# Tag Info

Accepted

### Ideal funnel design for powders

The problem you have is more complicated than you think. Any industry that deals with the storage and movement of granulated/powdered materials has to deal with this and most have unique solutions. ...
• 9,637
Accepted

### How to make sure a pipe does not take all of the water from a stream?

You can put a valve on your pipe to control the flow. Or partition the stream by means of a short concrete wall which looks like an indented grout trowel upside-down . Say two opening for the stream ...
• 22.4k
Accepted

### Where exactly will a hydraulic jump occur?

First a hydraulic jump is where fluid will transition from supercritical (having a Froude Number greater than one, to subcritical (having a Froude Number less than one). When the Froude number is near ...
• 1,335

### Why is pressure head ignored in open channel flow?

Because head pressure is the weight of the water standing on top of the region being measured. Even though you can visualize an open channel as a slope you will not see a difference in pressure if you ...
• 452

### Open Channel Flow with no slope

My open channel hydraulics are a little rusty having ended up in project management for a few years. Assuming sub-critical flow, i.e. the Froude number is less than 1. This is reasonable unless the ...

### Water Pump Thrust Calculation

This is enough information to determine thrust provided you know the actual value of output diameter Dout because it is the only given distance measure. Cross sectional area m^2 = Pi * (Dout m / 2)^2 ...

### How does decreasing the cross-sectional width of a channel impact steady flow?

If it is a steady state flow, the pressure difference which drives the flowrate will be the same as the pressure loss due to friction and turbulence. For the open channel, you will need to use ...
• 1,140
1 vote

### How can I size a sump area to act as an energy dissipator?

I suspect the sump will fill up and be ineffective when the water levels with the flow. Usually, they use an open channel shoot with a stepped ending to break the flow of the stream of water and by ...
• 22.4k
1 vote

### Turbulent boundary layer development in channel flow

There is a validation case for turbulent flow in a two-dimensional channel at NASA's Langley Research Center Turbulence Modeling Resource website. You will also find results for many turbulence models ...
• 2,150
1 vote

### determine if the flow is laminar or turbulent

The wall material does not effect the nature of the flow. The only material effect on flow will be roughness; but smooth steel is indistinguishable from smooth glass or anything else smooth making up ...
1 vote
Accepted

### The mechanism of submerged hydraulic jump

In open channels when the location of supercritical flow and hydraulic jump are very close, or restriction in down stream encourages higher elevation, submerged or partially submerged hydraulic jump ...
• 22.4k
1 vote

### Open Channel flow with pressure losses - flow depth?

If the channel is horizontal, the flow will set a slope to use the head lost as a potential energy to turn it to kinetic energy that is required to overcome the head loss at the bends and also the ...
• 22.4k
1 vote

### Difference in flow measurements in an open channel

I'm not sure I totally understand your question, but I give a try. You have an actual situation and a calculation (model or analytic formula). The calculation resulted in a gate height for the ...
• 111
1 vote

### How to model subcritical open channel flow?

What software are you using? If you're just calculating this in a spreadsheet, "Flow in Open Channels" by Subramanya (2009) provides a mathematical treatment of side-weirs which you may find helpful (...

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