Investigation of Nano Nozzle Flows using Direct Simulation Monte Carlo
سال
: 2015
چکیده: The aim of the current work is to simulate nanonozzle flows using Simplified Bernoulli-Trials collision algorithm in the dsmcfoamstrath solver of OpenFoam. In this test, the inlet Knudsen number, pressure ratio and wall temperature are about 7.781×10-6, 10 and 300 K, respectively. The phenomenon which we observed in nanonozzles is the prevention of formation of supersonic flows in these scales while this behavior does not happen in micronozzles. The reason can be the boundary layer growth due to scale reduction, so that flow is unable to choke. It leads to produce a lower thrust compared to the larger scales. In addition, temperature gradients are smaller than what we observed in micro nozzles.
کلیدواژه(گان): DSMC,rarefied flow,nano nozzle
کالکشن
:
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آمار بازدید
Investigation of Nano Nozzle Flows using Direct Simulation Monte Carlo
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| contributor author | سید علی سعادتی | en |
| contributor author | احسان روحی گل خطمی | en |
| contributor author | Seyed Ali Saadati | fa |
| contributor author | Ehsan Roohi | fa |
| date accessioned | 2020-06-06T14:17:42Z | |
| date available | 2020-06-06T14:17:42Z | |
| date copyright | 3/8/2015 | |
| date issued | 2015 | |
| identifier uri | https://libsearch.um.ac.ir:443/fum/handle/fum/3390520?locale-attribute=fa | |
| description abstract | The aim of the current work is to simulate nanonozzle flows using Simplified Bernoulli-Trials collision algorithm in the dsmcfoamstrath solver of OpenFoam. In this test, the inlet Knudsen number, pressure ratio and wall temperature are about 7.781×10-6, 10 and 300 K, respectively. The phenomenon which we observed in nanonozzles is the prevention of formation of supersonic flows in these scales while this behavior does not happen in micronozzles. The reason can be the boundary layer growth due to scale reduction, so that flow is unable to choke. It leads to produce a lower thrust compared to the larger scales. In addition, temperature gradients are smaller than what we observed in micro nozzles. | en |
| language | English | |
| title | Investigation of Nano Nozzle Flows using Direct Simulation Monte Carlo | en |
| type | Conference Paper | |
| contenttype | External Fulltext | |
| subject keywords | DSMC | en |
| subject keywords | rarefied flow | en |
| subject keywords | nano nozzle | en |
| identifier link | https://profdoc.um.ac.ir/paper-abstract-1046975.html | |
| conference title | Asian Nanoforum conference | en |
| conference location | جزیره کیش | fa |
| identifier articleid | 1046975 |