CAJ | 학술논문

借助 Fluent 软件,建立了不同工况状态、不同胶层厚度和不同流道的天然橡胶干燥模型,模拟了气体的流动状况.根据胶层表面压差和中心面竖向速度的分布情况,分析了相应模型气流分布的均匀性.结果表明:矩形流道模型,胶层表面压差沿流向逐渐增大分布,导致了穿过橡胶层气流分布的不均匀,气流量越大、干燥阶段越往后,气流分布的不均匀性越明显;梯形流道模型,不同胶层厚度的流体分布规律基本一致,在斜面斜率最大时,气流均匀化效果较优;干燥状态一定时,组合模型两段斜面的合理设置,气流分布的均匀性进一步提高;相对整个干燥过程而言,梯形流道⑤模型气流分布的整体均匀化效果比斜面组合②模型的更好.
차조 Fluent 연건,건립료불동공황상태、불동효층후도화불동류도적천연상효간조모형,모의료기체적류동상황.근거효층표면압차화중심면수향속도적분포정황,분석료상응모형기류분포적균균성.결과표명:구형류도모형,효층표면압차연류향축점증대분포,도치료천과상효층기류분포적불균균,기류량월대、간조계단월왕후,기류분포적불균균성월명현;제형류도모형,불동효층후도적류체분포규률기본일치,재사면사솔최대시,기류균균화효과교우;간조상태일정시,조합모형량단사면적합리설치,기류분포적균균성진일보제고;상대정개간조과정이언,제형류도⑤모형기류분포적정체균균화효과비사면조합②모형적경호.
This paper established the different working states,different thickness and different channel of natural rubber drying models,and simulated the flow conditions of the gas using Fluent software. According to the surface pressure difference of the natural rubber and the vertical speed distribution of the center plane,the corresponding models of air distribution uniformity were analyzed. The results showed that in the rectangle runner model,the surface pressure difference along the flow direction increased gradually,resulting in an uneven distribution of the flow through the rubber layer. With greater gas flow and longer drying time,the air distribution uniformity became more obvious. In the trapezoidal runner model,the fluid distribution was basically consistent with different layer thickness,With the maximum slope gradient,the flow uniformity reached the best condition. At certain drying state,if the two paragraphs cants of combination model were placed reasonably,the airflow uniformity could be further improved. The overall airflow distribution uniformity was better in the trapezoidal model.