aeroacoustics community on an European scale and European aeronautics activities internationally. In this context, ‘‘aeroacoustics’’ encompasses all aerospace acoustics and related areas. Each year the committee highlights some of the research and development projects in Europe. This paper is a report on highlights of aeroacoustics research in Europe in 2008, compiled from information provided ...

Computational analyses such as computational fluid dynamics and computational structural dynamics have made major advances towards maturity as engineering tools. Computational aeroelasticity (CAE) is the integration of these disciplines. As CAE matures, it also finds an increasing role in the design and analysis of aerospace vehicles. This paper presents a survey of the current state of CAE wit...

Revolutionary surfaces: boosting efficiency in aerospace and turbomachinery ReSiSTant targets the optimisation of two industrial pilot lines by using micro nanostructured surfaces for drag reduction. The objectives are to implement newly developed into aircraft turbofan engines compressors. positive effects such could give benefits terms efficiency, CO2 noise emission reduction, a economic ecol...

Pisa, September 28 th – 30 , 2022 Editorial preface Nowadays, turbomachinery plays a key role in both transportation and power generation. Although the generation is shifting towards exploitation of an increasing share renewable energy sources, large industrial turbomachines, especially gas turbines, will remain indispensable for viable mix next future. Turbomachinery continuously evolving to k...

A harmonic balance technique for modeling unsteady nonlinear  ows in turbomachinery is presented. The analysis exploits the fact that many unsteady  ows of interest in turbomachinery are periodic in time. Thus, the unsteady  ow conservation variables may be represented by a Fourier series in time with spatially varying coefŽ cients. This assumption leads to a harmonic balance form of the Eul...

Gas turbine design, development, monitoring and maintenance are widely based on numerical simulations of the steady and transient engine performance. Most of the equations that are solved in the simulation programs involve the thermodynamic properties of the fluid flowing through the engine. These properties depend on temperature, pressure, humidity and fuel dosage. As the solution of chemical ...

As demands for higher performance migrated from aircraft engines to land based gas turbines the need for EB welding came along also. The transfer of EB welding processes from relatively thin section components in aircraft turbines to land based aero derivative turbines is straightforward since the basic design and function of both aero and aero derivative components are the same or similar. How...