The paper deals with the experimental characterization of different 280 mm diameter tilting pad journal bearings for turbomachines using a dedicated test rig. articles were 5-pad Direct Lube Rocker Pivot bearing, Flooded and 4-pad Ball Socket bearing. three tested in their specific design range operating conditions. Their static dynamic behavior was investigated as function parameters. In parti...

In this white paper we survey the use of computational simulation for aerodynamics, focusing on applications in Aerospace and Turbomachinery. We present some representative problems to illustrate the range of complexity in fluid simulations and the associated computational requirements. We also examine the design process in current industrial practice, and the role played by computational fluid...

within Siemens Energy Sector, Oil & Gas Division, Duisburg, Germany. His main fields of interest are rotor/stator interactions and aeroacoustic phenomena in centrifugal compressors. Dr. König has authored several conference and journal papers in the field of unsteady turbomachinery aerodynamics, and, more recently, on excitation mechanisms in centrifugal compressors. Dr. König Studied Mechanica...

Full-scale numerical prediction of the aerothermal flow in gas turbine engines are currently limited by high computational costs. The approach presented here intends the use of different specialized flow solvers based on the Reynolds-averaged Navier-Stokes equations as well as large-eddy simulations for different parts of the flow domain, running simultaneously and exchanging information at the...

This paper presents a computational approach for optimal robust design and tolerancing of turbomachinery compressor blades that are subject to geometric variability. This approach simultaneously determines the optimal blade geometry and manufacturing tolerances to minimize the overall cost of producing and operating the resulting compressor blades. A pathwise sensitivity method is used to compu...

Forced convective heat transfer plays a significant role in almost all industrial sectors. Examples include cooling of microelectronics, process intensification in the chemical industry, heat exchange/waste heat recovery in power plants and cooling of car engines, to name but a few. In special, a study of forced convective laminar boundary layer behaviour on a flat plate has attracted the atten...