how to develop axisymmetric model
 

Hi all i want to know how to develop axisymmetric model in phoenics? Generally we draw 2D model and we define axis about which it is symmteric.But in phoenics no such option is there.In phoenics we have to take a sector.In axissymetric problem , gradient of solved for variable (pressure,temperature,velocity...) in circumferential direction ( x direction in phoenics) is zero. how to impose these boundary condition in phoenics?

thanks in advance manish kadam