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UDF for time stepping

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Old   September 25, 2006, 09:41
Default UDF for time stepping
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I should impose variable time stepping that would works like follow:

if(flow_time <= 0.15) {

(timestep = 0.001); } else if(flow_time > 0.15 && flow_time <= 0.3) {

(timestep = 0.0005); }

but I do not know which is the correct way to do that using DEFINE(I have used UDF for velocity inlet and pressure but never for time stepping) thank you in advance
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