烟草专用标准恒流孔的研究

为了更好地测量卷烟吸阻和滤棒压降,基于计算流体动力学的角度对烟草专用恒流孔进行了研究,采用有限体积法和Realizable k-ε的湍流模型进行三维数值仿真,能够模拟烟草专用恒流孔的内部流动情况,并进行了理论、数值仿真和实验研究。实验数据和在浙江中烟标准化实验室测得的标准恒流孔入口端的体积流量的实验数据对比,综合分析后发现标准恒流孔能在其前端保持恒定的体积流量。

Study on Tobocco Critical Flow Orifice

To measure draw resistance of cigarette and pressure drop of filter better, a new perspective based on computational fluid dynamics(CFD) about critical flow orifice is studied. Three dimensional numerical simulation with the finite volume method and Realizable k-ε model has been carried out in order to get the internal flow phenomenon in critical flow orifice. Further research is conducted from the three parts: theoretical analysis, numerical simulation and experimental. Experimental data is compared with the experimental data of the volume flow rate of the critical flow orifice inlet which is measured in China Tobacco Zhejiang standardized laboratory, from the comprehensive analysis, CFO can maintain a constant volume flow rate at its front.