Bachelor’s / Master’s Thesis: CFD Analysis of Oil Distribution in Spherical Roller Bearings Con[...]

Rheinisch-Westfälische Technische Hochschule Aachen Aachen

Stellenbeschreibung:

The Institute for Machine Elements and System Development researches the fundamental structural and tribological behavior of machine elements and maps this behavior through experimentally validated model descriptions. These model descriptions are used to analyze and design the functional performance, energy losses, and acoustic behavior of complete technical systems, with a focus on drivetrain technology. In addition, the developed models serve as a basis for researching and developing methods for Model-Based Systems Engineering (MBSE) as a central element in future industrial product development processes.

Spherical roller bearings are a key component in many technical systems with high load requirements. The distribution of lubricating oil and the flow-induced losses within the bearing significantly affect the efficiency and service life of such systems. While some CFD analyses of rigid geometries already exist in the literature, the application of dynamic mesh techniques in CFD simulations of spherical roller bearings remains relatively unexplored.

This thesis investigates the flow behavior in spherical roller bearings with moving rolling elements and cage structures, using dynamic meshes. Validation is carried out based on experimental data on oil distribution and hydraulic losses, which are available from the test rig.

Tasks

Development of a CFD simulation environment (OpenFOAM or Simerics) for a spherical roller bearing
Implementation of dynamic mesh motion for rolling elements and cage
Analysis of oil distribution and calculation of hydraulic losses
Validation using existing test rig data (oil distribution, power loss)
Evaluation of the influence of dynamic motion on flow behavior and losses