图1 入口管箱几何模型示意图1—入口弯管;2—弯管后直管;3—管箱前扩张段;4—分布器;5—过滤网;6—管箱;7—换热管

Fig.1 Schematic diagram of geometric model of inlet pipe box

图2 换热管排布示意图

Fig.2 Schematic diagram of the layout of the heat exchange tube

图3 网格无关性验证

Fig.3 Verification of mesh independence

图4 弯管内不同偏转角度处气固流动的速度分布和实验数据的比较

Fig.4 Comparison of velocity distribution and experimental data of gas-solid flow at different deflection angles inside a curved pipe

图5 不同颗粒质量流量下底面沉积速率随入口速度变化情况

Fig.5 The variation of bottom deposition rate with inlet velocity under different particle mass flow rates

图6 不同颗粒质量流量下沉积效率随入口速度变化情况

Fig.6 The variation of deposition efficiency with inlet velocity under different particle mass flow rates

图7 颗粒质量流量为0.002 kg·s-1的入口管箱对称面固相速度矢量图

Fig.7 Solid phase velocity vector diagram on the symmetrical plane of the inlet pipe box with a particle mass flow rate of 0.002 kg·s-1

图8 颗粒质量流量为0.002 kg·s-1的管箱底面沉积云图

Fig.8 Deposition cloud map of the bottom surface of the pipe box with a particle mass flow rate of 0.002 kg·s-1

图9 颗粒入口速度为1.5 m·s-1的入口管箱对称面固相速度矢量图

Fig.9 Solid phase velocity vector diagram on the symmetrical plane of the inlet pipe box with a particle inlet velocity of 1.5 m·s-1

图10 不同颗粒直径下底面沉积速率随入口速度变化情况

Fig.10 The variation of bottom deposition rate with inlet velocity under different particle diameters

图11 不同颗粒直径下沉积效率随入口速度变化情况

Fig.11 The variation of deposition efficiency with inlet velocity under different particle diameters

图12 颗粒直径为30 μm的入口管箱对称面固相速度矢量图

Fig.12 Solid phase velocity vector diagram on the symmetrical plane of the inlet pipe box with a particle diameter of 30 μm

图13 颗粒直径为30 μm的管箱底面沉积云图

Fig.13 Deposition cloud map of the bottom surface of the pipe box with a particle diameter of 30 μm

图14 颗粒直径为40 μm的入口管箱对称面固相速度矢量图

Fig.14 Solid phase velocity vector diagram on the symmetrical plane of the inlet pipe box with a particle diameter of 40 μm

图15 颗粒直径为40 μm的管箱底面固体颗粒体积分数的径向分布

Fig.15 Radial distribution of solid particle volume fraction on the bottom surface of the pipe box with a particle diameter of 40 μm

图16 颗粒直径为40 μm的管箱底面沉积云图

Fig.16 Deposition cloud map of the bottom surface of the pipe box with a particle diameter of 40 μm

图17 颗粒直径为50 μm的入口管箱对称面固相速度矢量图

Fig.17 Solid phase velocity vector diagram on the symmetrical plane of the inlet pipe box with a particle diameter of 50 μm

图18 颗粒直径为50 μm的管箱底面固体颗粒体积分数的径向分布

Fig.18 Radial distribution of solid particle volume fraction on the bottom surface of the pipe box with a particle diameter of 50 μm

图19 颗粒直径为50 μm的管箱底面沉积云图

Fig.19 Deposition cloud map of the bottom surface of the pipe box with a particle diameter of 50 μm

图20 不同颗粒质量流量下底面沉积速率随颗粒直径变化情况

Fig.20 The variation of bottom deposition rate with particle diameter under different particle mass flow rates

图21 不同颗粒质量流量下沉积效率随颗粒直径变化情况

Fig.21 The variation of deposition efficiency with particle diameter under different particle mass flow rates

图22 颗粒质量流量为0.002 kg·s-1的入口管箱对称面固相速度矢量图

Fig.22 Solid phase velocity vector diagram on the symmetrical plane of the inlet pipe box with a particle mass flow rate of 0.002 kg·s-1

图23 颗粒质量流量为0.002 kg·s-1的管箱底面沉积云图

Fig.23 Deposition cloud map of the bottom surface of the pipe box with a particle mass flow rate of 0.002 kg·s-1