The direction of fixedgradient at boundary patch
Hi,
Can anybody tell me the direction of fixedgradient at boundary interface, I understand that the normal vector at boundary interface points outward, does that mean the direction of fixedgradient also points outward? Thank you Kan |
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I thought the definition of fixedgradient should be (T_c-T_i)/(p_c-p_i), subscript c means cell centre, while i for boundary patch, p_c is larger than p_i at south boundary patch, when I set a negative fixedGradient, then I thought I should get T_c < T_i, but what I actually get is T_c > T_i. could the definition of my fixedgradient is wrong, can anyone clarify the definition of fixedgradient? Thank you Kan |
Quote:
That solved my question |
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