Now showing items 1-20 of 26

  • A 3D low-order panel method for unsteady aerodynamic problems 

    Ortega, Enrique; Flores Le Roux, Roberto Maurice; Oñate Ibáñez de Navarra, Eugenio (2010)
    External research report
    Open Access
    An unsteady low-order panel method for three-dimensional subsonic analyses is presented. The method, which is based on well-established techniques in computational aerodynamics, is intended to achieve a cost-effective ...
  • Aeroelastic analysis of parachute deceleration systems with empirical aerodynamics 

    Ortega, Enrique; Flores Le Roux, Roberto Maurice (2019-11-13)
    Article
    Open Access
    A technique for the aeroelastic solution of parachute decelerators is presented in this work. The methodology uses empirical aerodynamics, based on a filling-time inflation model and Ludtke's area law, coupled to two ...
  • A finite point method for adaptive three-dimensional compressible flow calculation 

    Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2008-10)
    External research report
    Open Access
    The Finite Point Method (FPM) is a meshless technique which is based on both, a Weighted Least-Squares numerical approximation on local clouds of points and a collocation technique which allows obtaining the discrete system ...
  • A finite point method for adaptive-three-dimensional compressible flow calculations 

    Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2009-07-30)
    Article
    Open Access
    The finite point method (FPM) is a meshless technique, which is based on both, a weighted least-squares numerical approximation on local clouds of points and a collocation technique which allows obtaining the discrete ...
  • A meshless finite point method for the three-dimensional analysis of compressible flow problems involving moving boundaries and adaptivity 

    Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Flores Le Roux, Roberto Maurice (2013-10)
    Article
    Restricted access - publisher's policy
    A finite point method for solving compressible flow problems involving moving boundaries and adaptivity is presented. The numerical methodology is based on an upwind-biased discretization of the Euler equations, written ...
  • A meshless finite point method for three dimensional analysis of compressible flow problems involving moving boundaries and adaptivity 

    Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Flores Le Roux, Roberto Maurice (2013-10)
    Article
    Restricted access - publisher's policy
    A finite point method for solving compressible flow problems involving moving boundaries and adaptivity is presented. The numerical methodology is based on an upwind-biased discretization of the Euler equations, written ...
  • A meshless finite point method for three-dimensional analysis of compressible flow problems involving moving boundaries and adaptivity 

    Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Flores Le Roux, Roberto Maurice (2013-10)
    Article
    Open Access
    A finite point method for solving compressible flow problems involving moving boundaries and adaptivity is presented. The numerical methodology is based on an upwind-biased discretization of the Euler equations, written ...
  • An edge-based solver for compressible flow 

    Ortega, Enrique; Flores Le Roux, Roberto Maurice; Oñate Ibáñez de Navarra, Eugenio (2005-10)
    External research report
    Open Access
    An edge-based high-resolution scheme for the solution of the compressible Euler equations on unstructured finite elements grids is presented. The flow solver adopted in the present work is the approximate Riemann solver ...
  • An implicit unsteady hydraulic solver for suspended cuttings transport in managed pressure wells 

    Flores Le Roux, Roberto Maurice; Ortega, Enrique; Ilin, A.; Simpkins, Douglas; Oñate Ibáñez de Navarra, Eugenio (Springer, 2019-04)
    Article
    Open Access
    We present a simulation tool for transient events in complex hydraulic networks. The code includes modelling of the transport of suspended cuttings in near-vertical wells. An unstructured finite volume formulation with ...
  • A numerical investigation of wind tunnel model deformations caused by the twin-sting support system 

    Flores Le Roux, Roberto Maurice; Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio (2010-03)
    Article
    Restricted access - publisher's policy
    The present work is part of a broader investigation aimed at improving the understanding of the aerodynamics of the rear aircraft section. Complex flow phenomena (e.g., the thick fuselage boundary layer at the rear end) ...
  • A numerical investigation of wind tunnel model deformations caused by the twin-sting support system 

    Flores Le Roux, Roberto Maurice; Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio (2009)
    External research report
    Open Access
    This work presents a wing deformation analysis of a twin-sting-mounted commercial aircraft model. Twin-sting arrangements minimize flow disturbances around the model fuselage and tail; on the other hand, they cause important ...
  • A-posteriori error estimation for the finite point method with applications to compressible flow 

    Ortega, Enrique; Flores Le Roux, Roberto Maurice; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (2017-04)
    Article
    Open Access
    An a-posteriori error estimate with application to inviscid compressible flow problems is presented. The estimate is a surrogate measure of the discretization error, obtained from an approximation to the truncation terms ...
  • Application of the finite point method to high- Reynolds number compressible flow problems 

    Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Flores Le Roux, Roberto Maurice (2014-04)
    Article
    Restricted access - publisher's policy
    In this work, the finite point method is applied to the solution of high-Reynolds compressible viscous flows. The aim is to explore this important field of applications focusing on two main aspects: the easiness and ...
  • A simulation tool for parachute/payload systems 

    Flores Le Roux, Roberto Maurice; Ortega, Enrique; Vallés Fluvià, J.; Oñate Ibáñez de Navarra, Eugenio (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
    Conference report
    Restricted access - publisher's policy
    The design and evaluation of parachute-payload systems is a technology field in which numerical analysis tools can make very important contributions. This work describes a new development from CIMNE in this area, a coupled ...
  • Comparative accuracy and performance assessment of the finite point method in compressible flow problems 

    Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo; Flores Le Roux, Roberto Maurice (Elsevier, 2014-01-20)
    Article
    Restricted access - publisher's policy
    A comparative assessment of the Finite Point Method (FPM) is presented. Using a wing-fuselage configuration under transonic inviscid flow conditions as reference test case, the performance of the FPM flow solver is compared ...
  • Development and applications of the Finite Point Method to compressible aerodynamics problems 

    Ortega, Enrique (Universitat Politècnica de Catalunya, 2014-05-12)
    Doctoral thesis
    Open Access
    This work deals with the development and application of the Finite Point Method (FPM) to compressible aerodynamics problems. The research focuses mainly on investigating the capabilities of the meshless technique to address ...
  • Development and applications of the finite point method to compressible aerodynamics problems 

    Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio; Idelsohn Barg, Sergio Rodolfo (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
    Book
    Restricted access - publisher's policy
    En este trabajo se aborda el desarrollo del Método de Puntos Finitos (MPF) y su aplicación a problemas de aerodinámica de flujos compresibles. El objetivo principal es investigar el potencial de la técnica sin malla para ...
  • Efficient aeroelastic analysis of inflatable structures using enhanced potential flow aerodynamics 

    Ortega, Enrique; Flores Le Roux, Roberto Maurice; Cuartero Zaragoza, Eric; Oñate Ibáñez de Navarra, Eugenio (2019-10)
    Article
    Restricted access - publisher's policy
    An efficient method for the aeroelastic analysis of wind effects on inflatable structures is presented. The solution scheme is staggered and uses an explicit finite-element structural solver and potential flow aerodynamics. ...
  • Efficient aeroelastic analysis of wind loads on inflatable hangars 

    Flores Le Roux, Roberto Maurice; Ortega, Enrique (International Centre for Numerical Methods in Engineering (CIMNE), 2019)
    Conference report
    Open Access
    Wind loads play a crucial role in inflatable structures. Unfortunately, design loads from safety regulations grossly overestimate the real aerodynamic forces. Thus, a more accurate estimation of wind loads is desirable. ...
  • Explicit dynamic analysis of thin membrane structures 

    Flores Le Roux, Roberto Maurice; Ortega, Enrique; Oñate Ibáñez de Navarra, Eugenio (2011-02)
    External research report
    Open Access
    An explicit dynamic structural solver developed at CIMNE for the analysis of parachutes is presented. The canopy fabric has a negligible out-of-plane stiffness, therefore its numerical study presents important challenges. ...