Numerical simulation of laminar water hammer flow in a pipe with varying cross-section
| Autor: | Charles Dalton, Pranab N. Jha, Jianfeng Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
Water hammer Computer simulation business.industry Numerical analysis Attenuation 0208 environmental biotechnology Flow (psychology) Laminar flow 02 engineering and technology Structural engineering Mechanics 01 natural sciences 010305 fluids & plasmas 020801 environmental engineering Cross section (physics) Closure (computer programming) 0103 physical sciences business Water Science and Technology |
| Zdroj: | Journal of Applied Water Engineering and Research. 6:228-235 |
| ISSN: | 2324-9676 |
| DOI: | 10.1080/23249676.2017.1287016 |
| Popis: | Numerical simulation of water hammer effect in a pipe with varying cross-section is presented for an initial laminar flow by solving Navier–Stokes equations in time, using Ansys Fluent software. Results for pressure variation with time are compared to available literature to validate the numerical method. The pressure signal is presented at various locations in the pipe and compared with existing studies qualitatively. Pressure and velocity profiles are shown at various times during the pressure wave along the length of the domain, which indicates fluctuation of these variables as the wave passes through the changing geometry. Attenuation of the pressure amplitude was found to be slower in the current geometry compared with experimental results from the literature due to a more gradual change in cross-sectional area. The pressure wave generated by valve closure and its interaction with the geometry is discussed in detail and comparisons are made with existing literature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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