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Ara es mostren els items 1-20 de 31

    • A 0D approach fot extended operational modeling of air ejectors in thermal systems 

      Schillaci, Eugenio; Oliet Casasayas, Carles; Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Vemula, Jagadish Babu; Duponcheel, Matthieu; Bartosiewicz, Yann; Planquart, Philippe (Begell House, 2023)
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      Classic ejector models work accurately only in normal operating conditions, i.e. when the primary flow is in supercritical conditions. Moreover, they do not take into account abnormal situations, such as when the primary ...

    • A CFD-based surrogate model for predicting flow parameters in a ventilated room using sensor readings 

      Morozova, Nina; Trias Miquel, Francesc Xavier; Capdevila Paramio, Roser; Schillaci, Eugenio; Oliva Llena, Asensio (2022-07-01)
      Article
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      In this work, we develop a computational fluid dynamics (CFD)-based surrogate model, which predicts flow parameters under different geometrical configurations and boundary conditions in a benchmark case of a mechanically ...

    • A free surface model for the numerical simulation of oscillating water column systems 

      Schillaci, Eugenio; Balcázar Arciniega, Néstor; Jofre Cruanyes, Lluís; Lehmkuhl Barba, Oriol; Castro González, Jesús (International Association for Computational Mechanics (IACM), 2014)
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      The aim of this work is to propose and validate a numerical model that represents the hydrodynamic behavior of an Oscillating Water Column (OWC) device, that has been shown to be one of the most promising ways to extract ...

    • A level-set aided single-phase model for the numerical simulation of free-surface flow on unstructured meshes 

      Schillaci, Eugenio; Jofre Cruanyes, Lluís; Balcázar Arciniega, Néstor; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (Elsevier, 2016-11-25)
      Article
      Accés obert
      A new single-phase scheme for the numerical simulation of free-surface problems on 3-D unstructured meshes is presented. The flow field is obtained from the discrete solution of the incompressible Navier-Stokes equations, ...

    • A low-dissipation convection scheme for the stable discretization of turbulent interfacial flow 

      Schillaci, Eugenio; Jofre Cruanyes, Lluís; Balcázar Arciniega, Néstor; Antepara Zambrano, Óscar; Oliva Llena, Asensio (Elsevier, 2017-08-10)
      Article
      Accés obert
      This paper analyzes a low-dissipation discretization for the resolution of immiscible, incompressible multiphase flow by means of interface-capturing schemes. The discretization is built on a three-dimensional, unstructured ...

    • A numerical set-up for the simulation of infection probability from SARS- CoV-2 in public transport vehicles 

      Schillaci, Eugenio; Vera i Fernández, Jordi; Morozova, Nina; Rigola Serrano, Joaquim (Scipedia, 2022)
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      In this work, a numerical framework aimed at simulating the transport of contaminants and infectious agents within a closed domain is presented. The method employs mature CFD algorithms to calculate air fields with reasonable ...

    • A numerical study of liquid atomization regimes by means of conservative level-set simulations 

      Schillaci, Eugenio; Antepara Zambrano, Óscar; Balcázar Arciniega, Néstor; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Elsevier, 2019-01-30)
      Article
      Accés obert
      In this work, a conservative level-set finite-volume solver for interface-capturing is employed to perform the direct numerical simulation of Liquid Jets discharging into a quiescent air chamber. The scope is to propose a ...

    • Air Conditioning in Public Transport Vehicles. Numerical Simulation of Contaminants Transport and Infection Probability 

      Vera i Fernández, Jordi; Schillaci, Eugenio; Rigola Serrano, Joaquim; Arolas, Marc; Del Rivero, Oriol (Purdue University, 2022)
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      In this work, a numerical set-up is built to perform transient numerical simulations of air flow and contaminant transport within transport vehicles. In particular the case of a urban bus is proposed and analysed in detail, ...

    • Air ejector analysis in normal and abnormal modes, oriented to control purposes in aircraft systems 

      Schillaci, Eugenio; Oliet Casasayas, Carles; Vemula, Jagadish Babu; Duponcheel, Matthieu; Bartosiewicz, Yann; Planquart, Philippe (European Conference for AeroSpace Sciences (EUCASS), 2022)
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      The integration of Ultra High Bypass Ratio (UHBR) engines introduces important restrictions of space for the aircraft pylon, and as a consequence on the embedded bleed air system. Under this scenario, a reduction of the ...

    • Air ejector znalysis in extended operational perimeter for control oriented simulation of bleed-air aircraft systems 

      Schillaci, Eugenio; Oliet Casasayas, Carles; Vemula, Jagadish Babu; Duponcheel, Matthieu; Bartosiewicz, Yann; Planquart, Philippe (Institute of Physics (IOP), 2023-06-28)
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      The integration of large size Ultra High Bypass Ratio (UHBR) engines introduces new restrictions of space for their integration with the aircraft wing. Under this scenario, a reduction of the size of the bleed air system ...

    • Analysis of high-order interpolation schemes for solving linear problems in unstructured meshes using the finite volume method 

      Castrillo Green, Pablo; Schillaci, Eugenio; Rigola Serrano, Joaquim (Scipedia, 2022)
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      Finite-volume strategies in fluid-structure interaction problems would be of crucialvimportance in many engineering applications such as in the analysis of reed valves in reciprocating compressors. The efficient implementation ...

    • Calibration of the 0D model of an air ejector by means of compressible RANS simulations 

      Schillaci, Eugenio; Oliet Casasayas, Carles; Vemula, Jagadish Babu; Duponcheel, Matthieu; Bartosiewicz, Yann (Begell House, 2023)
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      This work analyzes the need to perform a series of CFD simulations in order to calibrate 0D ejector models. The proposed case study consists in the analysis of a supersonic air ejector used in the aeronautical field to ...

    • Combustion and air flows simulations of an industrial kiln for sanitary ware manufacture 

      Liu, Jiannan; Ruano Pérez, Jesús; Schillaci, Eugenio; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (Begell House, 2023)
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      The implementation of green hydrogen as fuel in industrial kilns, such as those required in ceramic ware manufacturing processes, would be a disruptive milestone in the decarbonization process of the energyintensive industry. ...

    • Direct numerical simulation of multiphase flows with unstable interfaces 

      Schillaci, Eugenio; Lehmkuhl Barba, Oriol; Antepara Zambrano, Óscar; Oliva Llena, Asensio (Institute of Physics (IOP), 2016-09-01)
      Article
      Accés obert
      This paper presents a numerical model that intends to simulate efficiently the surface instability that arise in multiphase flows, typically liquid-gas, both for laminar or turbulent regimes. The model is developed on the ...

    • DNS and RANS simulations of a coil heat exchanger immersed in a tank 

      Vera i Fernández, Jordi; Torras Ortiz, Santiago; Schillaci, Eugenio; Oliva Llena, Asensio (Begell House, 2023)
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      The operation of heat exchangers in a thermal system can be described by simple heat transfer equations. The heat exchange is normally defined by a global heat transfer coefficient, which takes into account internal and ...

    • DNS of multiphase flows: study of atomization and free-surface phenomena 

      Schillaci, Eugenio (Universitat Politècnica de Catalunya, 2017-12-11)
      Tesi
      Accés obert
      The present thesis focuses on the numerical analysis of some diverse physical set-up that involve the interaction of two -or three immiscible and incompressible phases. The simulations are carried out by means of finite-volume ...

    • Effectiveness of adaptive mesh refinement strategies in the DNS of multiphase flows 

      Schillaci, Eugenio; Antepara Zambrano, Óscar; Lehmkuhl Barba, Oriol; Balcázar Arciniega, Néstor; Oliva Llena, Asensio (Begell House, 2015)
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      In this work, a finite-volume Adaptive Mesh Refinement (AMR) method for two phase flows able to dynamically achive the required mesh size in specific parts of the domain has been developed. The Navier-Stokes equations for ...

    • Evaluation of the Lubrication Regime for Rotary Compressors. Influence of Thermal Expansions on the Minimum Film Thickness. 

      Vera i Fernández, Jordi; Schillaci, Eugenio; Rigola Serrano, Joaquim (Purdue University, 2022)
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      In this work, the lubrication regime of a rotary compressor is studied in the regions of the roller, cylinder, shaft, and bearings. A code is programmed so it can solve multiple cases with different suction-discharge ...

    • Experimental and numerical analysis of reed valve movement in an impact fatigue test system and reciprocating compressors 

      Tofique, Muhammad Waqas; Löf, Alexander; Schillaci, Eugenio; Castrillo Green, Pablo; Rigola Serrano, Joaquim (Purdue University, 2021)
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      During operation of a reciprocating compressor, its flapper valve opens to allow the passage of gases and closes by striking against the valve impact plate. This reed valve movement and impact is repeated billions of times. ...

    • Experimental investigation and modelling of heat transfer characteristics of electrical insulation systems in electric motors for heavy-duty vehicles 

      Roozbahani, Mohammad; Schillaci, Eugenio; Thibblin, Anders; Rigola Serrano, Joaquim; Lemoine, Fabrice; Demaie, Heathcliff (Begell House, 2023)
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      Efficient heat dissipation is required in electric motors to prolong the durability of materials, especially in heavy duty vehicles where thermal generation is particularly intense. In this work, several General Purpose ...