discharges also increases the dissolved oxygen concentration of the water, which can be important for the downstream fishery. This study considers results from a systematic series of measurements along the jet formed by a bed aerator, involving concentration profiles, pressure profiles, velocity fields and corresponding air discharges. The experimental results are, then, compared, with results of computational fluid dynamics (CFD) simulations with the aim of predicting the air discharge numerically. Comparisons with jet lengths and the air entrainment coefficients from the literature are also made. It is shown that numerical predictive tools furnish air discharges comparable to measured values. However, if more detailed predictions are desired, verification experiments are still necessary.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000200027	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/S0001-37652010000200027	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.82 n.2 2010	
Fonte: 	info:eu-repo/semantics/openAccess