Browsing by Author "Rodríguez Pérez, Ivette María"
Now showing items 1-20 of 97
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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)
Conference report
Restricted access - publisher's policyLarge 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 low-dissipation finite element scheme for scale resolving simulations of turbulent flows
Lehmkuhl Barba, Oriol; Houzeaux, Guillaume; Owen, Herbert; Chrysokentis, Giorgios; Rodríguez Pérez, Ivette María (2019-08-01)
Article
Open AccessThe present work extends the conservative convective scheme proposed by Charnyi et al. (2017) [13], originally formulated for mixed finite elements and tested in laminar flows, to equal order finite elements. A non-incremental ... -
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)
Conference report
Open AccessThermocline 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 review study on the modeling of high-temperature solar thermal collector systems
Hachicha, Ahmed A.; Yousef, Bashria A.A.; Said, Zafar; Rodríguez Pérez, Ivette María (2019-09-01)
Article
Open AccessConcentrated solar power technologies are gaining more attention in the last two decades in order to replace the conventional power technologies and reduce their environmental impact. Among the developed concentrating ... -
Active flow control for external aerodynamics: from micro air vehicles to a full aircraft in stall
Lehmkuhl Barba, Oriol; Lozano-Durán, Adrian; Rodríguez Pérez, Ivette María (Institute of Physics (IOP), 2020-04-01)
Article
Open AccessWe investigate the aerodynamic performance of active flow control of airfoils and wings using synthetic jets with zero net-mass flow. The study is conducted via wall-resolved and wall-modeled large-eddy simulation using ... -
Active flow control of an aircraft in full stall
Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Lozano-Durán, Adrian (2021)
Conference report
Open AccessThe aerodynamic performance of active flow control on wings using synthetic jets with zero net-mass flow is investigated. The study is conducted via wall-modeled large-eddy simulations using a finiteelement-based solver. ... -
Active flow control on SD7003 airfoil using synthetic jets
Tousi, Navid Monshi; Bergadà Granyó, Josep Maria; Rodríguez Pérez, Ivette María (2019)
Conference report
Restricted access - publisher's policyThe present paper focuses on applying the Active Flow Control (AFC) technology on the Selig-Donovan 7003 (SD7003) airfoil at Reynolds number 60,000, the idea is to employ synthetic jets in order to modify the lift and drag ... -
Analyzing the performance of a miniature 3D wind sensor for Mars
Domínguez Pumar, Manuel; Kowalski, Lukasz; Jiménez Serres, Vicente; Rodríguez Pérez, Ivette María; Soria Guerrero, Manel; Bermejo Broto, Sandra; Pons Nin, Joan (Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-20)
Article
Open AccessThis paper analyzes the behavior of a miniature 3D wind sensor designed for Mars atmosphere. The sensor is a spherical structure of 10 mm diameter divided in four sectors. By setting all the sectors to constant temperature, ... -
Assessment of the symmetry-preserving regularization model on complex flows using unstructured grids
Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Rodríguez Pérez, Ivette María; Pérez Segarra, Carlos David; Oliva Llena, Asensio (2012-05-15)
Article
Restricted access - publisher's policyThe main objective of the present paper is the assessment of symmetry-preserving regularization models on unstructured meshes. Three different test cases have been studied: the impinging jet flow, the flow past a circular ... -
Boundary layer flow control using synthetic jets on the flow over a NACA 0012 airfoil
Duran, David; Rodríguez Pérez, Ivette María; Soria Guerrero, Manel; Lehmkuhl Barba, Oriol (2017)
Conference report
Restricted access - publisher's policyNumerical simulations of the flow control using a synthetic jet are presented. The flow considered is around a NACA 0012 airfoil at Re = 5000 and the actuator is located at 6% of the chord from the leading edge. This work ... -
Characteristics of the near wake region behind a cylinder at critical and super-critical Reynolds numbers
Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Chiva Segura, Jorge; Borrell Pol, Ricard; Oliva Llena, Asensio (Begell House, 2015)
Conference report
Restricted access - publisher's policyLarge-eddy simulations (LES) of the flow past a circular cylinder are used to investigate the characteristics of the near wake region at Reynolds numbers Re = 2.5 × 105 - 8.5 × 105. This range encompasses both the critical ... -
Coherent structures in a flow past a circular cylinder at critical and super-critical Reynolds numbers
Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Chiva Segura, Jorge; Borrell Pol, Ricard; Oliva Llena, Asensio (Springer, 2015)
Conference report
Restricted access - publisher's policyIt is well known that the wake topology in the flow past a circular cylinder remains almost unchanged up to Reynolds number ~105 Williamson (Annu Rev Fluid Mech 28(1), 477–539 (1996)) [1]. Then, at Re~2×105 major changes ... -
Comparison of the performance of falling film and bubble absorbers for air-cooled absorption systems
Castro González, Jesús; Oliet Casasayas, Carles; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio (2009-07-01)
Article
Open AccessSmall capacity, air-cooled NH3–H2O absorption systems are becoming more attractive in applications where the input energy can be obtained for free (e.g., solar energy, exhaust gases of engines, etc.), due to the increasing ... -
Coupling CFD models of airflow with building simulation with an object-oriented and parallel infrastructure
Damle, Rashmin; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio (2012)
Conference report
Restricted access - publisher's policyIntegrating CFD & HT models with the general building program raises the computational time of building simulations as these simulations are usually performed over a period of one year. Within this context, our aim is ... -
Detailed numerical model for the resolution of molten salt storage tanks for CSP plants
Pérez Segarra, Carlos David; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio; Torras Ortíz, Santiago; Lehmkuhl Barba, Oriol (2012)
Conference report
Open AccessConsidering the state-of-the-art in TES technologies, two-tank indirect system using molten salt is the most widespread within CSP plants. However, current techniques for design and optimization, as well as, for assessing ... -
Development of a multi-functional ventilated façade with an integrated collector-storage: numerical model and experimental facility
Kizildag, Deniz; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio (2011)
Conference report
Open AccessThe paper reports on physical modeling and experimental evaluation of glazed systems. A multi-functional ventilated façade with an integrated collector-storage is developed and mounted on a test cell facility under real ... -
Direct and large eddy simulations of non-Oberbeck-Boussinesq effects in a turbulent tall water-filled differentially heated cavity
Kizildag, Deniz; Rodríguez Pérez, Ivette María; Trias Miquel, Francesc Xavier; Oliva Llena, Asensio (2015)
Conference report
Restricted access - publisher's policyThe present work first submits to investigation the non-Oberbeck-Boussinesq (NOB) effects in a tall water-filled differentially heated cavity by means of direct numerical simulations. The results reveal that if NOB effects ... -
Direct and large-eddy simulation of non-oberbeck-boussinesq effects in a turbulent differentially heated cavity
Kizildag, Deniz; Trias Miquel, Francesc Xavier; Rodríguez Pérez, Ivette María; Oliva Llena, Asensio (Springer, 2013)
Conference report
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Direct numerical simulation and Large-Eddy simulations of the turbulent flow around a NACA-0012 airfoil
Lehmkuhl Barba, Oriol; Baez Vidal, Aleix; Rodríguez Pérez, Ivette María; Pérez Segarra, Carlos David (2011)
Conference report
Open AccessThis paper investigates the capabilities of two subgrid-scale (SGS) models for predicting the complex flow in transitional separated bubbles. We consider here the flow over a NACA 0012 airfoil at Reynolds number Re = 5×10 ... -
Direct numerical simulation of a NACA0012 in full stall
Rodríguez Pérez, Ivette María; Lehmkuhl Barba, Oriol; Borrell Pol, Ricard; Oliva Llena, Asensio (2013-10-15)
Article
Open AccessThis work aims at investigating the mechanisms of separation and the transition to turbulence in the separated shear-layer of aerodynamic profiles, while at the same time to gain insight into coherent structures formed ...