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各位大佬好,模型是一个0.125x0.5x0.6m的光滑通道,上下壁面均为无滑移的300K恒温壁面,进口温度320K,进出口及左右壁面均采用周期性边界条件,模拟步骤是先用RANS模拟,之后使用TUI指令添加扰动然后切换到LES模拟。按理说流体温度应该小于等于320K而且随时间逐渐减小,但是云图画出来最高温度有323K,又模拟了0.5s后最高温度没什么变化其他地方的温度似乎也没什么变化。周期性设置如图(压力梯度最开始为0) 我想知道是为啥