Data/hora: 21/05/2024 17:20:03

Biblioteca(s): 	Embrapa Meio Norte / UEP-Parnaíba.	
Data corrente: 	18/08/1992	
Data da última atualização: 	18/06/2009	
Autoria: 	RAYEJ, M.; WALLENDER, W. W.	
Título: 	Furrow irrigation simulation time reduction.	
Ano de publicação: 	1985	
Fonte/Imprenta: 	Journal of Irrigation and Drainage Engineering, v. 111, n. 2, p. 134-146, june 1985.	
Idioma: 	Inglês	
Conteúdo: 	Temporal and spatial changes in the flow profile decrease with time under furrow irrigation, and these slow changes suggest modifications inthe simulation methods. Geometrically increasing time steps and node deletion at the upstream boundary are introduced and evaluated for accuracy and CPU time reduction. Increasing the time steps reduced CPU time without sacrificing accuracy significantly in predicting edvance. The geometric progression factor is estimated automatically from the first two advance increments, thus incorporating site-specific flow and infiltration characteristics. The moving left boundary method is slightly more accurate, but is less cost-efficient than the varying time-step modification for the example conditions.	
Palavras-Chave: 	Computer; Hydraulic.	
Thesagro: 	Computador; Hidráulica; Irrigação.	
Thesaurus Nal: 	irrigation.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP)	
Exemplares: 	CPAMN-UEPP - (1061-1) - ADD - SP - -- - SP 4581/1992 -  - 1992.04581 - DIS