To validate the CFD simulation, the numerical predictions were compared to test data and good agreement was found between them. Parametric study was performed on these widely adopted 1-D analytical ejector models.įLUENT, commercially available Computational Fluid Dynamics (CFD) software, was The equations of the constant-pressure and constant-area models were verified. Shock occurring in the primary stream, are included in the generalized ejector model.Īdditionally, this model has been applied to two-phase systems including the gas-liquidĮjector designed for a Proton Exchange Membrane (PEM) fuel cell system. “Off-design” operating conditions, such as the Please note the following relationships: - Motive nozzle diameter is a function of motive gas flow rate, pressure, temperature & molecular weight. ![]() New model extends existing models and provides a high level of confidence in the Relationship between the cosntant-pressure and constant-area 1-D ejector models. Previous 1-D analytical models can be derived from this newĬomprehensive model as particular cases. The 1D model is developed based on thermodynamic equations governing perfect gas flow correlations is used in the current study to improve the ejector: design. ![]() A generalized ejector model was successfully developed for gas ejector design and
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