Give proper explanation for the selected option Select the TRUE response.With increasing flow rate the frtiction factor of a given pipe decreases for hydraulically fully rough turbulent flows.Ob. With increasing flow rate the friction factor of a given pipe increases for hydraulically fully rough turbulent flows.Oc. For hydraulically fully rough turbulent flows the friction factor is independent of the flow rate.What is a Neumann boundary condition?O a. A known flow (flux) across a boundary.O b. A fixed hydraulic head on the boundary.Oc A boundary with no hydraulic head.O d. A boundary where the hydraulic head is zero.In a steady state 2-dimensional finite difference groundwater modelling scheme with Ay = Ax what does the discretised solution to the Laplace equation for aparticular cell represent?O a. Fluxes of groundwater into and out of the cell.O b. The distribution of vertical gradients across the cell boundariesOc The average head distribution of the 4 neighbouring cellsO d. The change in groundwater storage.

For different types of flows the factors which are effecting the friction factor are different. As…

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Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.1P

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Give proper explanation for the selected option

Select the TRUE response.
With increasing flow rate the frtiction factor of a given pipe decreases for hydraulically fully rough turbulent flows.
Ob. With increasing flow rate the friction factor of a given pipe increases for hydraulically fully rough turbulent flows.
Oc. For hydraulically fully rough turbulent flows the friction factor is independent of the flow rate.
What is a Neumann boundary condition?
O a. A known flow (flux) across a boundary.
O b. A fixed hydraulic head on the boundary.
Oc A boundary with no hydraulic head.
O d. A boundary where the hydraulic head is zero.
In a steady state 2-dimensional finite difference groundwater modelling scheme with Ay = Ax what does the discretised solution to the Laplace equation for a
particular cell represent?
O a. Fluxes of groundwater into and out of the cell.
O b. The distribution of vertical gradients across the cell boundaries
Oc The average head distribution of the 4 neighbouring cells
O d. The change in groundwater storage.

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