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Help Please ! Eulerian Model-----Drag Coefficient

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Old   March 13, 2004, 13:12
Default Help Please ! Eulerian Model-----Drag Coefficient
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I am using Eulerian Model for multiphase flow. In the model, the drag coefficient is 1.0. And I defined the UDF of Drag coefficient as follows:

#include "udf.h"

DEFINE_EXCHANGE_PROPERTY(drag, cell, x_thread, s, f) { Cd = 1.0; return Cd; }

When the UDF is interpreted, Fluent says "Cd" is an undeclared variable. Even if I declare Cd is a real later, Fluent still showed me the same message.

Could someone help me?

Thank you.
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