discharge coefficient of weir

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  • Last Post 28 February 2019
kaushalbaghel posted this 25 February 2019

 i am simulating a flow over weir in open channel flow in ANSYS Fluent. i have designed a triangular labyrinth weir. i want to know if i can calculate coefficient of discharge of the designed weir and how can do it. please reply asap, i am preparing my final thesis for masters programme.

 

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rwoolhou posted this 25 February 2019

What values do you need from the solver? 

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kaushalbaghel posted this 27 February 2019

I have deisgned a  triangular labyrinth weir and simulated a water flow of velocity 1 m/s. I need to calculate coefficient of discharge of this weir. For than i need height of water flowing over the weir exactly at the crest of weir.

also i need discharge at downstream of the weir.

rwoolhou posted this 27 February 2019

OK, have a look for the various solutions on here to get the free surface height: you'll need to pick the correct position based on the weir design. 

As mass is conserved, won't the discharge be the same mass flow as you put into the system? 

kaushalbaghel posted this 28 February 2019

thank you sir for the solution. I will try and reply once i get the desired results.

 

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