Gas Flow Through CracksSource: Journal of Fluids Engineering:;1978:;volume( 100 ):;issue: 004::page 453DOI: 10.1115/1.3448707Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Nitrogen flow through 13 idealized cracks has been measured and compared with theoretical predictions. Gas conditions covered upstream pressure and temperature ranges of between 10 and 50 bars and 277 and 295°K, respectively, exhausting to atmosphere. Hydraulic smooth, convergent and parallel cracks and rough parallel cracks were tested for depths varying from 6 to 810 μm. The effect of area change is adequately predicted from theory if a friction factor Reynolds number relationship is assumed. The remaining data are presented on the basis of a friction factor, Reynolds number, and hydraulic diameter/surface roughness parameter basis. Theoretical predictions are successful where roughness and flow are high enough for the results to be in the completely turbulent regimes. For the hydraulic smooth parallel cracks the flow is lower than predicted for laminar and turbulent flow and this discrepancy will be the subject for further investigations.
keyword(s): Gas flow , Fracture (Materials) , Surface roughness , Flow (Dynamics) , Friction , Turbulence , Reynolds number , Temperature , Pressure AND Nitrogen ,
|
Collections
Show full item record
| contributor author | B. L. Button | |
| contributor author | A. F. Grogan | |
| contributor author | T. C. Chivers | |
| contributor author | P. T. Manning | |
| date accessioned | 2017-05-08T23:05:00Z | |
| date available | 2017-05-08T23:05:00Z | |
| date copyright | December, 1978 | |
| date issued | 1978 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-26939#453_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/91140 | |
| description abstract | Nitrogen flow through 13 idealized cracks has been measured and compared with theoretical predictions. Gas conditions covered upstream pressure and temperature ranges of between 10 and 50 bars and 277 and 295°K, respectively, exhausting to atmosphere. Hydraulic smooth, convergent and parallel cracks and rough parallel cracks were tested for depths varying from 6 to 810 μm. The effect of area change is adequately predicted from theory if a friction factor Reynolds number relationship is assumed. The remaining data are presented on the basis of a friction factor, Reynolds number, and hydraulic diameter/surface roughness parameter basis. Theoretical predictions are successful where roughness and flow are high enough for the results to be in the completely turbulent regimes. For the hydraulic smooth parallel cracks the flow is lower than predicted for laminar and turbulent flow and this discrepancy will be the subject for further investigations. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Gas Flow Through Cracks | |
| type | Journal Paper | |
| journal volume | 100 | |
| journal issue | 4 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.3448707 | |
| journal fristpage | 453 | |
| journal lastpage | 458 | |
| identifier eissn | 1528-901X | |
| keywords | Gas flow | |
| keywords | Fracture (Materials) | |
| keywords | Surface roughness | |
| keywords | Flow (Dynamics) | |
| keywords | Friction | |
| keywords | Turbulence | |
| keywords | Reynolds number | |
| keywords | Temperature | |
| keywords | Pressure AND Nitrogen | |
| tree | Journal of Fluids Engineering:;1978:;volume( 100 ):;issue: 004 | |
| contenttype | Fulltext |