This article presents a methodology dedicated to the vibration analysis of turbomachine blades accounting for both geometric nonlinearities and nonlinear blade-tip/casing contacts in numerically efficient way through use reduced order models. Contact is handled with Lagrange multipliers equation motion integrated forward time using an explicit central difference integration scheme. Nonlinear in...

This research discusses developing an Euler turbine-based hybrid mesh turbomachinery. Within the framework of mechanical engineering science, turbomachinery classification and a novel method for design were considered. In such turbomachine, large blades are replaced by set smaller blades, which interconnected to form flow channels in structure. Previous studies (and reasoning within inductive d...

A pump as turbine (PAT) is a turbomachine that converts hydraulic energy into electricity. One of the study topics in PAT efficiency due to centrifugal pumps are not designed operate reverse mode. Geometric variations impeller have been studied literature. However, it was possible evidence influence inclination blade leading and trailing edge. Therefore, objective this work analyze numerically ...

This paper presents a throughflow analysis tool developed in the context of the average-passage flow model elaborated by Adamczyk. The Adamczyk’s flow model describes the 3-D timeaveraged flow field within a blade row passage. The set of equations that governs this flow field is obtained by performing a Reynolds averaging, a time averaging and a passage-to-passage averaging on the Navier-Stokes...