Abstract: An additive manufacturing system includes a housing defining a chamber and a build platform disposed in a lower portion of the chamber. The additive manufacturing system includes a first gas inlet, disposed in a first side-wall of the chamber, configured to supply a first gas flow parallel to the build platform. The additive manufacturing system also includes a second gas inlet configured to supply a second gas flow in a direction substantially perpendicular to the build platform. The additive manufacturing system further includes a gas outlet configured to discharge the first and second gas flows from the chamber.

Abstract: An additive manufacturing apparatus is presented. The additive manufacturing apparatus includes a housing defining a chamber, a build platform disposed in the chamber, a first gas inlet configured to supply a first gas flow above the build platform, a second gas inlet configured to supply a second gas flow above the first gas flow and in substantially same direction to the first gas flow and a gas outlet configured to discharge a gas flow. An additive manufacturing method for fabricating an article is also presented.