Assessment of Finite Rate Chemistry Large Eddy Simulation Combustion Models [0.03%]
有限速率化学大涡模拟燃烧模型的评估
E Fedina,C Fureby,G Bulat et al.
E Fedina et al.
Large Eddy Simulations (LES) of a swirl-stabilized natural gas-air flame in a laboratory gas turbine combustor is performed using six different LES combustion models to provide a head-to-head comparative study. More specifically, six finite...
The State of the Art of Hybrid RANS/LES Modeling for the Simulation of Turbulent Flows [0.03%]
当前 hybrid RANS/LES 模型用于湍流模拟的研究进展
Bruno Chaouat
Bruno Chaouat
This review presents the state of the art of hybrid RANS/LES modeling for the simulation of turbulent flows. After recalling the modeling used in RANS and LES methodologies, we propose in a first step a theoretical formalism developed in th...
A N Lipatnikov,W Y Li,L J Jiang et al.
A N Lipatnikov et al.
In order to experimentally study whether or not the density ratio σ substantially affects flame displacement speed at low and moderate turbulent intensities, two stoichiometric methane/oxygen/nitrogen mixtures characterized by the same lam...
Direct Numerical Simulations of Hotspot-induced Ignition in Homogeneous Hydrogen-air Pre-mixtures and Ignition Spot Tracking [0.03%]
均匀氢气和空气预混物中热点诱发点火的直接数值模拟及点火前沿追踪研究
Cheng Chi,Abouelmagd Abdelsamie,Dominique Thévenin
Cheng Chi
A systematic study relying on Direct Numerical Simulations (DNS) of premixed hydrogen-air mixtures has been performed to investigate the hotspot ignition characteristics and ignition probability under turbulent conditions. An ignition diagr...
Numerical Simulation of a Passive Control of the Flow Around an Aerofoil Using a Flexible, Self Adaptive Flaplet [0.03%]
采用柔性自适应副翼的机翼绕流被动控制数值模拟研究
Marco E Rosti,Mohammad Omidyeganeh,Alfredo Pinelli
Marco E Rosti
Self-activated feathers are used by almost all birds to adapt their wing characteristics to delay stall or to moderate its adverse effects (e.g., during landing or sudden increase in angle of attack due to gusts). Some of the feathers are b...
Plasma Streamwise Vortex Generators for Flow Separation Control on Trucks: A Proof-of-concept Experiment [0.03%]
用于卡车的流动分离控制的等离子体流向旋涡发生器：概念性实验证明
Julie A Vernet,Ramis Örlü,David Söderblom et al.
Julie A Vernet et al.
An experimental study of the effect of Dielectric Barrier Discharge plasma actuators on the flow separation on the A-pillar of a modern truck under cross-wind conditions has been carried out. The experiments were done in a wind tunnel with ...
Experimental Control of Turbulent Boundary Layers with In-plane Travelling Waves [0.03%]
平面行进波对湍流边界层的控制实验研究
James Bird,Matthew Santer,Jonathan F Morrison
James Bird
The experimental control of turbulent boundary layers using streamwise travelling waves of spanwise wall velocity, produced using a novel active surface, is outlined in this paper. The innovative surface comprises a pneumatically actuated c...
G Gómez-de-Segura,A Sharma,R García-Mayoral
G Gómez-de-Segura
The behaviour of turbulent flow over anisotropic permeable substrates is studied using linear stability analysis and direct numerical simulations (DNS). The flow within the permeable substrate is modelled using the Brinkman equation, which ...
Somayeh Ahmadi,Alessio Roccon,Francesco Zonta et al.
Somayeh Ahmadi et al.
In this work we study the turbulence modulation in a viscosity-stratified two-phase flow using Direct Numerical Simulation (DNS) of turbulence and the Phase Field Method (PFM) to simulate the interfacial phenomena. Specifically we consider ...
Spectral Analysis of the Slip-Length Model for Turbulence over Textured Superhydrophobic Surfaces [0.03%]
分段滑移长度模型的谱分析
C T Fairhall,R García-Mayoral
C T Fairhall
We assess the applicability of slip-length models to represent textured superhydrophobic surfaces. From the results of direct numerical simulations, and by considering the slip length from a spectral perspective, we discriminate between the...