Abstract: A device separates a fluid mass flow in a nuclear plant. The device contains a primary end piece for conducting the fluid mass flow and a plurality of secondary end pieces for conducting a plurality of separate partial flows of the fluid mass flow. A number of separating elements is provided in the area within the primary end piece, and each of the partial areas defined by the separating element or the separating elements opens in a secondary end piece clearly assigned to the partial area.

Abstract: This invention relates to a burner, especially a gas turbine burner, wherein a Helmholtz resonator downstream of a fuel inlet position in directly linked with a burner channel. In this manner, combustion oscillations do not arrive at the fuel inlet position, thereby reducing acoustic disturbances and air ration deviations which are the main cause for the formation of combined oscillations. The invention also relates to a method for operating a burner and a gas turbine.

Abstract: A muffler arrangement includes muffler elements arranged in rows which are oriented in each case transversely to a direction of flow. The muffler elements themselves are oriented in each case longitudinally in relation to the direction of flow. The distance between two adjacent muffler rows in this case amounts to approximately at least four times, or at least six times, the distance between two adjacent muffler elements of the equidistantly arranged muffler elements of a muffler row and/or the flow off edges of the muffler elements of at least one muffler row have guide plates. Equipping of the muffler elements of the last muffler row in the direction of flow may be dispensed with.

Abstract: A muffler arrangement includes muffler elements arranged in rows which are oriented in each case transversely to a direction of flow. The muffler elements themselves are oriented in each case longitudinally in relation to the direction of flow. The distance between two adjacent muffler rows in this case amounts to approximately at least four times, or at least six times, the distance between two adjacent muffler elements of the equidistantly arranged muffler elements of a muffler row and/or the flow off edges of the muffler elements of at least one muffler row have guide plates. Equipping of the muffler elements of the last muffler row in the direction of flow may be dispensed with.

Abstract: A combustion device for the combustion of fuel, includes a supply duct for supplying a fuel to a combustion zone. The fuel is capable of being guided through the supply duct in a fluid stream with a direction of flow and at a nominal velocity lying within a nominal operating interval. Further, the supply duct is narrowed in an uncoupling region, such that at the nominal velocity, sound waves running opposite to the direction of flow in the fluid stream from the combustion zone are at least partially reflected in the uncoupling region.

Abstract: A transducer acoustic emission testing of a structural part includes a commercially available accelerometer having at least one piezoelectric element and one seismic mass. The accelerometer is typically tuned to a resonant frequency substantially between 1 kHz and 100 kHz. The accelerometer is coupled to the structural part in a frequency range substantially from 0.1 MHz to 2 Mhz.