Results 41 to 50 of about 25,672 (196)

Turbulence impacts synthetic methanol production in a square duct flow: a direct numerical simulation (DNS) study

, 2023
28 pages, 11 ...
Korhonen, Marko, Izbassarov, Daulet, Nyári, Judit, Santasalo-Aarnio, Annukka, Vuorinen, Ville   +4 more
openaire   +2 more sources

Direct Numerical Simulation of Packed and Monolith Syngas Catalytic Combustors for Micro Electrical Mechanical Systems

Energy Conversion and Management: X, 2023
Abstract In this work, a catalytic combustor for micro electrical mechanical system for syngas was designed and analysed using Direct Numerical Simulation (DNS) in conjunction with finite rate chemistry. The effect of catalyst (platinum (Pt), palladium (Pd), palladium oxide (PdO), and rhodium (Rh)), bed type (packed with twelve catalyst
Bazooyar, Bahamin, Zhu, Mingming, Manovic, Vasilije, Nabavi, Seyed Ali   +3 more
openaire   +5 more sources

Reduced Model for Properties of Multiscale Porous Media with Changing Geometry

Computation, 2021
In this paper, we consider an important problem for modeling complex coupled phenomena in porous media at multiple scales. In particular, we consider flow and transport in the void space between the pores when the pore space is altered by new solid ...
Malgorzata Peszynska, Joseph Umhoefer, Choah Shin   +2 more
doaj   +1 more source

Fast Numerical simulations of 2D turbulence using a dynamic model for Subgrid Motions [PDF]

, 2001
We present numerical simulation of 2D turbulent flow using a new model for the subgrid scales which are computed using a dynamic equation linking the subgrid scales with the resolved velocity.
B. Dubrulle, Babiano, Babiano, Bartello, Berger, Berger, Brachet, Dubrulle, Dubrulle, Dubrulle, Farge, Farge, Grossmann, J.-P. Laval, Laval, Laval, Laval, Laval, Leonard, Mariotti, Meneguzzi, Nazarenko, Nazarenko, Nazarenko, Nazarenko, Oberlack, S.V. Nazarenko, Sadourny, Schneider, Werne   +29 more
core   +3 more sources

DNS Dataset of a Thick Symmetric Airfoil at Low Reynolds Number: NACA 0018 with LES Comparison [PDF]

Journal of Applied Fluid Mechanics
This study examines the aerodynamic behavior of the symmetric National Advisory Committee for Aeronautics (NACA) 0018 airfoil at a chord-based Reynolds number of 30,000, utilizing Direct Numerical Simulation (DNS) as the primary tool, supplemented by ...
K. Rogowski, S. Kubacki, J. Michna
doaj   +1 more source

Rethinking materials simulations: Blending direct numerical simulations with neural operators

npj Computational Materials
Materials simulations based on direct numerical solvers are accurate but computationally expensive for predicting materials evolution across length- and time-scales, due to the complexity of the underlying evolution equations, the nature of multiscale ...
Vivek Oommen, Khemraj Shukla, Saaketh Desai, Rémi Dingreville, George Em Karniadakis   +4 more
doaj   +1 more source

Spatial clustering of polydisperse inertial particles in turbulence: II. Comparing simulation with experiment

New Journal of Physics, 2012
Particles that are heavy compared to the fluid in which they are embedded (inertial particles) tend to cluster in turbulent flow, with the degree of clustering depending on the particle Stokes number. The phenomenon is relevant to a variety of multiphase
Ewe-Wei Saw, Raymond A Shaw, Juan P L C Salazar, Lance R Collins   +3 more
doaj   +1 more source

Spatiotemporal Intermittency in Pulsatile Pipe Flow

Entropy, 2020
Despite its importance in cardiovascular diseases and engineering applications, turbulence in pulsatile pipe flow remains little comprehended. Important advances have been made in the recent years in understanding the transition to turbulence in such ...
Daniel Feldmann, Daniel Morón, Marc Avila   +2 more
doaj   +1 more source

Scalability of Nek5000 on High-Performance Computing Clusters Toward Direct Numerical Simulation of Molten Pool Convection

Frontiers in Energy Research, 2022
In a postulated severe accident, a molten pool with decay heat can form in the lower head of a reactor pressure vessel, threatening the vessel’s structural integrity.
Boshen Bian, Jing Gong, Walter Villanueva   +2 more
doaj   +1 more source

Direct numerical simulation of turbulence on a Connection Machine CM-5 [PDF]

, 1995
In this paper we report on our first experiences with direct numerical simulation of turbulent flow on a 16-node Connection Machine CM-5. The CM-5 has been programmed at a global level using data parallel Fortran.
A.E.P. Veldman, Demmel, Dongarra, Eisenstat, Gustafson, Harlow, Peterson, R.W.C.P. Verstappen, Reynolds, Verstappen   +9 more
core   +4 more sources