Effect of Bed and Side Roughness on Dispersion in Open Channels

Autor:	Mahraj K. Magazine, Santosh K. Pathak, Pramod K. Pande
Rok vydání:	1988
Předmět:	Materials science Field (physics) business.industry Mechanical Engineering Flow (psychology) Boundary (topology) Mechanics Surface finish Open-channel flow Optics Dispersion (optics) Data analysis business Water Science and Technology Civil and Structural Engineering Dimensionless quantity
Zdroj:	Journal of Hydraulic Engineering. 114:766-782
ISSN:	1943-7900 0733-9429
DOI:	10.1061/(asce)0733-9429(1988)114:7(766)
Popis:	Dispersion in open‐channel flow is significantly affected by boundary roughness. The analysis of data generated in the present experimental program shows that the dimensionless dispersion coefficient is a function of two interacting mechanisms, namely, resistance and blockage effect due to roughness elements. The dispersion characteristics of channels with rough beds are found to be analogous to those of channels with rough sides. The proposed parameter P, which incorporates the influence of resistance and blockage effect, yields a good correlation with the available dispersion data. The empirical model developed in the present study may be used to predict dispersion coefficients in straight laboratory and field channels.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f4089ac76b420a098e2c77e8068d00d https://doi.org/10.1061/(asce)0733-9429(1988)114:7(766) Zobrazit plný text záznamu