求助

mingzhebian

我在画圆桶形结构的时候，要了他的横截面左边是inlet,右边是outlet.上面是wall,下面是axis,但是要存的时候总是出现错误提示，像下面一样
WARN:a physics entity labeled wall already exists and thus the input labelcannot be used
a default (unspecified)doundary entity was created
ERROR:Continuum or boundary condition specified on entity edge 3 is invalid for fluent 6
ERROR:Continuum or boundary condition specified on entity edge 2 is invalid for fluent 6
ERROR:Continuum or boundary condition specified on entity edge 1 is invalid for fluent 6
ERROR:Continuum or boundary condition specified on entity edge 4 is invalid for fluent 6
请高手指教