TY - JOUR A1 - Martínez Pastor, Juan AU - Franco Chumillas, Patricio AU - Moratilla Fernández, Domingo AU - López García, Pedro José AU - Faura Mateu, Félix T1 - Simulation of gelled propellant doughs isothermal flow through extrusion dies using finite difference method Y1 - 2017 SN - 2351-9789 UR - http://hdl.handle.net/10317/8538 AB - During the ram extrusion of gelled propellants, the possible flow instabilities can affect the extruded propellant quality. The numerical modelling helps to enhance the geometry of extrusion die, by minimizing the product distortion caused by material flow during this forming process. In the present work, a numerical model based on the finite difference method is proposed to analyze the flow simulation of double-base gelled propellant doughs through annular channels of extrusion dies. The proposed model implements the pseudo-plastic behavior described by these energetic materials. This model will be used to deduce the configuration of spider legs and annular channels that allow optimize the quality of extruded gelled propellant. KW - Ingeniería de los Procesos de Fabricación KW - Gelled propellants KW - Ram extrusion KW - Numerical simulation KW - Extrusion die KW - Annular channels KW - 3313 Tecnología E Ingeniería Mecánicas LA - eng PB - Elsevier ER -