[ashtonJ]

Dear all,
I need to create the following expression in ANSYS CFX;

If Z < Z1, Y = 1.5 mm
If Z1=<Z<=Z2, Y= a*(Z-Z2)^2+c
If Z2<Z<Z3, Y = 0.75
If Z3=<Z<=Z4, Y= a*(Z-Z3)^2+c
If Z>Z4, Y = 1.5mm
I am familiar with if statement in CFX: If (cond_expr, true_expr, false_expre); however, I do not know how to define the above expression with 5 conditions. Any help is appreciated.

[Antanas]

Originally Posted by ashtonJ

Dear all,
I need to create the following expression in ANSYS CFX;

If Z < Z1, Y = 1.5 mm
If Z1=<Z<=Z2, Y= a*(Z-Z2)^2+c
If Z2<Z<Z3, Y = 0.75
If Z3=<Z<=Z4, Y= a*(Z-Z3)^2+c
If Z>Z4, Y = 1.5mm
I am familiar with if statement in CFX: If (cond_expr, true_expr, false_expre); however, I do not know how to define the above expression with 5 conditions. Any help is appreciated.

It will be nested IF like this: if(z>z4,1.5[mm],if(z>=z3,a*(Z-Z3)^2+c,if(z>z2,0.75,if(z>=z1,a*(Z-Z2)^2+c,1.5[mm]))))

[ashtonJ]

Thanks very much, Antanas.