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What is the difference about culvert hydraulics btw Hecras and HY-8

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ZAFIRR

ZAFIRR

Civil/Environmental
Joined
Jan 30, 2021
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I need to make calculations detaily in my work about culvert in both software. I try to show reasons of different result by determining different methods and calculations. Which steps are different in these programs(like friction loss equaiton etc.)
 
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Review the documentation of both and then you should be able to make a reasonable determination of the differences.
 
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Hi,
As can be seen from the photos all input is same but the results are are different. I can't understand the reason of this. ı also upload my input file both HY-8 and Hec-Ras as an attachment. Thanks for interest.
Hec-ras_input_ianufb.png

HEC-RAS_RESULT_j07sbr.png

hy-8_results_motsuw.png

hy-8_pl4mnj.png




 
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İs there anyone have idea? Thanks.
 
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Is the difference is too much or less than 5 or 10%? Because no two different softwares gives exactly same result. If the difference is high then we may have to do a research.
 
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ZAFIRR,

Have you attempted gbam's suggestion?
 
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