Help please！the problem in simulation of railway train passing a tunnel
 

hi，guys！I am useing sliding mesh to simulate the relative motion between the trian and tunnel.it is easy to converge,but the result is beyond my imaging，and wrong.attached is the fluent model and result contour.Any suggesiton or advice is appreciated.

Hi Shiren,
Please post more details of your problem like the train speed, type of mesh and other details about the domain (model details).
Why are you using sliding mesh ?
Raashid

Thanks ,Raashid.The velocity is 350km per hour.The attached are pictures of local mesh aroun the nose shape，and boundary set.If more information is needed,please feel free to email to shiren77@gmail.com.

Raashid,sorry to forget you question.I think sliding mesh takes less time than dynamic mesh.you know，I am doing research on nose shape optimization，which need lots of analysis，so I prefer sliding mesh.

Have a look at this:

http://www.youtube.com/user/XFlowCFD

It seems to be really cool :-)

Its really cool.But I have no money to buy it.Thank you all the same.

train moving in tunnel help
 

hello
i am working on train moving in tunnel. i am getting floating error:invalid number. can any one help me. my email is sheikhnasir39@gmail.com
plz help me
thanks:confused: