TY - JOUR
ID - 3571
TI - Theoretical and experimental investigation of density jump on an inclined surface
JO - Scientia Iranica
JA - SCI
LA - en
SN - 1026-3098
AU - NAJAFPOUR, NATEGHEH
AU - SAMIE, MILAD
AU - FIROOZABADI, BAHAR
AU - AFSHIN, HOSSEIN
AD - School of Mechanical Engineering, Sharif University of Technology, Tehran, Iranâ€Ž
Y1 - 2014
PY - 2014
VL - 21
IS - 5
SP - 1655
EP - 1665
KW - density jump
KW - inclined surface
KW - analytical and experimental investigation
KW - integral method
KW - critical densimetric Froude number
DO -
N2 - The density jump on an inclined surface is analyzed using integral method by applying mass and momentum conservation equations. The jump occurs in a two-layered fluid flow, in which the upper layer is stagnant and very deep. A relation is derived which gives the conjugate depth ratio as a function of inlet densimetricFroude number, inlet concentration ratio, bed slope, and entrainment. A set of experiments are performed to verify the relation. The theory and the measurements are in good agreement. The analysis reveals that increasing the surface inclination results in a decrease in the conjugate depth ratio. This analysis also shows that the densimetric Froude number just after the jump is a function of the inlet densimetric Froude number and surface inclination and not inlet concentration. The model predicts a critical Froude number of 1.12 for horizontal internal hydraulic jumps in salt-water density flows. It also reveals that the critical Froude number for internal hydraulic jumps in salt-water density flows increases with surface inclination and decreases with inlet concentration of the flow.
UR - http://scientiairanica.sharif.edu/article_3571.html
L1 - http://scientiairanica.sharif.edu/article_3571_813d5160f1c7d9e55ce7a43cd7ec5834.pdf
ER -