| contributor author | Yan, Han | |
| contributor author | Zhang, Wen | |
| contributor author | Peng, Zhi | |
| contributor author | Meng, Guang | |
| date accessioned | 2017-05-09T01:18:57Z | |
| date available | 2017-05-09T01:18:57Z | |
| date issued | 2015 | |
| identifier issn | 0098-2202 | |
| identifier other | fe_137_05_051202.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/158250 | |
| description abstract | The gas flow characteristics in rectangular cross section converging–diverging micronozzles incorporating the effect of threedimensional (3D) rough surface topography are investigated. The fractal geometry is utilized to describe the multiscale selfaffine roughness. A firstorder slip model suitable for rough walls is adopted to characterize the slip velocities. The flow field in micronozzles is analyzed by solving 3D Navier–Stokes (N–S) equation. The results show that the dependence of mass flow rate on the pressure difference has a good agreement with the reported results. The presence of surface topography obviously perturbs the gas flow near the wall. Moreover, as the surface roughness height increases, this perturbation induces the supersonic “multiwaves†phenomenon in the divergent region, in which the Mach number fluctuates. In addition, the effect of 3D surface topography on performance is also investigated. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Effect of Three Dimensional Surface Topography on Gas Flow in Rough Micronozzles | |
| type | Journal Paper | |
| journal volume | 137 | |
| journal issue | 5 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.4029630 | |
| journal fristpage | 51202 | |
| journal lastpage | 51202 | |
| identifier eissn | 1528-901X | |
| tree | Journal of Fluids Engineering:;2015:;volume( 137 ):;issue: 005 | |
| contenttype | Fulltext | |