Exploració per autor "Pérez Segarra, Carlos David"
Ara es mostren els items 2-21 de 153
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A coupled LSVOF-adaptive mesh refinement-moving mesh technique to study complex multiphase problems
Amani, Ahmad; Pérez Segarra, Carlos David; Oliva Llena, Asensio (Begell House, 2023)
Comunicació de congrés
Accés restringit per política de l'editorialThe Piecewise-Linear-Interface-Calculation (PLIC) reconstruction algorithm in the Volume-of-Fluid (VOF) method is widely used in numerical simulations of interfacial flows across various fields. However, a significant ... -
A dynamic load balancing method for the evaluation of chemical reaction rates in parallel combustion simulations
Muela Castro, Jordi; Borrell Pol, Ricard; Ventosa Molina, Jordi; Jofre Roca, Lluís; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David (Elsevier, 2019-08-15)
Article
Accés obertThe development and assessment of an efficient parallelization method for the evaluation of reaction rates in combustion simulations is presented. Combustion simulations where the finite-rate chemistry model is employed ... -
A dynamic wall model for large eddy simulation on unstructured meshes. Application to wind turbine dedicated airfoils
Calafell Sandiumenge, Joan; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio; Pérez Segarra, Carlos David (Begell House, 2015)
Text en actes de congrés
Accés restringit per política de l'editorialLarge eddy simulations (LES) of wall resolved flows at high Reynolds number are still computation-ally demanding. In the present work, a new Dynamic Wall Model (DWM) for LES is presented. The methodology, implemented on ... -
A filtered kinetic energy preserving finite volumes scheme for compressible flows
Baez Vidal, Aleix; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2012)
Text en actes de congrés
Accés obertThe Kinetic Energy Preserving Scheme (KEP) for compressible flows has been shown to solve 1-D shock waves without smearing them. The method does not add numerical diffusion to solutions but, as a counterpart, it needs ... -
A finite volume method to solve the frost growth using dynamic meshes
Bartrons Casademont, Eduard; Oliet Casasayas, Carles; Gutiérrez Álvarez, Enrique; Naseri, Alireza; Pérez Segarra, Carlos David (2018-09-01)
Article
Accés obertThe physical mechanisms of frost formation have been widely studied, yet much empirism is still needed in numerical approaches. Indeed, accurate simulations of frost growth can be reached by setting up a specific combination ... -
A fluid-structure interaction solver for the fluid flow through reed type valves
González Acedo, Ignacio; Naseri, Alireza; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David; Oliva Llena, Asensio (Institute of Physics (IOP), 2017)
Comunicació de congrés
Accés obertSuction and discharge processes with self actuated valves have a major influence in efficiency and reliability of hermetic reciprocating compressors. Understanding the operation completely in order to enhance compressor's ... -
A load balancing method for parallel genetic CFD optimizations
Aizpurua Udabe, Imanol; Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2015)
Text en actes de congrés
Accés restringit per política de l'editorialCFD optimizations are characterized by long and highly variable objective function evaluation times. The aim of this study is to improve the parallel performance using a new load balancing master-worker parallelization ... -
A method for fluid-structure interaction problems with non-Newtonian fluid
Amani, Ahmad; Naseri, Alireza; Pérez Segarra, Carlos David; Oliva Llena, Asensio (International Centre for Numerical Methods in Engineering (CIMNE), 2018)
Comunicació de congrés
Accés restringit per política de l'editorialThis paper represents a numerical method to solve fluid-structure interaction (FSI) problems where the fluid exhibits a non-Newtonian Viscoelastic behaviour. Oldroyd-B constitutive equation is used to model Viscoelastic fluid. ... -
A methodology for determining optimum solar tower plant configurations and operating strategies to maximize profits based on hourly electricity market prices and tariffs
Guedez, Rafael; Topel, Monica; Conde, Ines; Ferragut, Francisco; Callaba, Irene; Spelling, James; Hassar, Zhor; Pérez Segarra, Carlos David; Laumert, Bjorn (2016-04-01)
Article
Accés restringit per política de l'editorialThe present study analyzes the influence that market conditions have on determining optimum molten salt solar tower plants with storage that maximizes profits (in terms of plant configuration, sizing, and operation) for a ... -
A new statistical model for subgrid dispersion in large eddy simulations of particle-laden flows
Muela Castro, Jordi; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Oliva Llena, Asensio (Institute of Physics (IOP), 2016)
Text en actes de congrés
Accés obertDispersed multiphase turbulent flows are present in many industrial and commercial applications like internal combustion engines, turbofans, dispersion of contaminants, steam turbines, etc. Therefore, there is a clear interest ... -
A new thermocline-PCM thermal storage concept for CSP plants. Numerical analysis and perspectives
Galione Klot, Pedro Andrés; Pérez Segarra, Carlos David; Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim (2013)
Text en actes de congrés
Accés obertThermocline storage concept has been considered for more than a decade as a possible solution to reduce the huge cost of the storage system in CSP plants. However, one of the drawbacks of this concept is the decrease in ... -
A numerical study on turbulent flow in an Inertial Particle Separator device
Bahramian, Linda; Amani, Ahmad; Rigola Serrano, Joaquim; Oliet Casasayas, Carles; Pérez Segarra, Carlos David (2023)
Text en actes de congrés
Accés restringit per política de l'editorialAn Inertia Particle Separator (IPS) is a device situated in the intake of the aircraft to remove particles from entering the engine; consisting of two types of outlets: core and scavenge. This work presents the numerical ... -
A parallel three-dimensional radial basis function interpolation method for unstructured dynamic meshes
Estruch Pérez, Olga; Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Pérez Segarra, Carlos David (2011)
Comunicació de congrés
Accés obertA radial basis function (RBF) interpolation method is implemented to be applied in computational fluid dynamics (CFD) problems with dynamic meshes. It is compared with the classic springs analogy smoothing, focusing on the ... -
A scalable framework for the partitioned solution of fluid-structure interaction problems
Naseri, Alireza; Totounferoush, Amin; González Acedo, Ignacio; Mehl, Miriam; Pérez Segarra, Carlos David (Springer, 2020-08)
Article
Accés obertIn this work, we present a scalable and efficient parallel solver for the partitioned solution of fluid–structure interaction problems through multi-code coupling. Two instances of an in-house parallel software, TermoFluids, ... -
A second-order time accurate semi-implicit method for fluid–structure interaction problems
Naseri, Alireza; González Acedo, Ignacio; Amani, Ahmad; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2019-04-01)
Article
Accés obertThis paper is concerned with numerical solution of fluid-structure inter-action (FSI) problems involving an incompressible viscous flow and an elasticstructure. A semi-implicit partitioned method with second-order ... -
A semi-implicit coupling technique for fluid–structure interaction problems with strong added-mass effect
Naseri, Alireza; Lehmkuhl Barba, Oriol; González Acedo, Ignacio; Bartrons Casademont, Eduard; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2018-07-01)
Article
Accés obertThis paper is concerned with the numerical simulation of fluid–structure interaction problems involving an incompressible viscous flow and an elastic structure. A semi-implicit coupling technique is presented which strongly ... -
A simple optimization approach for the insulation thickness distribution in household refrigerators
Trias Miquel, Francesc Xavier; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (Elsevier, 2018-09)
Article
Accés obertDetermination of the optimal insulation thickness is of great relevance in many thermal engineering applications. In this paper, a simple optimization strategy based on the Lagrange multipliers is presented. The optimal ... -
Advanced analysis of thermal energy storage in CSP plants
Pérez Segarra, Carlos David; González Acedo, Ignacio; Torras Ortiz, Santiago; Rigola Serrano, Joaquim; Oliva Llena, Asensio (2016-11-24)
Report de recerca
Accés obert -
An efficient strategy of parcel modeling for polydispersed multiphase turbulent flows
Bahramian, Linda; Muela Castro, Jordi; Oliet Casasayas, Carles; Pérez Segarra, Carlos David; Trias Miquel, Francesc Xavier (Scipedia, 2022)
Text en actes de congrés
Accés obertA three-dimensional particle-laden two-phase turbulent flow by employing the Eulerian-Lagrangian method using multiphase Particle-In-Cell model is implemented to analyze the effects of parcel modeling. In order to achieve ... -
An energy-preserving unconditionally stable fractional step method on collocated grids
Santos Serrano, Daniel; Trias Miquel, Francesc Xavier; Colomer Rey, Guillem; Pérez Segarra, Carlos David (Scipedia, 2022)
Text en actes de congrés
Accés obertPreservation of energy is fundamental in order to avoid the introduction of unphysical energy that can lead to unstable simulations. In this work, an energy-preserving unconditionally stable fractional step method on ...