摘要
The paper is focused on identifying error sources in computational fluid dynamics(CFD) predictions of a spray drying process. Seven groups of drying and atomisation parameters were selected for analysis and 13simulation trials were performed. The theoretical results were compared with experimental data and sensitivity of the simulation results to the analysed factors was determined. The following parameters affecting the accuracy of CFD spray modelling were found: gas turbulence model, particle dispersion, atomising air, initial parameters of atomisation and heat losses to the environment. A major difference in the errors committed during modelling of spray drying process for fine and coarse sprays was observed.
The paper is focused on identifying error sources in computational fluiddynamics(CFD) predictions of a spray drying process. Seven groups of drying and atomisationparameters were selected for analysis and 13 simulation trials were performed. The theoreticalresults were compared with experimental data and sensitivity of the simulation results to theanalysed factors was determined. The following parameters affecting the accuracy of CFD spraymodelling were found: gas turbulence model, particle dispersion, atomising air, initial parametersof atomisation and heat losses to the environment. A major difference in the errors committed duringmodelling of spray drying process for fine and coarse sprays was observed.
基金
SupportedbytheInternationalFineParticleInstitutein1998/2001(No.ARR35)andPolishCommitteeforScientificResearch(No.3T09C04818).