Numerical modelling of supercritical flow in circular conduit bends using SPH method
| Autor: | Radomir Kapor, Dejana Đorđević, Ljubodrag Savić, Nikola Rosić, Milena Kolarevic |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Mechanical Engineering
0208 environmental biotechnology artificial viscosity Boundary (topology) 02 engineering and technology Mechanics Condensed Matter Physics Supercritical flow 6. Clean water 020801 environmental engineering Physics::Fluid Dynamics Electrical conduit Viscosity coefficient Mechanics of Materials Modeling and Simulation super critical bend flow helical flow Physics::Accelerator Physics Particle Smoothed-particle hydrodynamics (SPH) Sensitivity (control systems) Helical flow Geology |
| Zdroj: | Journal of Hydrodynamics |
| ISSN: | 1878-0342 1001-6058 |
| DOI: | 10.1016/s1001-6058(16)60744-8 |
| Popis: | The capability of the smoothed-particle hydrodynamics (SPH) method to model supercritical flow in circular pipe bends is considered. The standard SPH method, which makes use of dynamic boundary particles (DBP), is supplemented with the original algorithm for the treatment of open boundaries. The method is assessed through a comparison with measured free-surface profiles in a pipe bend, and already proposed regression curves for estimation of the flow-type in a pipe bend. The sensitivity of the model to different parameters is also evaluated. It is shown that an adequate choice of the artificial viscosity coefficient and the initial particle spacing can lead to correct presentation of the flow-type in a bend. Due to easiness of its implementation, the SPH method can be efficiently used in the design of circular conduits with supercritical flow in a bend, such as tunnel spillways, and bottom outlets of dams, or storm sewers. Rad se nalazi na internet stranici časopisa: https://www.sciencedirect.com/journal/journal-of-hydrodynamics-ser-b/vol/29/issue/2 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect