Abstract: A low pressure fluidic oscillator having an oscillation chamber having a centerline, and a pair of mutually facing and complementary-shaped sidewalls, planar top and bottom walls, upstream end and downstream end walls. An input power nozzle is formed in the upstream end wall having a width P.sub.W and a depth PD.sub.D, for issuing a jet of liquid into the oscillation chamber and forming alternately pulsating vortices in the oscillation chamber on each side of the jet, respectively. An outlet opening is formed in the downstream end wall and substantially axially aligned with the power nozzle. A pair of short sidewalls diverge in a downstream direction from the outlet opening. The distance from the power nozzle to the outlet opening being L. A slot is formed in at least one of said top and bottom walls, the slot having a slot centerline which is spaced upstream from the outlet opening a distance from about the edge of the downstream end of said oscillation chamber to about 0.48L.

Abstract: A gas barbecue grill has a housing, a grate supported by the housing for supporting food for cooking, and a gas burner for supplying heat. The gas burner includes at least one fluidic burner element centrally located and projecting a heating flame aligned substantially along the centerline and downward. A heat distribution member having an axis aligned with the centerline has at least a pair of downwardly diverging planar elements with the burner projecting a flame along the centerline which heats the center of the distribution member. The heat distribution member has first and second groups of apertures, the first group of apertures being proximate one end of the heat distribution member and spaced from the center of each of said planar elements. A second group of apertures formed proximate the end of heat distribution member opposite the burner end and spaced from the center of the distribution member and in each of the planar elements.