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VKI

Von Karman Institute for Fluid Dynamics
97 Projects, page 1 of 20
  • Funder: European Commission Project Code: 259354
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  • Funder: European Commission Project Code: 273571
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  • Funder: European Commission Project Code: 885985
    Overall Budget: 166,320 EURFunder Contribution: 166,320 EUR

    Civil structures and infrastructures in desert environments and sandy coastal regions are sensitive to windblown sand. Even if the problem was first tackled in the fifties, it has emerged as a key scientific, technical and economic issue in the last decade. Indeed, windblown sand effects can lead to several incremental costs in infrastructure management, and also disastrous events. The demand for the design of Sand Mitigation Measures (SMM) has grown in the last decade and it is expected to further increase in the next years. However, the rigorous performance assessment of SMMs is still missing in the scientific literature and technical practice. On the one hand, the multiphysics and multiscale nature of the involved phenomena make analytical approaches inapplicable. On the other hand, current experimental physical and computational approaches do not fulfill alone modelling requirements and practical needs of infrastructure designers. The HyPer SMM project aims at finding a way forward by developing an innovative hybrid approach, as a brand-new design-and-assessment methodology in the field. It combines innovative Wind-Sand Computational Simulations (WSCS) and highly reliable Wind-Sand Tunnel Test (WSTT). The main scientific and training objectives of the project include: - the development of highly reliable WSTT to assess SMM performance; - the extension of WSTT-based SMM performance from scale to full-scale conditions by means of WSCS; - the drafting of best practices/guidelines to SMM performance assessment; - enrich Experience Researcher’s (ER) scientific competences on the specific topic; - enforce ER’s management skills and professional independence. In order to guarantee the multidisciplinary and intersectoral objectives, the layout of the project envisages the ER hosting at a research center in fluid dynamics (Von Karman Institute, BE) and the ER secondment at a consulting company in computational simulations (Optiflow, FR).

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  • Funder: European Commission Project Code: 820883
    Overall Budget: 1,964,520 EURFunder Contribution: 1,964,520 EUR

    One of the key technologies to enable efficient Ultra-High By-Pass ratio geared turbofans is the low-pressure turbine (LPT). While the geared engine architecture allows a large reduction in LPT stage count and weight, the LPT operates at transonic exit Mach numbers and low-Reynolds numbers. Within this range of operating conditions, there is a critical shortage of aerodynamic and performance measurements. A lack of relevant experimental data in these engine-like conditions also concerns the interaction of the secondary-air and leakage flows with the mainstream. SPLEEN aims at filling up this gap with an extensive experimental undertaking that investigates the aerodynamics of high-speed LP turbines of geared-fan propulsion systems. The project focuses on the interaction of cavity purge and leakage flows with the mainstream and its impact on the turbine performance. SPLEEN addresses this challenge with detailed flow measurements in two world-class turbine rigs: a large scale, transonic, low-Reynolds number linear cascade including periodic incoming wakes, and a high-speed 1.5 stage turbine rig. The project first investigates the effect of cavity geometries and purge flow rates on the local flow features and turbine performance in the linear cascade. A new technology for the reduction of leakage-induced losses will be proposed, designed and tested in the cascade facility. In the second part of SPLEEN, a 1.5 LP turbine stage is tested at scale 1 in the rotating rig. The flow structures, turbine global performance and the unsteady leakage/purge flow interactions are measured at fully representative engine conditions. Turbine experiments are carried out at different operating conditions for two sets of hub and shroud cavity configurations. The SPLEEN project will validate new high-speed LPT technologies in engine-relevant environments (TRL up to 5) delivering new critical knowledge and unique experimental databases of major importance for turbomachinery designs.

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  • Funder: European Commission Project Code: 713726
    Overall Budget: 149,921 EURFunder Contribution: 149,921 EUR

    One successful outcome of the AEROSPACEPHYS ERC StG, entitled “Multiphysics models and simulations for reacting and plasma flows applied to the space exploration program,” is the development of a new software library called MUTATION++: MUlticomponent Thermodynamic And Transport properties for IONized gases in C++. The library compiles the state-of-the-art physico-chemical models and algorithms developed by the team into a highly extensible and robust software package to be coupled to simulation tools used by space agencies and industries. The design of the library allows for high-performance integration in material and flow field simulation tools. MUTATION++ is also shipped with several stand-alone tools that provide up-to-date basic data without proper software linking. Such a compromise allows simulation tool users, who do not have access to the source code, to benefit from these models. Taking community development to the next level requires the improvement and enrichment of the software testing framework and database, giving new users development guidelines and technology transfer examples. The MUTX project will allow us to extend the user base of MUTATION++ to the corporate community. This will require the implementation of tests to ensure the preservation of the library functionalities and performance after each new release and on multiple hardware and software platforms. It will also require the addition of databases for real thermal protection materials currently being developed by the space industry in collaboration with the European Space Agency. The demonstration of a transdisciplinary technology transfer will be achieved by implementing a database for biomass pyrolysis simulation. One long-term goal of the MUTX project is to enable the PI and his team to obtain additional funding through participation in research contracts in collaboration with industrial partners using MUTATION++.

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