A hydraulic jump stilling basin, equipped with baffle blocks, is to be tested in laboratory to determine the dissipation characteristics for various flow rates. The maximum prototype discharge will be 220m /s and the rectangular channel will be 10 m wide. (Assume the channel bed to be horizontal and concrete lined, i.e. smooth.) A 40:1 scale model of the stilling basin is to be built. Discharges ranging between the maximum flow rate and 10% of the maximum flow rate are to be reproduced in the model. 1. What similitude should be used? (Justify your selection.) 2. Determine the maximum model discharge required. 3. Determine the minimum prototype discharge for which negligible scale effects occur in the model. (Comment on your result.) For one particular inflow condition, the laboratory flow conditions are upstream flow depth of 0.019 m, upstream flow velocity of 2.38 m/s and downstream flow depth of 0.122 m

A hydraulic jump stilling basin, equipped with baffle blocks, is to be tested in laboratory to determine the dissipation characteristics for various flow rates. The maximum prototype discharge will be 220m /s and the rectangular channel will be 10 m wide. (Assume the channel bed to be horizontal and concrete lined, i.e. smooth.) A 40:1 scale model of the stilling basin is to be built. Discharges ranging between the maximum flow rate and 10% of the maximum flow rate are to be reproduced in the model. 1. What similitude should be used? (Justify your selection.) 2. Determine the maximum model discharge required. 3. Determine the minimum prototype discharge for which negligible scale effects occur in the model. (Comment on your result.) For one particular inflow condition, the laboratory flow conditions are upstream flow depth of 0.019 m, upstream flow velocity of 2.38 m/s and downstream flow depth of 0.122 m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Sediment transport

Sediment transport or Soil transport is the movement of solid particles, usually due to the combination of gravitational forces acting on the sediment, and the movement of the liquid at which the sediment enters. Soil erosion occurs in natural systems where the particles are sandstones (sand, rocks), mud, or clay; the liquid is air, water, or ice; and the gravitational force that works to move particles to the landing surface. Sediment transportation or soil migration due to the movement of liquids occurs in rivers, lakes, lakes, oceans, and other bodies of water as a result of currents and waves. Transportation is also caused by glaciers as they flow, and to places on earth under the influence of wind. Soil erosion due to gravity alone is possible in most sloping areas, including hills, scarves, cliffs, and the continental shelf — the continental boundary of the slope.

Question

A hydraulic jump stilling basin, equipped with baffle blocks, is to be tested in
laboratory to determine the dissipation characteristics for various flow rates. The maximum
prototype discharge will be 220m/s and the rectangular channel will be 10 m wide. (Assume
the channel bed to be horizontal and concrete lined, i.e. smooth.) A 40:1 scale model of the
stilling basin is to be built. Discharges ranging between the maximum flow rate and 10% of the
maximum flow rate are to be reproduced in the model.
1. What similitude should be used? (Justify your selection.)
2. Determine the maximum model discharge required.
3. Determine the minimum prototype discharge for which negligible scale effects occur in
the model. (Comment on your result.) For one particular inflow condition, the laboratory
flow conditions are upstream flow depth of 0.019 m, upstream flow velocity of 2.38 m/s
and downstream flow depth of 0.122 m
4. Compute the model force exerted on the baffle blocks. (State the basic principle(s)
involved.)

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Q. A hydraulic jump stilling basin, equipped with baffle blocks, is to be tested in laboratory to determine the dissipation characteristics for various flow rates. The maximum prototype discharge will be 220m3/s and the rectangular channel will be 10 m wide. (Assume the channel bed to be horizontal and concrete lined, i.e. smooth.) A 40:1 scale model of the stilling basin is to be built. Discharges ranging between the maximum flow rate and 10% of themaximum flow rate are to be reproduced in the model. 1. What similitude should be used? (Justify your selection.)2. Determine the maximum model discharge required.3. Determine the minimum prototype discharge for which negligible scale effects occur in the model. (Comment on your result.) For one particular inflow condition, the laboratory flow conditions are upstream flow depth of 0.019 m, upstream flow velocity of 2.38 m/s and downstream flow depth of 0.122 m.4. Compute the model force exerted on the baffle blocks. (State the basic…
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