Hec RAS Steady Flow Analysis (Tutorial 1)

HEC-RAS is a one-dimensional steady flow hydraulic model designed to aid hydraulic engineers in channel flow analysis and floodplain determination. The results of the model can be applied in floodplain management and flood insurance studies. If you recall from hydraulics, steady flow describes conditions in which depth and velocity at a given channel location do not change with time. Gradually varied flow is characterized by minor changes in water depth and velocity from cross-section to cross-section. The primary procedure used by HEC-RAS to compute water surface profiles assumes a steady, gradually varied flow scenario, and is called the direct step method.
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[@tewekelmelesegemechu]

Reaaly, I appreciated your assistance ! Thank you! it is very interesting and helpful , keep going to teach and shares your knowledge !

[@habtamutamiru3618]

Great Dave! the dream of man!

[@hydraulicsandhydrologytutorial]

M tnx bro!

[@tewekelmelesegemechu]

Great! Good lecture!

[@solomonasregdew4793]

cool

[@aarizahmed2422]

It's Great! I have some queries are as follows : 1) I have a side slope, Bed slope, bed width and full supply depth of trapezoidal canal of 200 km (data available for let say 30km,80,120 and 200km). 2 )How can we calculate the station and elevation for each reach?

[@hydraulicsandhydrologytutorial]

Use bed slope and 200km length of the canal.

[@jeromemensah194]

Hello, could you kindly help me out with how to get the flow rate (pf) values. I can't seem to get how its gotten or calculated . Would appreciate if you replied me Sir.

[@aryandhansyan]

how to get flow rate (pf) value? I am working on a glacier lake in Himachal Pradesh, India. How to get its pf value? please help

[@sundarpaudel4449]

Could you please tell me, why the rating curve is not curvilinear rather than straight?

[@hydraulicsandhydrologytutorial]

It depends on channel dimension irregular channel dimension might not be straight

[@amritsharma8098]

How to calculate downstream slope of river

[@rohi7597]

For energy slope take average slope value of last 2 downstream cross section