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  1. Small high pressure ratio turbines - article pay-per-view - 25€ / article

    Small high pressure ratio turbines - article pay-per-view - 25€ / article

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    Applications for this type of turbines range from small gas turbine engines for light helicopters through airborne and land-based auxiliary power units, automotive powerplants, turboexpanders, mechanical drive steam turbines, solar powerplants working with organic fluids and turbopumps for liquid fuel rockets. Depending on the application, the turbines may be of the radial, axial or mixed flow type. The combination of small blade heights and high Mach numbers and turning angles makes the design of these turbines particularly arduous, especially if the rotor inlet Mach numbers are supersonic. Extensive design experience and the use of advanced design tools can overcome these problems as was demonstrated by the group of lecturers who were selected for this course. The lectures addressed primarily turbine design and development engineers. But testing techniques and advanced calculation methods were also discussed. Learn More
  2. Review of the VKI doctoral Research 2011-2012

    Review of the VKI Doctoral Research 2011-2012 - Free download

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    The third Symposium on the doctoral research took place at of the von Karman Institute for Fluid Dynamics took place during the period March 5 to 7, 2012. The doctoral students have presented the progress of their research work carried out in the 3 departments. Learn More
  3. Review of the VKI Doctoral research 2013-2014

    Review of the VKI Doctoral Research 2013-2014 - Free download

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    The fifth symposium on the doctoral research of the von Karman Institute for Fluid Dynamics took place during the period March 10 to 12, 2014. The doctoral students have presented the progress of their research work carried out in the three departments: Aeronautics and Aerospace, Environmental and Applied Fluid Dynamics, Turbomachinery and Propulsion. The first year students have presented a poster on their research plans and some preliminary results, while the most advanced students have proposed a presentation followed by a session of questions.

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    Aero-Engine design: From state-of-the-art Turbofans article pay-per-view 25€/article

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    The first lectures notes focus on the preliminary design of state of the art turbofan engine for the propulsion of civil aircraft. Issues like thermodynamic cycle, mission analysis, and off design operation (operating line) are addressed. Practical examples are presented. Once this important phase is completed, the different design teams have the boundary conditions to start the design of each component.

    VKI LS 2008-03

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    35Th CFD/ADIGMA course on very high order discretization methods article pay-per-view 25€/article

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    Schemes with order of accuracy higher than two have become an important subject of research in CFD, and the perspective of applying them in industrial aeronautical context is realistic within the next decade. In these course notes the basics and state of the art of the following methods are discussed in detail: Discontinuous Galerkin Finite Element methods; Spectral Element and Spectral Finite Volume methods; Residual Distribution methods. An effort was made to introduce the methods on model problems before applying them to the compressible and incompressible Navier-Stokes equations. Basic ideas like convergence analysis, a priori and duality based error estimates or adjoint consistency and shock capturing are discussed in much detail. Implementation issues are treated, such as efficient quadrature, parallelization, memory consumption and treatment of curved walls. Applications targeted are mainly in the area of steady and unsteady compressible aerodynamics, including transonic and supersonic flow.

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    36th CFD/ADIGMA course on HP-adaptive and HP-multigrid methods article pay-per-view 25€/article

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    The present proceedings are the second in a series of two Lecture Series organized in collaboration with the European Union targeted research project ADIGMA. The subject of this project was the development of adaptive higher order variational methods for aerospace applications.

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    Introduction to optimization and multidisciplinary design in aeronautics and turbomachinery article pay-per-view 25€/article

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    Innovative optimization and design techniques for modern aircraft (manned or UAV/UCAV) and engine systems aiming at maximum performance in a multidisciplinary context (aerodynamic efficiency, safety, drag, losses, weight, strength, heat fluxes, emission, noise, …), are now rapidly moving from research labs to industrial real and virtual platforms. To reach concurrently this level of excellence, emergent optimization methodologies require more and more robust and efficient associated software for a daily use in industrial collaborative design environments.

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    Plasma flow control: Fundamentals, modeling and applications article pay-per-view 25€/article

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    Advances in aero-thermodynamics, aero-elasticity and aero-acoustics largely depend on the understanding of the flow structures, and the ability to control them. The first lecture note reviews the various approaches that are being followed for plasma flow control. The fundamental interaction mechanisms are presented together with the challenges associated to their implementation depending on the flow regime. A presentation on the mechanisms for the generation of momentum transfer using offset dielectric barrier discharges follows, focusing on the physics of the breakdown formation. The next lecture note addresses phenomenological models that can be used in conjunction with CFD codes, from simple algebraic equations to complex set of partial difference equations. The first part is concluded with the use of DBD actuators in various applications for internal and external flow control, over a range of Mach numbers from 0.1 to 3.5, in a wide static pressure range from 0.1 to 9 bar.

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  9. Modeling and application of transport phenomena in porous media - article pay-per-view - 25€ / article

    Modeling and application of transport phenomena in porous media - article pay-per-view - 25€ / article

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    Transport phenomena in porous media are very important in a wide range of applications including chemical and nuclear indus­tries, oil recovery, civil engineering and energy related pro­blems. The objectives of this lecture series was to present a methodology for developing well posed mathematical models of transport in porous media and to give examples of recent advances in modeling transport phenomena of special interest. In the first session, modeling based on a continuum approach involving multiple extensive quantities and multiple media was introduced. Representative elementary volume and averaging definitions lead to the derivation of microscopic balance equa­tions. The following session was devoted to the provision of information on the structural features of porous media. Stochastic descriptions of the properties of porous media, homogeneity and heterogeneity were presented. Simulation of the random structure of porous media was discussed. Succeeding lectures showed how the understanding of phenomena at pore level permits the derivation of the general macroscopic balance equations of mass, momentum and energy in porous media. Emphasis was placed on the complete model with discussion of the problem of initial and boundary conditions. Several lectures were devoted to the modeling of multiphase flow in porous media; wettability, capillarity and hyneresis phenomena were considered; the relative permeability concept was introduced. The last session was assigned to the presentation of typical applications especially in connection with groundwater flow and pollution of aquifer, boiling and dryout problematics in liquid saturated self heated particulate beds, drying processes and spatial heat transport systems based on thermal capillary pumping. Learn More
  10. Review of the VKI Doctoral research 2012-2013

    Review of the VKI Doctoral Research 2012-2013 - Free download

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    The fourth symposium on the doctoral research of the von Karman Institute for Fluid Dynamics took place during the period March 4 to 6, 2013.

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