Numerical analysis of the performance impact of linear-to-venturi ejectors under restricted conditions
Analyzing a 0.8 WM gas ejector model from a certain factory.By improving the ejector with different linear forms under various basic structural parameters and working conditions,the study investigates the impact of geometric parameters such as linear form on the performance of the ejector.A total of four linear forms are used,including the straight-line type,hyperbolic type,elliptic type Ⅰ,and elliptic type Ⅱ,with the traditional straight-line type ejector serving as the control group.Solidworks is used for software modeling,and numerical simulation is conducted using the Ansys Fluent software.The restricted space adopts the actual furnace size used in production,with dimensions of 1 m×1.5 m for an elliptical combustion furnace.After numerical simulation and analysis,it is ultimately concluded that when the inlet section length of the ejector is 30 mm,and the ejector is of the elliptic type Ⅰ,while keeping the inlet velocity range of the ejecting fluid unchanged,changing the nozzle diameter to 5 mm results in a shift of the critical point of the blockage effect to the rear,leading to a higher ejector coefficient.
ejectorejector coefficientnumerical simulationflow field
万方数据
维普
