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试验是在两个不考虑炉型的二维和圆桶形模型上进行的。圆桶模型用玻璃珠、绿豆、黄豆和玻璃球四种填料,模型与填料的当量直径比变化在9.7～123.6之间。用Ergun公式计算的阻损值与实测的阻损值相比得知,只有当d模/d填≥30时,模型边壁效应方可略去不计。二维模型用玻璃珠以外的三种填料,其d模/d填比变化在 7.87～41.98之间。试验结果与上相似,只是边壁效应在相同条件下比较明显些。试验还得知,为使填料体床层稳定,仅保证d模/d填比大于某值不行,还应使填料颗粒具有足够的重度。判断填料体内气体流动特性应使用修正的雷诺准数。
The experiment was performed on two two-dimensional and cylindrical models that did not consider the furnace. Cylinder model with glass beads, mung bean, soybeans and glass balls four filler, model and packing equivalent diameter ratio between 9.7 ~ 123.6. The resistance loss value calculated by Ergun formula is compared with the measured resistance loss value. It can be concluded that the wall effect of the model can be neglected only when d mode / d is set to ≥30. Three-dimensional model with glass beads other than the three fillers, d die / d fill change between 7.87 ~ 41.98. The test results are similar to the above, except that the side wall effect is more pronounced under the same conditions. Test also learned that, in order to make the bed of the filler body stable, only to ensure that d die / d fill ratio greater than a certain value should not, but also to make the filler particles have enough severe. Determine the gas flow characteristics of the filler body should be used to correct the Reynolds number.