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Temperature gradient macros

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Old   October 3, 2009, 05:14
Post Temperature gradient macros
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Ameya Durve
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I am studying the mixing of two non-siothermal jets. The maximum temperature difference between the jets is 5 K (cold jet at 298 K and hot jet at 303 K)

However, when I extract the data of temperature gradients I get following values:

Gradients

C_T_G(c, t)[0] = -511.587 (min value) and 666.1385 (max value)
C_T_G(c, t)[1] = -118.3925 (min value) and 165.9301 (max value)

Reconstruction Gradients



C_T_RG(c, t)[0] = -311.3554 (min value) and 374.1836 (max value)
C_T_RG(c, t)[1] = -114.3944 (min value) and 160.957 (max value)


Can anyone please explain why fluent is showing such high values of gradients when the max temperature difference is only 5 K and the system does not involve any sources for generation of heat

P.S: I have extracted the values of these gradients by assingning an UDMI to each one of them.

Last edited by ameyadurve; October 3, 2009 at 08:45.
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Old   October 9, 2009, 13:16
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Akour
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do you mind posting your UDF? and information about your geometry.
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