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UDS gradient

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Old   December 14, 2004, 11:24
Default UDS gradient
  #1
Giordano Bruno
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Hi to all fluent users,

I'm working with FLUENT 6.020 and I've to define two UDSs, but when I try to use the function C_UDSI_G(c,t, i)I obtain, as usual..., an error message.

Any suggestion will be appreciated!!!

Thanks in advance.

Giordano Bruno
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Old   December 14, 2004, 12:34
Default Re: UDS gradient
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S. Hollman
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If you are referring to a runtime error when using your adjust function that contains the C_UDSI_G(c,t) command, you have to run one iteration with the hook function turned off.

Why? I do not know.
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Old   December 15, 2004, 04:25
Default Re: UDS gradient
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Giordano Bruno
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Thank you very much!!!

I'm going to try your suggestion...

Giordano Bruno
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Old   December 17, 2004, 10:46
Default Re: UDS gradient
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Joey
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Doctor Caojing told me that before iteration no memory for the gradient is allocated, so before you call the gradient of any uds or other variable, you need to run one iteration.
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Old   December 17, 2004, 17:32
Default Re: UDS gradient
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Giordano Bruno
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Thank you very much for your useful responses.

Giordano Bruno
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