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Ara es mostren els items 56-75 de 168

    • Effect of hydrogen addition to methane-air jet flame based on Sandia flame D 

      Liu, Jinglong; Pérez Segarra, Carlos David; Rigola Serrano, Joaquim; Trias Miquel, Francesc Xavier (Scipedia, 2022)
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      The present study investigates the effect of hydrogen addition to methane-air jet flame based on Sandia flame D. For this purpose, RANS simulations with a global four-step mechanism were first compared with other reduced ...

    • Energy efficiency in buildings: dynamic numerical simulation and application to retroffiting edification 

      Rigola Serrano, Joaquim; Capdevila Paramio, Roser; López Mas, Joan; Kizildag, Deniz; Castro González, Jesús; Pérez Segarra, Carlos David (2016-11-24)
      Report de recerca
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    • Energy simulation of a single family dwelling as a test bench for climate control system assessment 

      Capdevila Paramio, Roser; Souaihi, Oussama; Lopez, Joan; Rigola Serrano, Joaquim; Lehmkuhl Barba, Oriol; Oliva Llena, Asensio (2016)
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      In the present work a real dwelling (a semi-detached house in the Netherlands) has been modelled with an in-house modular object-oriented building simulation tool, called NEST-Buildings. This software models the whole ...

    • Energy simulation of a single family dwelling with a modular object-oriented tool 

      Capdevila Paramio, Roser; Chiva Segura, Jorge; López Mas, Joan; Rigola Serrano, Joaquim; Lehmkuhl Barba, Oriol (2015)
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    • Evaluation of enhanced gray area mitigation approaches based on jet aeroacoustics 

      Duben, Alexey; Ruano Pérez, Jesús; Gorobets, Andrei; Rigola Serrano, Joaquim; Trias Miquel, Francesc Xavier (2023-02)
      Article
      Accés obert
      An investigation of various eddy viscosity models for accurate scale-resolving simulation of aerodynamics and aeroacoustics of a turbulent jet is presented. The models are considered from the perspective of solving the ...

    • 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 Analysis of a Draft Beer Ice Bank Machine 

      Torras, Santiago; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (Purdue University, 2021)
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      In a long-term established application as draft beer cooling and servicing machines, seems difficult to see any research application at first sight. However, this perspective change when one considers that the costs ...

    • Experimental analysis of no-frost domestic refrigerator evaporators 

      Oliet Casasayas, Carles; Pérez Segarra, Carlos David; Oliva Llena, Asensio; Rigola Serrano, Joaquim (2011)
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      The air-to-refrigerant evaporator placed in no-frost refrigerators is a critical component because of its simultaneous treatment of both cooler and freezer air streams, which implies a strong drying process on the cooler ...

    • 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 and numerical study of the dynamic behavior of an air to water heat pump 

      Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Aizpurua Udabe, Imanol; Oliet Casasayas, Carles; Rigola Serrano, Joaquim (Phetradico Communication and Publishing, 2017)
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      This work is focused on studying the dynamic behavior of an air to water heat pump both experimentally and numerically. The system consists of a conventional heat pump cycle (compressor, condenser, capillary tube and ...

    • 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 ...

    • First test field performance of highly efficient flat plate solar collectors with transparent insulation and low-cost overheating protection 

      Kizildag, Deniz; Castro González, Jesús; Kessentini, Hamdi; Schillaci, Eugenio; Rigola Serrano, Joaquim (2022-04)
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      The present work demonstrates prototypes of highly efficient flat plate solar thermal collectors prototypes based on transparent insulation materials (TIM) technology for efficiency improvement and an overheating protection ...

    • Fixed-grid numerical modeling of melting and solidification using variable thermo-physical properties - Application to the melting of n-Octadecane inside a spherical capsule 

      Galione Klot, Pedro Andrés; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2015-07-01)
      Article
      Accés obert
      A fixed-grid enthalpy model for unstructured meshes and explicit time integration schemes (Galione et al., 2014) is here extended for taking into account the change in density and other thermo-physical properties with the ...

    • Fluid-structure interaction of a reed type valve 

      González Acedo, Ignacio; Lehmkuhl Barba, Oriol; Naseri, Alireza; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Purdue University, 2016)
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      This paper presents a complete numerical procedure to study the fluid-structure interaction problem of incompressible flow through reed valves, typically employed in hermetic reciprocating compressors. A partitioned ...

    • Full numerical simulation of an object oriented program for hermetic reciprocating compressors: numerical verification and experimental validation. 

      Lehmkuhl Barba, Oriol; Mohan Damle, Rashmin; Rigola Serrano, Joaquim; López Mas, Joan (2010)
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      An object oriented approach of the numerical simulation model for the thermal and fluid dynamic behavior of hermetic reciprocating compressors was previously presented (Damle, et al., 2008), describing the fluid flow resolution ...

    • Gravity-driven motion of a swarm of bubbles in a vertical pipe 

      Balcázar Arciniega, Néstor; Lehmkuhl Barba, Oriol; Castro González, Jesús; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2015)
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      In this work, Direct Numerical Simulations of gravity-driven motion of a swarm of bubbles in a vertical pipe are presented. These simulations were carried out in the contex of a multiple marker level-set methodology, which ...

    • Heat Exchanger Surrogates for a Vapor Compression System 

      Loka, Nasrulloh Ratu Bagus Satrio; Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Gurumurthy, Sriram; Monti, A.; Rigola Serrano, Joaquim; Oliet Casasayas, Carles; Couckuyt, Ivo; Dhaene, Tom (Linköping University, 2023)
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      Given the computationally intensive nature of heat exchanger simulators, utilizing a data-driven surrogate model for efficiently computing the heat exchanger outputs is desirable. This study focuses on developing integrated ...

    • Heat exchangers modelling and calibration for complete ECS architectures simulations 

      Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Oliet Casasayas, Carles; Rigola Serrano, Joaquim (European Conference for AeroSpace Sciences (EUCASS), 2022)
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      The aeronautical industry is currently designing new Environmental Control System (ECS) architectures based on the More Electrical Aircraft (MEA) concept in order to improve the energy consumption efficiency inside commercial ...

    • High-order cell-centered finite volume method for solid dynamics on unstructured meshes 

      Castrillo Green, Pablo; Schillaci, Eugenio; Rigola Serrano, Joaquim (Elsevier, 2024-05-01)
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      This paper introduces a high-order finite volume method for solving solid dynamics problems on three-dimensional unstructured meshes. The method is based on truncated Taylor series constructed about each control volume ...

    • High-order finite volume method for linear elasticity on unstructured meshes 

      Castrillo Green, Pablo; Canelas, Alfredo; Schillaci, Eugenio; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2022-08-01)
      Article
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      This paper presents a high-order finite volume method for solving linear elasticity problems on two-dimensional unstructured meshes. The method is designed to increase the effectiveness of finite volume methods in solving ...