Three-dimensional phenomena, related to the fluid dynamic behavior of the plasma and secondary gas in the region between the torch tip and the workpiece, have been studied by means of a 3-D FLUENT-based numerical model, with the final aim of optimizing the design of a prototype monogas plasma arc cutting torch, operating in the range 25-100 A. The details of the spacer for contact cutting geometry and of the metallic substrate with the keyhole are included in the computational domain. The development of a 3-D model was necessary to solve specific design issues that cannot be properly studied by 2-D models, providing also useful results to be compared with experimental evidences coming from diagnostic and cut quality/erosion tests.
Three-dimensional design-oriented simulation of PAC torches / Colombo V.; Concetti A.; Ghedini E.. - In: IEEE TRANSACTIONS ON PLASMA SCIENCE. - ISSN 0093-3813. - STAMPA. - 39:11(2011), pp. 2902-2903. [10.1109/TPS.2011.2146794]
Three-dimensional design-oriented simulation of PAC torches
COLOMBO, VITTORIO;CONCETTI, ALESSIA;GHEDINI, EMANUELE
2011
Abstract
Three-dimensional phenomena, related to the fluid dynamic behavior of the plasma and secondary gas in the region between the torch tip and the workpiece, have been studied by means of a 3-D FLUENT-based numerical model, with the final aim of optimizing the design of a prototype monogas plasma arc cutting torch, operating in the range 25-100 A. The details of the spacer for contact cutting geometry and of the metallic substrate with the keyhole are included in the computational domain. The development of a 3-D model was necessary to solve specific design issues that cannot be properly studied by 2-D models, providing also useful results to be compared with experimental evidences coming from diagnostic and cut quality/erosion tests.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
