| Titre : | Adoption of Manning's equation to 1D non-Darcy flow problems (2012) |
| Auteurs : | Mohammad Sedghi-Asl, Auteur ; Hassan Rahimi, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Journal of hydraulic research (Vol. 49 N° 6, Novembre/Décembre 2011) |
| Article en page(s) : | pp. 814-817 |
| Note générale : | Hydraulique |
| Langues : | Anglais |
| Index. décimale : | 627 (Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques) |
| Tags : | Friction factor Manning's equation Non-Darcy flow Porous media Rockfill materials |
| Résumé : |
In this paper, the concept of Darcy–Weisbach's friction loss in pipe flows is employed and combined with Manning's widely used formula in open-channel flow problems to obtain a new relation for flow in porous rockfill media. A new formula to determine Manning's roughness coefficient of rockfill materials is presented based on the flow and grain characteristics and validated using new experimental data. The results confirm the applicability of Manning's formula for the hydraulically rough regime.
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| DEWEY : | 627 |
| ISSN : | 0022-1686 |
| En ligne : | http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.629911 |
