Creation of large size geometries
 

Hello,

I want to create a large size geometry, such as 1000m lengthier road tunnel,
Will u suggest me what will be the better option? Either to create a 1000m mesh geometry or to work on model prototype. Also I want to use vehicle simulation and fan simulation inside the tunnel. & Can you tell me how to learn the merging of meshes, or creation of meshes inside the large size created meshes?

waiting for reply asap..

thanking you!