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| Content Provider | Springer Nature Link |
|---|---|
| Author | Jang, Jin Sung Oh, Seok Hawn Roh, Tae Seong |
| Copyright Year | 2014 |
| Abstract | Interior ballistics are completed in tens of milliseconds, as are all gun-firing phenomena. Thus, some data cannot be measured directly through experimentation. Therefore, such complex gun-firing phenomena are traditionally clarified by numerical analysis. In the twophase flow of interior ballistics, interphase drag has a strong effect on propellant particle movement. This drag is a momentum sink in the gas phase and a corresponding source of momentum for the solid phase. Previous studies have calculated the drag force on the propellant particles using Ergun’s empirical equation, which was developed for a dense bed and relates the drag to the pressure drop through porous media. However, the particulate bed is fluidized in the course of the cycle of interior ballistics, thus indicating that the flow field is transient with regions of high Reynolds number beyond the range of experimental data. The Ergun equation is examined through a compensation study and calibrated based on the Reynolds number using the numerical method. Moreover, the influence of different drag models on flow behavior and propellant movement in interior ballistics is analyzed. |
| Starting Page | 4547 |
| Ending Page | 4553 |
| Page Count | 7 |
| File Format | |
| ISSN | 1738494X |
| Journal | Journal of Mechanical Science and Technology |
| Volume Number | 28 |
| Issue Number | 11 |
| e-ISSN | 19763824 |
| Language | English |
| Publisher | Korean Society of Mechanical Engineers |
| Publisher Date | 2015-01-22 |
| Publisher Place | Seoul |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Interior ballistics Granular propellant Interphase drag Ergun Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mechanics of Materials Mechanical Engineering |
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