Results 241 to 250 of about 278,459 (312)
Physics-informed neural network with weighted loss and hard constraints for hyperbolic conservation laws. [PDF]
Sci RepGhoreishi MS, Naderan H.
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Enhancing tensile strength of 3D-printed wood-PLA composites via a particle swarm optimization framework. [PDF]
PLoS OneBhattacharjee B +7 more
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Additive Manufacturing of Nanoscale Multimaterial Voxels Via Meniscus-Confined Electrodeposition. [PDF]
ACS NanoSprengel S +12 more
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Journal of Propulsion and Power, 1998
Several nozzle concepts that promise a gain in performance over existing conventional nozzles are discussed in this paper. It is shown that signie cant performance gains result from the adaptation of the exhaust e ow to the ambient pressure. Special attention is then given to altitude-adaptive nozzle concepts, which have recently received new interest ...
Hagemann, G. +3 more
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Several nozzle concepts that promise a gain in performance over existing conventional nozzles are discussed in this paper. It is shown that signie cant performance gains result from the adaptation of the exhaust e ow to the ambient pressure. Special attention is then given to altitude-adaptive nozzle concepts, which have recently received new interest ...
Hagemann, G. +3 more
openaire +3 more sources
Nozzles: Nozzle-less Devices Defined
Journal of the American Rocket Society, 1945This is a complicated, but exact way of saying that any channel (converge n t divergent, straight or convergentdivergent) through which fluids expand to convert their heat or pressure energy into velocity in a given direction is a nozzle. Since the mass of gas is given a velocity at the expense of its heat or pressure energy, it is seen that the heat ...
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AIAA Journal, 2002
A polytropic analytical equation system for the internal e ow of nozzles and ducts has been developed by a solution to the combined friction/area change compressible e ow equations. Validation of the system is sought through comparison with experimental data and numerical simulations using FLUENT in the prediction of the performances of two ...
E. A. Wilson, D. Adler, P. Bar-Yoseph
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A polytropic analytical equation system for the internal e ow of nozzles and ducts has been developed by a solution to the combined friction/area change compressible e ow equations. Validation of the system is sought through comparison with experimental data and numerical simulations using FLUENT in the prediction of the performances of two ...
E. A. Wilson, D. Adler, P. Bar-Yoseph
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Flow phenomena in advanced rocket nozzles - The plug nozzle
34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998In recent years, plug nozzles have gained a renewed interest in space business. In principle, this nozzle concept offers a continuous altitude adaptation up to its design pressure ratio. But, the flow adaptation achieved with this advanced rocket nozzle concept induces shocks and expansion waves resulting in exit profiles far away from idealized one ...
Hagemann, G., Immich, H., Terhardt, M.
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