Browsing by Author "Mira, Daniel"
Now showing items 1-20 of 23
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A molecular simulation study on transport properties of FAMEs in high-pressure conditions
Chen, Cheng; Mira, Daniel; Jiang, Xi (Elsevier, 2022)
Article
Restricted access - publisher's policyTransport property prediction of fatty acid methyl esters (FAMEs) is essential to its utilisation as biodiesel and biolubricant which can work under high-pressure conditions. Equilibrium molecular simulation is performed ... -
Alya: Multiphysics engineering simulation toward exascale
Vázquez, Mariano; Houzeaux, Guillaume; Koric, Seid; Artigues, Antoni; Aguado Sierra, Jazmin; Arís Sánchez, Ruth; Mira, Daniel; Calmet, Hadrien; Cucchietti, Fernando; Owen, Herbert; Taha, Ahmed; Dering Burness, Evan; Cela Espín, José M.; Valero Cortés, Mateo (Elsevier, 2016-05)
Article
Open AccessAlya is a multi-physics simulation code developed at Barcelona Supercomputing Center (BSC). From its inception Alya code is designed using advanced High Performance Computing programming techniques to solve coupled problems ... -
Alya: Multiphysics engineering simulation toward exascale
Vázquez, Mariano; Houzeaux, Guillaume; Koric, Seid; Artigues, Antoni; Aguado-Sierra, Jazmin; Arís, Ruth; Mira, Daniel; Calmet, Hadrien; Cucchietti, Fernando; Owen, Herbert; Taha, Ahmed; Burness, Evan D.; Cela, José M.; Valero Cortés, Mateo (Elsevier, 2016-02-01)
Article
Open AccessAlya is a multi-physics simulation code developed at Barcelona Supercomputing Center (BSC). From its inception Alya code is designed using advanced High Performance Computing programming techniques to solve coupled problems ... -
An extended flame index partitioning for partially premixed combustion
Illana, Enric; Mira, Daniel; Mura, Arnaud (Taylor and Francis, 2020)
Article
Open AccessCompared to partially premixed combustion (or combustion of non-homogeneous reactants in general), fully premixed and diffusion flames represent only two asymptotic limits of combustion modes. However, the deep knowledge ... -
Analysis of local extinction of a n-heptane spray flame using large-eddy simulation with tabulated chemistry
Benajes, Jesús V.; García Oliver, José M; Pastor, José Manuel; Olmeda, I; Both, Ambrus; Mira, Daniel (Elsevier, 2021)
Article
Restricted access - publisher's policyThis work is focused on the study of flame stabilization and local extinction of a spray flame in an atmospheric non-swirled test rig referred to as the CORIA Rouen Spray Burner. This burner shows a double reaction front ... -
Assessment of chemistry reduction in high-pressure spray flames of oxymethylene ethers using large-eddy simulations
Mira, Daniel; Surapaneni, Anurag; Pérez, Eduardo; Both, Ambrus; Lehmkuhl Barba, Oriol; Houzeaux, Guillaume (2021)
Conference lecture
Open AccessThis study is focused on the numerical investigation of reduced chemical schemes for high pressure spray flames of oxymethylene ethers (OMEx). A reduced mechanism using Path Flux Analysis (PFA) technique is tested using ... -
Development of the conditional moment closure with a multi-code approach in the frame of Large Eddy Simulations
Pérez Sánchez, Eduardo Javier; Mira, Daniel; Lehmkuhl Barba, Oriol; Houzeaux, Guillaume (MCM, 2021)
Conference lecture
Open AccessThe Conditional Moment Closure (CMC), devised for turbulent combustion modelling, was implemented in the multiphysics code Alya, based on the Finite Element Method (FEM), in the frame of Large Eddy Simulations (LES) for ... -
Evaporation of volatile droplets subjected to flame-like conditions
Both, Ambrus; Mira, Daniel; Lehmkuhl Barba, Oriol (Elsevier, 2022)
Article
Restricted access - publisher's policyThis work assesses Lagrangian droplet evaporation models frequently used in spray combustion simulations, with the purpose of identifying the influence of modeling decisions on the single droplet behavior. Besides more ... -
Heat loss prediction of a confined premixed jet flame using a conjugate heat transfer approach
Gövert, S.; Mira, Daniel; Zavala-Ake, M.; Kok, J.B.W.; Vázquez, Mariano; Houzeaux, Guillaume (Elsevier, 2017-04)
Article
Open AccessThe presented work addresses the investigation of the heat loss of a confined turbulent jet flame in a lab-scale combustor using a conjugate-heat transfer approach and large-eddy simulation. The analysis includes the ... -
Heat Transfer Effects on a Fully Premixed Methane Impinging Flame
Mira, Daniel; Zavala, Miguel; Avila, Matías; Owen, Herbert; Cajas García, Juan Carlos; Vázquez, Mariano; Houzeaux, Guillaume (Springer, 2016-01-09)
Article
Open AccessA numerical assessment of different thermal conditions for an impinging flame configuration is investigated using large-eddy simulation. The cases of study correspond to a turbulent methane flame at equivalence ratio ER = ... -
Large-eddy simulation of ow and combustion dynamics in a lean partially premixed swirling combustor
Li, Shaoshuai; Zheng, Yunzhe; Zhu, Min; Mira, Daniel; Jiang, Xi (Elsevier, 2015-11-06)
Article
Open AccessA lean partially premixed swirling combustor was studied by resolving the complete flow path from the swirl vanes to the chamber outlet with large-eddy simulation (LES). The flow and combustion dynamics for non-reacting ... -
LES study of the impact of fuel composition on a swirl spray flame approaching blow-off
Both, Ambrus; Mira, Daniel; Lehmkuhl Barba, Oriol (2021)
Conference lecture
Open AccessThe present paper focuses on the large eddy simulation (LES) of the n-heptane and n-dodecane flames of the Cambridge swirl flames data repository (Sidey et al., 2017). The applied tabulated chemistry spray combustion model ... -
Multi-physics methodology for phase change due to rapidly depressurised two-phase flows
Chávez Modena, Miguel; Runio, Gonzalo; Valero, Eusebio; Mira, Daniel; Lehmkuhl Barba, Oriol (Elsevier, 2021)
Article
Restricted access - publisher's policyZonal modeling is a common technique for the numerical certification of fire-extinguishing systems, however it is not valid to simulate the complex physical phenomena that occurs near the agent injection. We present a ... -
Numerical investigation of the burning characteristics of ventilation air methane in a combustion based mitigation system
Mira, Daniel; Cluff, Daniel L.; Jiang, Xi (Elsevier, 2014-10)
Article
Open AccessLarge-eddy simulation of the reacting flow field in a combustion-based mitigation system to reduce the emissions of methane contained in ventilation air methane is presented. The application is based on the preheating and ... -
Parallel mesh partitioning based on space filling curves
Borrell, Ricard; Cajas García, Juan Carlos; Mira, Daniel; Taha, A.; Koric, S.; Vázquez, Mariano; Houzeaux, Guillaume (Elsevier, 2018-09)
Article
Open AccessLarger supercomputers allow the simulation of more complex phenomena with increased accuracy. Eventually this requires finer and thus also larger geometric discretizations. In this context, and extrapolating to the Exascale ... -
Parametric and model uncertainties induced by reduced order chemical mechanisms for biogas combustion
Freitas, Rodolfo S.M; Rochinha, Fernando A.; Mira, Daniel; Jiang, Xi (Elsevier, 2020)
Article
Restricted access - publisher's policyThis study investigates the impact of chemical kinetic uncertainties on biogas combustion using a Uncertainty Quantification (UQ)-based methodology. The results indicate that the variation of physicochemical properties ... -
Saiph, a domain specific language for computational fluid dynamics simulations
Macià, Sandra; Beltran Querol, Vicenç; Mira, Daniel; Mateo, Sergi (Barcelona Supercomputing Center, 2017-05-04)
Open AccessNowadays, High-Performance Computing (HPC) is assuming an increasingly central role in scientific research while computer architectures are becoming more and more hetero-geneous and using different parallel programming ... -
Saiph: towards a DSL for high-performance computational fluid dynamics
Macià, Sandra; Mateo, Sergi; Martínez-Ferrer, Pedro J.; Beltran Querol, Vicenç; Mira, Daniel; Ayguadé Parra, Eduard (Association for Computing Machinery (ACM), 2018)
Conference report
Restricted access - publisher's policyNowadays high-performance computing is taking an increasingly central role in scientific research while computer architectures are becoming more heterogeneous and complex with different parallel programming models and ... -
Study of the Wall Thermal Condition Effect in a Lean-Premixed Downscaled Can Combustor Using Large-Eddy Simulation
Mira, Daniel; Vázquez, Mariano; Houzeaux, Guillaume; Gövert, Simon; Kok, Jim W.B.; Mahiques, E.I.; Panek, Lukasz (American Society of Mechanical Engineers, 2016-06-13)
Conference lecture
Open AccessThe primary purpose of this study is to evaluate the ability of LES, with a turbulent combustion model based on steady flamelets, to predict the flame stabilization mechanisms in an industrial can combustor at full load ... -
The combustion mitigation of methane as a non-CO2 greenhouse gas
Jian, X.; Mira, Daniel; Cluff, D.L. (Elsevier, 2018-05)
Article
Open AccessAnthropogenic emissions of non-CO2 greenhouse gases such as fugitive methane contribute significantly to global warming. A review of fugitive methane combustion mitigation and utilisation technologies, which are primarily ...