The Performance Characteristics of Geometrically Similar Bistable AmplifiersSource: Journal of Fluids Engineering:;1969:;volume( 091 ):;issue: 002::page 257Author:T. Sarpkaya
DOI: 10.1115/1.3571087Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The results of a comprehensive study of the comparative performance characteristics of geometrically similar vented and unvented bistable amplifiers, together with their actual dimensions, are presented. The Reynolds number in the tests ranged from 9,750 to 60,000, Mach number from 0.07 to 0.42, and the power jet velocity from 75 to 460 ft/sec. Each amplifier as conceived and designed was capable of giving a maximum of geometric flexibility which enabled a systematic evaluation of the shape and location of the splitter plate and Coanda-walls. It was found, within the range of Reynolds and Mach numbers tested, that certain gain characteristics and the range of operation of a given unvented amplifier overlap, within a narrow range of P0 /Ps and Q0 /Qs values, with the corresponding gain characteristics and the range of operation of the vented amplifier. It was also found that a convex-walled amplifier with proper geometry exhibits considerably better performance characteristics than are normally associated with such devices.
keyword(s): Performance characterization , Mach number , Plasticity , Dimensions , Reynolds number , Geometry AND Shapes ,
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| contributor author | T. Sarpkaya | |
| date accessioned | 2017-05-09T00:22:14Z | |
| date available | 2017-05-09T00:22:14Z | |
| date copyright | June, 1969 | |
| date issued | 1969 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-27332#257_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/134957 | |
| description abstract | The results of a comprehensive study of the comparative performance characteristics of geometrically similar vented and unvented bistable amplifiers, together with their actual dimensions, are presented. The Reynolds number in the tests ranged from 9,750 to 60,000, Mach number from 0.07 to 0.42, and the power jet velocity from 75 to 460 ft/sec. Each amplifier as conceived and designed was capable of giving a maximum of geometric flexibility which enabled a systematic evaluation of the shape and location of the splitter plate and Coanda-walls. It was found, within the range of Reynolds and Mach numbers tested, that certain gain characteristics and the range of operation of a given unvented amplifier overlap, within a narrow range of P0 /Ps and Q0 /Qs values, with the corresponding gain characteristics and the range of operation of the vented amplifier. It was also found that a convex-walled amplifier with proper geometry exhibits considerably better performance characteristics than are normally associated with such devices. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | The Performance Characteristics of Geometrically Similar Bistable Amplifiers | |
| type | Journal Paper | |
| journal volume | 91 | |
| journal issue | 2 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.3571087 | |
| journal fristpage | 257 | |
| journal lastpage | 262 | |
| identifier eissn | 1528-901X | |
| keywords | Performance characterization | |
| keywords | Mach number | |
| keywords | Plasticity | |
| keywords | Dimensions | |
| keywords | Reynolds number | |
| keywords | Geometry AND Shapes | |
| tree | Journal of Fluids Engineering:;1969:;volume( 091 ):;issue: 002 | |
| contenttype | Fulltext |