- **Fluent UDF and Scheme Programming**
(*https://www.cfd-online.com/Forums/fluent-udf/*)

- - **UDS gradient ??**
(*https://www.cfd-online.com/Forums/fluent-udf/100299-uds-gradient.html*)

UDS gradient ??Previously i was trying to compute gradient of a UDM, but as i understand UDS gradients are pre-calculated by Fluent. And for post-processing, I want to store this gradient value in a UDM.
C_UDSI(c,t,RK) = SQRT(C_UDSI(c,t,K); C_UDMI(c,t,DE) = SQR(C_UDSI_G(c,t,RK)[1]); here, 'k' is the scalar for which transport eqns are being solved, and i need to compute the y-direction gradient of sqrt(k). 'de' is the UDM which i have created to store the square of this gradient value.On compiling the UDF, I am getting an error in the second line Kindly tell me what i may be doing incorrectly, or alternatively any other method of computing gradient of a UDS... Thanks a lot in advance.. |

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