Introduction of New Flow Resistance Parameter for the Study Coefficients of Vertical Velocity Distribution

Auteurs-es

  • Harinarayan Tiwari
  • Nayan Sharma

Mots-clés :

Acoustic Doppler Velocimeter, Alluvial channel, Hari’s number, log-law distribution, Numerical coefficient

Résumé

Validity of log-law distribution of velocity in vertical section for alluvial channel under different localized bed and flow conditions is studied in this paper. In this study a new dimensionless parameter, Hari’s Number (Ph), whose value is to be taken as Q/νh, is proposed to relate the same with numerical coefficients of log-law distribution. It was found that the values of numerical coefficients could satisfactorily be correlated to the proposed indicators Ph. Value of Y (additive numerical coefficient) increases with increase in value of Ph. At lower discharge and lower depth, the value of coefficient of determination is seen to decline, inferring that for lower Ph values, the velocity distribution is more random.

Biographie de l'auteur-e

  • Harinarayan Tiwari
    Water Resources Development and Management , Research Scholar, IIT Roorkee

Publié

2013-09-24

Numéro

Rubrique

Review Articles