[jiliyur]

hi everybody when i run my simulation l meet this error whats that mean? please help me thanks


reading inputs.in data from file inputs.in
reading engine.in data from file engine.in
reading amr.in data from file amr.in
turb_flag = 1 in inputs.in, reading in turbulence.in
reading turbulence.in data from file turbulence.in
reading mech.dat data from file mech.dat
reading species.in data from file species.in
trying to read in therm.dat... reading
there are 52 reactions and 29 species
reading initialize.in data from file initialize.in
reading spray.in data from file spray.in
reading gas.dat data from file gas.dat
reading liquid.dat data from file liquid.dat
reading boundary.in data from file boundary.in
generating a piston profile from the inputs in engine.in
reading post.in data from file post.in
reading surface.dat data from file surface.dat
error....geometries with rotational periodicity must have the z axis as the rotational axis and be symmetric about the x axis