Lars Davidson

Physics informed data-driven near-wall modelling for lattice Boltzmann simulation of high Reynolds number turbulent flows

A pressure-loss model for flow-through round-hole perforated plates of moderate porosity and thickness in laminar and turbulent flow regimes

Seamless Interface Methods for Grey-Area Mitigation in Scale-Resolving Hybrid RANS-LES

A fluid flow model for the pressure loss through perforated plates

2023

2D CFD simulations of flow and reaction during carbon dioxide methanation: A spatially resolved channel plate reactor study

Synthetic turbulence generator for the wall-modeled LES lattice Boltzmann method

2023

Comparative analysis of single and multiphase numerical frameworks for subcooled boiling flow in an internal combustion engine coolant jacket

2023

Investigation of low-dissipation low-dispersion schemes for incompressible and compressible flows in scale-resolving simulations

Forecasting of Day-Ahead Wind Speed/electric Power by Using a Hybrid Machine Learning Algorithm

2023

Using Machine Learning for formulating new wall functions for Detached Eddy Simulation

2023

Wall-modeled large-eddy simulation integrated with synthetic turbulence generator for mutiple-relaxation-time lattice Boltzmann method

Using Machine Learning for Improving a Non-Linear k-eps Model: A First Attempt

Numerical modeling of a wire mesh for aerodynamic noise reduction

The Day-Ahead Forecasting of the Passenger Occupancy in Public Transportation by Using Machine Learning

Assessment of Wind Field Generation Methods on Predicted Wind Turbine Power Production Using a Free Vortex Filament Wake Approach

2022

Using Machine Learning for formulating new wall functions for Large Eddy Simulation: A Second Attempt

2022

Inlet Gap Influence on Low-Frequency Flow Unsteadiness in a Centrifugal Fan

A new strategy of designing micro vortex generators to mitigate tonal noise generation from voluteless centrifugal fan

2022

Near-wall approximations to speed up simulations for atmosphere boundary layers in the presence of forests using lattice Boltzmann method on GPU

2022

Using Machine Learning for formulating new wall functions for Large Eddy Simulation: A First Attempt

Synthetic turbulence generator for lattice Boltzmann method at the interface between RANS and LES

Higher Order Gradients on Unstructured Meshes using Compact Formulation for Node-Centered Schemes

Near-wall modelling of forests for atmosphere boundary layers using lattice Boltzmann method on GPU

2022

Blade-Tip Vortex Noise Mitigation Traded-Off against Aerodynamic Design for Propellers of Future Electric Aircraft

2022

Inlet Gap Effect on Tonal Noise Generated from a Voluteless Centrifugal Fan

Investigation of Turbulence Injection Methods in Large Eddy Simulation using a Compressible Flow Solver

2022

Near-wall modeling of forests for atmosphere boundary layers using lattice Boltzmann method on GPU

2022

Inlet Effect on Tonal Noise Generated from a Voluteless Centrifugal Fan

2022

Inlet Gap Effect on Aerodynamics and Tonal Noise Generation of a Voluteless Centrifugal Fan

2021

Non-zonal detached eddy simulation coupled with a steady RANS solver in the wall region

2021

Detached Eddy Simulation coupled with steady RANS in the wall region

Closure modeling

EMD-SVR: A Hybrid Machine Learning Method to Improve the Forecasting Accuracy of Highway Tollgates Traveling Time to Improve the Road Safety

2021

Detached Eddy Simulations: Analysis of a limit on the dissipation term for reducing spectral energy transfer at cut-off

2021

Numerical model to estimate subcooled flow boiling heat flux and to indicate vapor bubble interaction

2021

Large eddy simulation: A study of clearings in forest and their effect on wind turbines

2021

Tonal Noise of Voluteless Centrifugal Fan Generated by Turbulence Stemming from Upstream Inlet Gap

Low-Noise Propeller Design for Quiet Electric Aircraft

Unsteady Simulation of Tonal Noise from Isolated Centrifugal Fan

2020

Influence of complex terrain on a flow above a forest with clearing

A formulation of PANS capable of mimicking IDDES

Aeroacoustic analysis of aerodynamically optimized joined-blade propeller for future electric aircraft at cruise and take-off

2020

Direct numerical simulation of drag reduction by spanwise oscillating dielectric barrier discharge plasma force

2020

Fluid mechanics, turbulent flow and turbulence modeling

Numerical and experimental study of tonal noise sources at the outlet of an isolated centrifugal fan

Direct numerical simulation of spanwise Lorentz force oscillations in turbulent channel flow at low Reynolds number

Parametric investigation of low-dissipation low-dispersion schemes for unstructured flow solvers in large eddy simulation

Improved estimation of subcooled flow boiling heat flux for automotive engine cooling applications

Vibro-acoustics response of a simplified glass window excited by the turbulent wake of a quarter-spherocylinder body

2019

A new approximation to modulation-effect analysis based on empirical mode decomposition

Adjoint-based Broadband Noise Minimization using Stochastic Noise Generation

Airframe Noise Reduction for a Wing-flap Configuration Using DBD Plasma Actuators

2019

Non-Zonal Detached Eddy Simulation coupled with a steady RANS solver in the wall region

2019

A new formulation of fk for the PANS model

2019

Towards Adjoint-based Broadband Noise Minimization using Stochastic Noise Generation

Aeroacoustics research in Europe: The CEAS-ASC report on 2018 highlights (Eds: D. Gely, G. J. Bennett): 8.1. Vehicle cabin noise

Modelling of DBD plasma actuator for controlling noise from a tandem cylinders configuration

Unsteady simulation of tonal noise from isolated centrifugal fan

2018

Large-eddy simulation study of effects of clearing in forest on wind turbines

Grey-area mitigation using commutation terms at the interfaces in hybrid RANS-LES modeling

2018

Generation of interior cavity noise due to window vibration excited by turbulent flows past a generic side-view mirror

Simplifications Applied to Simulation of Turbulence Induced by a Side View Mirror of a Full-Scale Truck Using des

Investigation of Interior Noise from Generic Side- View Mirror Using Incompressible and Compressible Solvers of des and les

Interface methods for grey-area mitigation in turbulence-resolving hybrid RANS-LES

Application of a parallel solver to the LES modelling of turbulent buoyant flows with heat transfer

The PANS and PITM model: a new formulation of f_k

A new approximation to modulation effect analysis based on empirical mode decomposition method

Prediction of wind-turbine fatigue loads in forest regions based on turbulent LES inflow fields

2017

Direct numerical simulation analysis of spanwise oscillating Lorentz force in turbulent channel flow at low Reynolds number

2017

Evaluation of numerical wall functions on the axisymmetric impinging jet using OpenFOAM

2017

Enhancement of Free Vortex Filament Method for Aerodynamic Loads on Rotor Blades

2017

Noise radiated by low-Reynolds number flows past a hemisphere at Ma=0.3

Two-equation hybrid RANS–LES models: a novel way to treat k and ? at inlets and at embedded interfaces

Assessment of Conceptual Noise Reduction Devices for A Main Landing Gear using SNGR Method

Hybrid Reynolds-Averaged Navier-Stokes/Large-Eddy Simulation Modeling Based on a Low-Reynolds-Number k-omega Model

Computations and full-scale tests of active flow control applied on a Volvo truck-trailer

2016

Development of Free Vortex Wake Model for Wind Turbine Aerodynamics under Yaw Condition

Zonal PANS: evaluation of different treatments of the RANS-LES interface

Assessment of Flap Side-Edge Fence Noise using SNGR Method

Two-equation hybrid RANS-LES Models: A novel way to treat k and omega at the inlet

Aero-acoustic analysis and assessment of conceptual low-noise airframe configurations

2015

Large-Eddy Simulation Study of Thermally Stratified Canopy Flow

On the numerical modeling of active flow control for aerodynamics applications and its impact on the pressure field

Prediction of Transonic Duct Flow Using a Zonal Hybrid RANS-LES Modeling Approach

2015

Numerical Studies of the Upstream Flow Field around a Horizontal Axis Wind Turbine

Shape optimization and active flow control of truck-trailers for improved aerodynamics using large-eddy simulation and response surfaces

CAA analysis of a wing section with flap side-edges based on hybrid RANS-LES computation

Direct comparison of les and experiment of a single-pulse impinging jet

2014

A New Approach to Treat the RANS-LES interface in PANS

Influence of a forest canopy on the neutral atmospheric boudary layer - A LES study

Large Eddy Simulation of the flow and heat transfer in a half-corrugated channel with various wave amplitudes

Hybrid RANS-LES Modeling Using a Low-Reynolds-Number k−ω Based Model

The PANS k-epsilon model in a zonal hybrid RANS-LES formulation

2014

Development of Free Vortex Wake Method for Yaw Misalignment Effect on the Thrust Vector and Generated Power

Surface integral analogy approaches for predicting noise from 3D high-lift low-noise wings

Landing gear noise reduction technology development for future green regional aircraft

Development of a reduced-order model for wind turbine response to atmospheric turbulence in forest regions

Airframe Noise Reduction Technologies applied to High-Lift Devices of Future Green Regional Aircraft

2014

Development of Free Vortex Wake Method for Aerodynamic Loads on Rotor Blades

2014

Enhancement of Free Vortex Filament Method for Aerodynamic Loads on Rotor Blades

2014

Parallel implicit DNS of temporally-evolving turbulent shear layer instability

2013

The effect of corrugation on heat transfer and pressure drop in channel flow with different Prandtl numbers

Large-Eddy Simulation for Wind Turbine Fatigue Load Calculation in Forest Regions

2013

Vortex Method Application for Aerodynamic Loads on Rotor Blades

2013

Embedded Large-Eddy Simulation Using the Partially Averaged Navier–Stokes Model

Backscatter from a scale-similarity model: embedded LES of channel flow, developing boundary layer flow and backstep flow

A Modified TAB Model for Simulation of Atomization in Rotary Bell Spray Painting

2013

Quantitative numerical analysis of flow past a circular cylinder at Reynolds number between 50 and 200

2013

On the Numerical Modeling of Impinging Jets Heat Transfer - A Practical Approach

Hybrid RANS/LES Simulations for Aerodynamic and Aeroacoustic Analysis of a Multi-Element Airfoil

SNGR Method for Assessing Noise Induced by Flap Side-Edges

Lessons learned from hybrid RANS-LES computations of a three-element airfoil flow

Application and Comparison of Two Different DNS Algorithms for Simulating Transition to Turbulence in Taylor-Green Vortex Flow

Modified TAB Model for Viscous Fluids applied to Breakup in Rotary Bell Spray Painting

Local flow properties in relation to noise generation for low-noise high-lift configurations

On the transient modelling of impinging jets heat transfer. A practical approach

Comparison between standard and non-linear k-ε turbulence models for three-dimensional simulation of turbulent flow in a meandering open channel

Large Eddy Simulation of Heat Transfer in Boundary Layer and Backstep Flow Using PANS

A New Approach of Zonal Hybrid RANS-LES Based on a Two-equation k-eps Mode

Aeroacoustic Assessment of Conceptual Low-Noise High-Lift Wing Configurations

Hybrid RANS-LES Simulation of Turbulent High-Lift Flow in Relation to Noise Generation

2012

Surface Integral Analogy Approaches to Computing Noise Generated by a 3D High-Lift Wing Configuration

Feasibility of Hybrid RANS-LES Modeling of Shock/Boundary-Layer Interaction in a Duct

2012

Role of turbulence for mixing and soot oxidation for an equivalent diesel gas jet during wall interaction studied with LES.

Assessment of high-lift concepts for a regional aircraft in the ALONOCO project

2012

Experimental and computational studies of active flow control on a model truck-trailer

Embedded LES Using PANS

Precursor RANS computations for the F15 three-element high-lift configuration

Drag Reduction of Heavy Trucks by Active Flow Control of the Wake behind the Trailer

Numerical simulation of Kelvin-Helmholtz instability using an implicit, non-dissipative DNS algorithm

2011

A Low Reynolds Number Partially-Averaged Navier-Stokes Model for Turbulence

Fluid mechanics, turbulent flow and turbulence modeling, Lecture Notes in MSc courses

2010

Investigation of large scale shock movement in transonic flow

Simulation of Venous Plexus Blood Flow during Rapid Spinal Bending

Numerical Study of Crosswind Stability of a Simplified Car in Gusty Wind

Modeling Surface Tension in SPH by Interface Reconstruction using Radial Basis Functions

Experimental study of water transport on a generic mirror

Flow and Dipole Source Evaluation of a Generic SUV

Large Eddy Simulations: Wall Functions with Forcing given by Backscatter from a Scale-Similarity Model

On the Download Alleviation for the XV-15 Wing by Active Flow Control Using Large-Eddy Simulation

How to estimate the resolution of an LES of recirculating flow

A dissipative scale-similarity model

Approximation of subgrid-scale stresses based on the Leonard expansion

Large-eddy simulation of mixed convection-radiation heat transfer in a vertical channel

CFD MODELING OF PRESSURE TRANSIENTS IN THE SPINAL CANAL DURING WHIPLASH MOTION – A PILOT STUDY

Large Eddy Simulations: how to evaluate resolution

Download Alleviation of a Tilt-rotor Wing by Active Flow Control Strategies

A-LES for Drag Reduction of Truck-Trailers

Detached Eddy Simulations of an Airfoil in Turbulent Inflow

On the Numerical Modeling of Impinging Jet Heat Transfer

A Numerical Investigation of the Flow Past a Generic Mirror and its Impact on Sound Generation

Partially Averaged Navier-Stokes Modelling of Turbulent Channel Flow with and without Forcing

Hybrid LES-RANS: back scatter from a scale-similarity model used as forcing

Large eddy simulation of turbulence flow noise on streamers

Drag Reduction for Trucks by Active Flow Control of the Wake Behind the Trailer

Sound Generation and Radiation of an Open Two-Dimensional Cavity

On the Download Alleviation for the XV-15 Wing by Active Flow Control Using Large-Eddy Simulation

HYBRID LES-RANS: Inlet Boundary Conditions for Flows With Recirculation

POD based reconstruction of subgrid stresses for wall bounded flows using neural networks

A dissipative scale-similarity model

Estimating Resolution Requirements Using Two-Point Correlations and Spectra

The SAS model: A turbulence model with controlled modelled dissipation

Inlet Boundary Conditions for Embedded LES

"Using Isotropic Synthetic Fluctuations as Inlet Boundary Conditions for Unsteady Simulations"

Natural Convection Boundary Layer in a 5:1 Cavity

Flow and dipole source evaluation of a generic SUV

On the failure of the quasicylindrical approximation and the connection to vortex breakdown in turbulent swirling flow

Examination of the shear stress transport assumption with a low-Reynolds number κ - ω model

Wind-driven rivulet over an edge with break-up

HYBRID LES-RANS: Inlet Boundary Conditions for Flows Including Recirculation

Large Eddy Simulation of Transonic Flow with Shock Wave/Turbulent Boundary Layer Interaction

POD based reconstruction of subgrid stresses for wall bounded flows using neural networks

Large-eddy simulation of natural convection boundary layer on a vertical cylinder

Hybrid LES/RANS Using Synthesized Turbulence for Forcing at the Interface

The Sub-Critical Flow pas a Generic Side Mirror and its Impact on Sound Generation and Propagation

LES of Mixed Convection Boundary Layer Between Radiating Parallel Plates

Large-eddy simulation and deduced scaling analysis of Rayleigh-Benard convection up to Ra=10^9

Evaluation of the {SST-SAS} Model: Channel Flow, Asymmetric

Large Eddy Simulation of Turbulent Swirling Flow Through a Sudden Expansion

ERCOFTAC Bulletin

Evaluation of the SST-SAS Model: Channel Flow, Asymmetric Diffuser and Axi-symmetric Hill

How to make energy spectra with Matlab

An acoustic analogy applied to the laminar upstream flow over an open 2D cavity

An Investigation of Outlet Boundary Conditions for Incompressible Near Field Acoustics

LARGE EDDY SIMULATION OF NATURAL CONVECTION BOUNDARY LAYER ON A CYLINDER

Effects of Inflow Conditions and Subgrid Model on LES for Turbulent Jets

Large-Eddy Simulation of the Flow Around a Simplified High Speed Train Under the Influence of a Cross-Wind

Flow Around a Simplified Car, Part 1: Large Eddy Simulation

Flow Around a Simplified Car, Part 2: Understanding the Flow

Numerical predictions of low Reynolds number flows over two tandem circular cylinders

Hybrid LES-RANS: Inlet Boundary Conditions

Computations of Flow Field and Heat Transfer in a Stator Vane Passage Using the V2F Turbulence Model

Numerical simulations of a thermocline in a pressure driven flow between two infinite horizontal plates

Modelling the Entrance Region in a Plane Asymmetric Diffuser by Elliptic Relaxation

LES Prediction of Flow and Acoustic Field of a Coaxial Jet

Investigation of an Isothermal Mach 0.75 Jet and its Radiated sound Using Large-Eddy Simulation and Kirchhoff Surface Integration

Large-Eddy Simulation of Subsonic Turbulent Jets and Their Radiated Sound

Acoustic Source Terms for the Linearized Euler Equations in Conservative Form

Numerical Analysis of Rayleigh-Bénard Convection Flow Using Large Eddy Simulation at high Rayley Numbers

Influence of floor motions in wind tunnels on the aerodynamics of road vehicles

Hybrid LES-RANS: Computation of the Flow Around a Three-Dimensional Hill

Pressure drop and heat transfer rates in forced convection rotating square duct flows at high rotation rates

Assessment of Realizability Constraints in V2F Turbulence Models

Semi-implicit Preconditioning for Wall-bounded Flow

Zonal k-l Based Large Eddy Simulation

Jet Noise Modeling Using Synthetic Anisotropic Turbulence

Exploring the Flow Around a Simplified Bus with Large Eddy Simulation and Topological Tools

Anisotropic Formulation of the

Hybrid RANS-LES: an Approach to make LES Applicable at High Reynolds Number

Hybrid LES/RANS Using Synthesized Turbulence for Forcing at the Interface

Modeling of Synthetic Anisotropic Turbulence and its Sound Emission

2004

Large-Eddy Simulation of the Flow Around Simplified Car Model

Large Eddy Simulation of the Flow Around an Ahmed Body

Role of Initial Conditions in Establishing Asymptotic Flow Behavior

A Study of Mach 0.75 Jets and Their Radiated Sound Using Large-Eddy Simulation

Low-Reynolds Number Turbulence Models:An Approach for Reducing Mesh Sensitivity

Aero Acoustic Investigation of an Open Cavity at Low Mach Number

Jet Noise Prediction Using Stochastic Turbulence Modeling

Large-Eddy Simulation of a Mach 0.75 Jet

Numerical Study of the Flow Around a Bus-Shaped Body

An acoustic analogy applied to incompressible flow fields

LESFOIL: Large Eddy Simulation of Flow Around a High Lift Airfoil

Zonal k-l based Large Eddy Simulations

Large Eddy Simulation Applied to a High-Reynolds Flow Around an Airfoil Close to Stall

Modifications of the v2-f Model for Computing the Flow in a 3D Wall Jet

DNS in a Plane vertical Channel With and Without Buoyancy

Numerical Study of Heat and Fluid Flow in a Plate-Fin Heat Exchanger With Vortex Generators

Application of an Angular Momentum Balance Method for Investigating Numerical Accuracy in Swirling Flow

Hybrid RANS-LES with Additional Conditions at the Matching Region

Hybrid LES-RANS: A one-equation SGS Model combined with a κ - ω model for predicting recirculating flows

Validations of CFD against detailed velocity and pressure measurements in water turbine runner flow

Prediction of turbulent heat transfer in stationary and rotating U-ducts with rib roughened walls

Validations and investigations of the computed flow in the GAMM Francis runner and the Hölleforsen Kaplan runner

Large-Eddy Simulations of Turbulent Heat Transfer in Stationary and Rotating Square Duct

An Improved k-omega Turbulence Model Applied to Recirculating Flows

A test case for large-eddy simulation in vehicle aerodynamics

Large-Eddy Simulation of the Flow Around a Bluff Body

A mixed one-equation subgrid model for large-eddy simulation

Development of Large-Eddy Simulation for Vehicle Aerodynamics

Acoustic Source Terms for the Linear Euler Equations on Conservative Form

On a Subgrid-Scale Heat Flux Model for Large Eddy Simulation of Turbulent Thermal Flow

A Model for Estimating Three-Dimensional Boundary Layers in Rotating Duct Flow at High Rotation Rates

2001

Large-Eddy Simulation of the Flow Around a Three-Dimensional Bluff Body

Hybrid LES-RANS: A Combination of a One-equation SGS Model and a k-omega Model for Predicting Recirculating Flows

Effect of Inclined Vortex Generators on Heat Transfer Enhancement in a Three-Dimensional Channel

A Hybrid LES/RANS Model Based on a One-Equation SGS Model and a Two-Equation k-omega Model

Large Eddy Simulation for Turbulent Buoyant Flow in a Confined Cavity

Large ´-Eddy Simulation of the Flow Around A Simplified Bus

Comparative Study of LES for Turbulent Buoyant Flow in Terms of SGS Model and Grid Resolution

A Numerical Investigation of the Flow in the Wicket Gate and Runner of the Hölleforsen (Turbine-99) Kaplan Turbine Model

Large Eddy Simulation of the Flow Around an Airfoil

Parallel multiblock CFD computations applied to industrial cases

Large-Eddy Simulation of the Flow Around a Ground Vehicle Body

A validation of parallel multiblock CFD against the GAMM Francis water turbine runner at best efficiency and off-design operating conditions

A New Two-Equation Eddy Viscosity Transport Model for Turbulent Flow Computation

A Numerical Comparison of Four Operating Conditions in a Kaplan Water Turbine, Focusing on Tip Clearance Flow

Large-Eddy Simulations of Turbulent Flow in a Rotating Square Duct

Numerical Investigation of Turbulent Buoyant Flow in a Cavity Using Large Eddy Simulation

Model Experiments with low Reynolds Number Effects in a Ventilated Room

Large Eddy Simulation of Flow Past a Square Cylinder: Comparison of Different Subgrid Scale Models

On the Wall Boundary Condition for Computing Heat Transfer With k-omega Models.

On CFD and Transient Flow in Vehicle Aerodynamics

Large Eddy Simulation of the Flow Around an Aerospatiale A-aerofoil

Erratum

Room Airflows with Low Reynolds Number Effects

Comparison of Near-wall Behavior and its Effect on Heat Transfer for k-omega and k-eps Turbulence Models in Rib-roughened 2D Channels

Low-Reynolds Number Effects in Ventilated Rooms: A Numerical Study

LESFOIL: A European Project on Large Eddy Simulations Around a High-lift Airfoil at High Reynolds Number

Flow around a three-dimensional bluff body

On Transient Modeling of the Flow Around Vehicles Using the Reynolds Equation

A Dynamic One-Equation Model for Simulation of Flow Around a Square Cylinder

Comparison of Two One-Equation Subgrid Models in Recirculating Flows

Computation of Turbulent Buoyant Flows in Enclosures with LRN k-omega Models

A numerical investigation of tip clearance flow in Kaplan water turbines

Large-Eddy Simulation of the Flow Around a Surface-Mounted Cube Using a Dynamic One-Equation Subgrid Mode

Numerical Simulation of Flow past a Square Cylinder

CALC-PVM: A Parallel SIMPLEC Multiblock Solver for Turbulent Flow in Complex Domains

Comparison of Subgrid-Scale Models in LES for Turbulent Convection Flow With Heat Transfer

Towards the Determination of Regional Purging Flow Rate

On the Assessment of ventilation Performance with the Aid of Numerical Simulations

An Efficient and Stable Solution Procedure of Compressible Turbulent Flow on General Unstructured Meshes Using Transport Turbulence Models

High-Lift Airfoil Flow Simulations Using a Two-Layer Reynolds Stress Transport Model

Numerical Investigation of Turbulent Plumes in Both Ambient and Stratified Surroundings

A Numerical Study of Turbulent Forced Convection in a Square Duct Using Different Turbulence Models

Transonic Inviscid/Turbulent Airflow Flow Simulations Using a Pressure Based Method with Higher Order Schemes

Turbulent Transonic Airfoil Flow Simulation Using a Pressure Based Algorithm

A Pressure Based Euler Scheme for Transonic Internal and External Flow Simulation

Reynolds Stress Transport Modeling of Transonic Flow Around the RAE2822 Airfoil

Second Moment Closure for Calculation of Turbulent Recirculating Flows in Complex Geometries with Collocated Variable Arrangement

Transonic Flow Computations Using a Modified SIMPLE Code Based on a Collocated Grid Arrangement

Analysis of Two Fast-Chemistry Combustion Models and Turbulence Modeling in Variable Density Flow

Navier-Stokes Computation of Airfoil in Stall Using Algebraic Reynolds-Stress Model

Calculation of the Flow Around a High-Lift Airfoil Using an Explicit Code and an Algebraic Reynolds Stress Model

Second-Order Correction of the k-eps Model to Account for Non-Isotropic Effects due to Buoyancy