ORBi: El Aissaoui Abdellah - Applying control volume finite element for modelling direct injection boom spraying flow

Reference : Applying control volume finite element for modelling direct injection boom spraying flow


	Document type :	Scientific congresses and symposiums : Unpublished conference
	Discipline(s) :	Life sciences : Agriculture & agronomy Engineering, computing & technology : Computer science
	To cite this reference:	http://hdl.handle.net/2268/71539

Title :	Applying control volume finite element for modelling direct injection boom spraying flow
Language :	English
Alternative title :	[en] Utilisation de la méthode des éléments de contrôle fini
Author, co-author :	El Aissaoui, Abdellah [ > > ]
	Lebeau, Frédéric [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
	Destain, Marie-France [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
	Houmy, Karim [ > > ]
Publication date :	23-Jun-2009
On invitation :	No
Audience :	International
Event name :	WCCA 2009– World Congress on Computers in Agriculture
Event date :	June 22nd through the 24th 2009
Event organizer :	ASABE
Event place (city) :	Reno
Event country :	Nevada
Keywords :	[en] Direct injection ; control volume method ; lag transport ; friction losses ; viscosity
Abstract :	[en] Assessment of injection lag transport and uniformity of direct injection boom sprayer is an important issue for successful variable rate spraying technology. To estimate the boom lag transport and pressure loss, a numerical model is formulated on the basis of fluid hydrodynamic conservation equations. The software is implemented in visual basic. To solve the pressure – velocities equations, control volume finite element method (CV) is used to delimit elementary volumes of the boom. Linearization of the conservation laws is ensured by considering discrete form of the equations and calculating velocity and pressure step by step throughout the whole boom. The flow behaviour is simulated into a boom section divided into N elementary volumes, each of them including one nozzle. To test the model, three boom diameters (5, 6 and 8 mm) and two chemical viscosities (10-6 and 10-5 m2/s) were used. Experimental trials are carried out on boom having 2.5 m length (5 nozzles) for measuring pressure gradient and lag transport. Results showed that the model can predict the pressure losses and the lag transport accurately (error within 5%) to optimize boom designs.
Funders :	Commission universitaire pour le Développement - CUD
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/71539

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Open access	ConfProceeding_WCCA2009_Elaissaoui_final_version.pdf		Author postprint	142.89 kB	View/Open

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