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从控制真实流体流动的 NS方程出发 ,在一种新的近似假设基础上 ,推得了变壁温平板空气强迫对流边界层扩展方程的数学模型 ,对其中的动量方程和能量方程进行了相似性处理和数值求解 ,给出了壁面温度呈指数规律变化时的无量纲速度、温度分布曲线 .该结果在中、小雷诺数范围内较传统边界层方程的计算结果具有较好的准确性
Based on a new approximation assumption, based on the Navier-Stokes equations governing the flow of real fluids, a mathematical model of the expansion equation of forced convective boundary layer air wall temperature is deduced, and the momentum and energy equations are treated similarly And the numerical solution, the non-dimensional velocity and temperature distribution curve when the wall temperature changes exponentially are given.The result is more accurate than the traditional boundary layer equation in the medium and small Reynolds number range