Technical Papers and Presentations

Ejectors are the devices used to carry out mixing and recompression of two fluid streams, one with higher energy and the other with lower Energy. The high energy fluid is passed through the converging nozzle of ejector to very high velocities which in turn creates suction and draws the secondary fluid into the ejector through a secondary inlet.

In the present work an attempt is made to study the entrainment of primary fluid with secondary fluid of a single phase ejector using COMSOL Multiphysics’ CFD module. The impact of varying operating conditions such as nozzle geometry, working fluids and inlet boundary conditions on the performance of the ejector was studied using various fluids like air, R141, R142 are used in the analysis and the results obtained are validated with the 1-D analytical results.