Analysis of the Power Losses in Geared Transmissions Measurements and CFD Calculations Based on Open Source Codes
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The increasing demand of more and more efficient gearboxes implies the need of predictive models. Models provided by literature for load independent power losses are mainly based on experimentally derived relations that are not so accurate on real applications. A new trend suggests to use CFD for the calculation of the no-load losses of gear transmissions. In this sense, literature provides some works but most of them involve only one single phase. In this paper, some investigations of both the oil-windage losses and the churning losses in which the gears are immersed in an air/oil lubricant mixture are studied. Furthermore, some attempts to reduce the computational effort have been successfully tested.
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Churning power losses of ordinary gears: A new approach based on the internal fluid dynamics simulations Concli F; Gorla C; Della Torre A; Montenegro G (2015)The increasing need of more and more efficient gearboxes implies the need of predictive models in order to compare, during the design stage, different design solutions. The models provided by literature are mostly ...
Analysis of power losses in an industrial planetary speed reducer: Measurements and computational fluid dynamics calculations Concli F; Conrado E; Gorla C (2014)In this work, experimental and theoretical analyses of the power losses in an industrial planetary speed reducer were performed in order to define the weight of the different types of power losses in the global efficiency ...
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