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If Conditional Expression with Multiple Conditions

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Old   April 6, 2014, 21:27
Question If Conditional Expression with Multiple Conditions
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Ashkan Javadzadegan
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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.
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Old   April 6, 2014, 22:43
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Quote:
Originally Posted by ashtonJ View Post
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]))))
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Old   April 6, 2014, 22:45
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Ashkan Javadzadegan
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Thanks very much, Antanas.
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