Creating a time variant velocity formula for a inlet

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1

for this, i need to add a variant velocity like starting from 0 and gradually increase up to 100 kmh-1 within 5 minutes time. can someone help me with the setting up the settings?

2

Hey @damiduz,
i think you need a csv file like this, or you use a linear funktion ?

tesz
tesz616×652 39.2 KB

Greetz Kai

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3

Thanks for your input @Kai_himself!! :slight_smile:

He is right @damiduz, you can either use a CSV table upload or define a function (f(t,x,…)) to prescribe time dependent BC. Let us know if you have any further questions!

Enjoy your weekend!

Jousef

4

how can i create a CSV file ?

5

Hi @damiduz,

You can do so in Microsoft Excel. Make sure to save the file as CSV.

Cheers.

Regards,
Barry

6

i am going to run this for 4000 itterations. do i have to define all 4000 one by one.

7

Hi @damiduz,

According to what I see in @Kai_himself’s post, yes it does seem like so. Excel has functions which will help with making this job easy so it shouldn’t be too much of a hassle.

Cheers.

Regards,
Barry

8

what it the function ?

9

I think a linear funktion y=mx+b, (1/3)(x*t),x=1 so you got a linear funktion from 0 to 100kmh in 300 seconds (5 min)

Greetz Kai