The Experimental Study of EHD Printing for Different Nozzle Shapes
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متن کاملON OPTIMAL NOZZLE SHAPES OF GAS-DYNAMIC LASERS
Pontryagin's principle is used to study the shape of the supersonic part of the nozzle of a carbon dioxide gas-dynamic laser whose gain is maximal. The exact shape is obtained for the uncoupled approximation of Anderson's bimodal model. In this case, if sharp corners are allowed, the ceiling of the supersonic part consists of a slant rectangular sheet followed by a horizontal one; otherwise...
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In an axisymmetric CO2-N2-H2O gas dynamic laser, let ? denote the intersection of the vertical plane of symmetry with the upper part of the (supersonic) nozzle. To obtain a maximal small signal gain, some authors have tested several families of curves for ?. To find the most general solution for ?, an application of Pontryagin’s principle led to the conjuncture that the optimal ? must consist o...
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ژورنال
عنوان ژورنال: Journal of the Korean Society of Visualization
سال: 2011
ISSN: 1598-8430
DOI: 10.5407/jksv.2011.9.2.048