【摘要】 针对颗粒两相可压缩湍流边界层开展直接数值模拟，系统分析颗粒反馈力热对边界层内湍流的动量和能量输运的影响机制。研究发现，颗粒反馈力对湍流产生了明显的抑制效果，使得壁面摩阻降低、Reynolds应力和湍流热通量减小，近壁处流体温度升高。热颗粒对流体的反馈热进一步使湍流抑制效果增强，特别是在动量和能量输运中，Reynolds应力和湍流热通量对壁面摩阻和热流的贡献显著降低。冷颗粒对流体的热反馈作用则使湍流脉动相较仅考虑力耦合的算例有所增强。从颗粒运动的角度来看，相较绝热颗粒，冷颗粒在边界层内脉动速度和相对流体的脉动滑移速度更大，而热颗粒使周围流体的黏性系数增加，进而导致其脉动速度和脉动.滑移速度相对较小。更多还原

【Abstract】 In this paper, direct numerical simulation was carried out on the boundary layer of the particle-laden,compressible turbulent flow, and the influence mechanism of particle feedback force and heat on the momentum and energy transport in the turbulent boundary layer was systematically analyzed. The study found that the particle feedback force significantly inhibits turbulence, resulting in reduced wall friction resistance, Reynolds stress and turbulent heat flux, as well as an increase in the fluid temperature near the wall. The feedback heat from the thermal particles to the fluid further enhances the turbulence suppression effect, especially in momentum and energy transport,where the contributions of Reynolds stress and turbulent heat flux to wall friction resistance and heat flow are significantly reduced. The thermal feedback effect of cold particles on the fluid enhances the turbulent fluctuation compared to cases with only force coupling. From the perspective of particle motion, the fluctuating velocity and slip velocity are greater for cold particles compared to isothermal particles, whereas thermal particles increase the viscosity of the surrounding fluid, consequently leading to relatively smaller fluctuating and slip velocities.更多还原