thanks Mickaël,
I will do the simulation with you.xml file, and i will tell you about the result.
2D turbulent channel flow: pb with TKE results
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Re: 2D turbulent channel flow: pb with TKE results
please why you take ref velocity=79.2m/s?
Re: 2D turbulent channel flow: pb with TKE results
Hello Mickaël,
I do my simulation with your .xml file, then I compare k+=f(y+) for saturne simulation and DNS, BUT this time the TKE is very high! you can see that in the attached doc.
I do my simulation with your .xml file, then I compare k+=f(y+) for saturne simulation and DNS, BUT this time the TKE is very high! you can see that in the attached doc.
- Attachments
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- saturne2_DNS.doc
- (144 KiB) Downloaded 147 times
Re: 2D turbulent channel flow: pb with TKE results
Gina,
The velocity i set up allows to have turbulent Reynolds = 590. And if compute k+=f(y+), my maximum value of k+ is about 3.5 because my max k is 8.78 J and turbulent friction velocity uk = 1.60m/s. Do you agree with me?
Mickaël
The velocity i set up allows to have turbulent Reynolds = 590. And if compute k+=f(y+), my maximum value of k+ is about 3.5 because my max k is 8.78 J and turbulent friction velocity uk = 1.60m/s. Do you agree with me?
Mickaël
Re: 2D turbulent channel flow: pb with TKE results
Hi Mickaël,
with the .xml file that you send me, I found the maximum k=38.609639!!!
with the .xml file that you send me, I found the maximum k=38.609639!!!
Re: 2D turbulent channel flow: pb with TKE results
Is k turbulent kinetic energy in your case? If yes, check your listing file at the last time step, you should have the value of turbulent kinetic energy printed. What's the value you read, please? And for my own curiosity, how do you get k=38.609639? Maybe we are not talking about the same thing so i need it to be clear to help you.:-)
Re: 2D turbulent channel flow: pb with TKE results
Thanks Mickaël,
yes i have take turbulent kinetic energy in my case, and to obtaind it, in GUI saturne profile I choose the position of x1=100 to x2=100
y1=0 to y2=1
z1=0 to z2=0
and i take turbulent energy
when the simulation is finish, i obtened the data of k=f(y)
then, i calcultate k+=k/(u_tau*u_tau)
y+=y*u_tau/viscosity
yes i have take turbulent kinetic energy in my case, and to obtaind it, in GUI saturne profile I choose the position of x1=100 to x2=100
y1=0 to y2=1
z1=0 to z2=0
and i take turbulent energy
when the simulation is finish, i obtened the data of k=f(y)
then, i calcultate k+=k/(u_tau*u_tau)
y+=y*u_tau/viscosity
Re: 2D turbulent channel flow: pb with TKE results
you can find as attached, the xml file which i have run, you can run it as it is to check my results.
and you find also the TKE file which i obtained in (tmp_Saturne) folder.
to calculate k+ and y+, I take u_tau=1,00005 m/s and viscosity=0.001695
how do you have k=8.78? where you obtains it?
have you plot k+=f(y+)?
thank you to light me
and you find also the TKE file which i obtained in (tmp_Saturne) folder.
to calculate k+ and y+, I take u_tau=1,00005 m/s and viscosity=0.001695
how do you have k=8.78? where you obtains it?
have you plot k+=f(y+)?
thank you to light me
- Attachments
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- TKE.dat
- (3.7 KiB) Downloaded 151 times
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- helf_channel_M.xml
- (7.15 KiB) Downloaded 152 times
Re: 2D turbulent channel flow: pb with TKE results
Gina,
could you send me your listing file, please?
Mickaël
could you send me your listing file, please?
Mickaël
Re: 2D turbulent channel flow: pb with TKE results
Are you sure to use my xml file?
By the way, could you run Code_Saturne in debug mode, please?
By the way, could you run Code_Saturne in debug mode, please?