使用Ansys CFX软件进行流场非对称性模拟, 可以通过设定非对称性边界条件来实现。具体的代码示例如下：

ANSYS CFX Command

!BOUNDARY CONDITIONS

INLETBD = BOUNDARY(FLOWRATE= Inlet_feed_flowrate,

PRESSURE = Inlet_feed_pressure,

TEMPERATURE = Inlet_feed_temperature,

COLDFLOW = ON,

HEAT TRANSFER COEFFICIENT =0.0,

MASS FRACTION = Inlet_feed_mass_fraction,

FLOW TANGENTIAL NONDIMENSIONAL =Inlet_feed_tangential_flow);

OUTLETBD = BOUNDARY(FLOWRATE= Outlet_feed_flowrate,

PRESSURE = Outlet_feed_pressure,

TEMPERATURE = Outlet_feed_temperature,

COLDFLOW = ON,

HEAT TRANSFER COEFFICIENT =0.0,

MASS FRACTION = Outlet_feed_mass_fraction,

FLOW TANGENTIAL NONDIMENSIONAL =Outlet_feed_tangential_flow);

!THE MESH AND SOLVER SETTINGS

MESH = CFX.MESH(FILE = Mesh_file);

SOLVER = CFX.SOLVER(

INITIAL TIMESTEP =Initialize_timestep,

MAXIMUM TIMESTEP =Max_timestep,

PRESSURE = Pressure_resid,

VELOCITY = Velocity_resid,

TEMPERATURE =Temperature_resid,

TURBULENCE = Turbulence_resid,

CONVERGENCE PARAMETERS =Convergence_parameters);

!ADD A NODE FOR SYMMETRY PLANE

SYMPLANE = NODE(X = 0, Y = 0, Z = 0);

!ADD A CONDITION TO DEFINE THE SYMMETRY PLANE

PLANE = BOUNDARY(

NAME = "Symmetry plane",

TYPE = SYMMETRY,

NODE = SYMPLANE,

OPERATION = REFLECTION)

SET BOUNDARY(PROPERTIES = INLETBD, TYPE = "INLET");

SET BOUNDARY(PROPERTIES = OUTLETBD, TYPE = "OUTLET");

SOLVE(NAME="Ansys CFX Flow UnSymmetrical");