CFD Consulting Services

• Finite Difference
• Finite Volume
• Spectral Methods
• ODE, Runge-Kutta, Newton
• Steady-state & transient

• Eulerian – Eulerian method
• Eulerian – Lagrangian method
• VOF method
• Phase change, condensation & evaporation
• Enthalpy method (solidification)

• Chemical reactions, combustion
• Fire modeling
• Heat Transfer, Radiation
• Laminar & turbulent flows
• Atmospheric dispersion
• Natural and forced convection
• Critical fluids

• Micro fluidics
• Crystal Growth
• Flow in Porous media
• Conjugate heat transfer
• HVAC, Ventilation, Wind

Our CFD engineering consultants have considerable experience with the world's best CFD tools such as Phoenics, Flair, Flair Datacenter, Phoenics CVD, Windsim, CFD2000 and house developed CFD software.  Our team is also highly qualified in a variety of industrial applications including biomedical devices, electronic cooling, under-hood automotive, aircraft and automotive cabins, chemical mixing tanks, fire in tunnels, pollutants dispersion in atmosphere and/or water,  HVAC, Wind energy, and wind loads on buildings and oil tanks. Other applications topics can be solved through the network of our direct partners. Our job is to simplify problems to be treated in a consistent manner by numerical softwares. To simplify correctly a complex problem is the art of cfd experts. Moreover, we always support our performance by presenting validated results and our preponderant concern relies on a careful methodological approach with the utmost attention to any given problem. The complexity will sometimes rise from coupled multiphysics, from complex geometries, through novel added equations to simulate a new challenging physical problem. It is why we are here to bring this expertise to you in terms of efficient tools, quality services and bright ideas.

All engineering projects are accurately scoped and well defined before work commences.  Project deliverables typically include:

• Detailed project report
• CFD model files and results files
• Analysis / post-processing files and outputs

Our recent projects are in:

Pressure drop in corrugated flexible tubes, Pressure drop in microfluidic channels with pillars, Flow in geological porous media, Water Nozzle jets, Van Der Walls Dynamics, Tank drainage of liquefied fluids, melting and solidification of organics materials in a plasma furnace, reservoir sloshing.

• Critical fluids in Micro fluidics devices and in weightlessness
• Phase transition in critical fluids – Van Der Waals Dynamics
• Supercritical fluids in porous media
• A novel numerical approach for low Mach number: Application to supercritical fluids
• Possibility of long-distance heat transport in weightlessness using supercritical fluids
• Low-frequency vibrations in a near-critical fluid
• Chemical Vapor Deposition in 2D and 3D reactors (Si and GaAs) (Phoenics & Fluent)
• Crystal growth from the melt (Bridgman-Stockbarger) in cylindrical ampoules (Spectral and Phoenics)
• Analysis of Convection in crystal growth apparatus in microgravity environment under g-jitters
• Evaporation of GeCl4 & SiCl4 in cylindrical depressurized reservoirs
• Physical Vapor Transport of I2 in 3D cylindrical ampoules and in 1D and 2D axi-symmetric ampoules
• Numerical modeling of natural and forced convection in Chemical Vapor Deposition reactors (CVD) (FIDAP)
• Oscillatory Convection and Control by Rotation in a large Prandtl Number Melt during a Czochralski process
• Method for Moving Boundaries, Heat Transfer, and Convection during Directional Solidification
• Evaporation, condensation problems from water pools.
• VOF methodology for droplet in liquids and for emulsions characterization. Application to sloshing problems.
• Numerical simulation of the unsteady hydrodynamics of a water droplet in paraffin oil with VOF

• Numerical modeling of fire and smoke development in the Gothard tunnel
• Three Dimensional numerical modelling of fires in road and railway tunnels
• Pollutants dispersion from a chimney in the city of Cairo
• Fire and smoke development in car park of the city of Annecy
• Pollutants dispersion from in/out of tunnels on freeway A16 north of Paris
• Post-combustion in the incinerator of Fos and Rognac, France
• 3D numerical optimization of Air Plasma furnace for organic materials incineration.
• Escape oil from the wreck of the tanker PRESTIGE in Atlantic Ocean
• Liquefied gas in semi-spherical reservoir with baffles and optimization of the blade placement and rotation
• Optimization in the cooling of optical fibers under Helium injection process
• Modelling Accidental Industrial Liquid Petroleum Gas (LPG) Releases
• Experimental and numerical study of back layering occurrence in the case of tunnel fire using a reduced scale model
• Time-dependent thermocapillary instability in multilayer system
• Numerical optimization of the shape of the condensers
• New Architectural Forms to Enhance Dew Collection
• Dew, fog and rain as supplementary sources of water in south-western Morocco
• Comparison of various radiation-cooled dew condensers using computational fluid dynamics
• Spectral treatment of the Burger equation with Shock
• Numerical study of skin friction reduction mechanisms downstream of a skin friction device beneath a boundary layer

Presented at ASME 2013 Heat Transfer Summer Conference: A Novel Numerical Approach for Low Mach Number: Application to Supercritical Fluids

Pressure drop in microfluidic channel with pillars

In the present study, we investigate numerically single phase flow in through micro-channels with integrated micro-pillars to calculate the pressure drop and flow resistance. The micro-channels, which contain micro-pillars arranged in square and staggered arrangements. The setup of such configurations are token from a thorough published experiments [1] of water injection in micro-model at various Reynolds number, and plots arrangements. The numerical modeling of such experiments has been done here using the finite volume software PHOENICS in 3D, 2D and 1 D configurations. Read More

Fire on a Tire

The accident analysis shows that different truck tire fires have occurred in recent years, some resulting in the death of the driver due to the tire explosion. In the case of a tank containing LPG, it also raises the question of the risk of BLEVE during a tire fire.

In this context, FASIS (Industrial Safety Facilitators) and ArcoFluid Consulting conducted an experimental and numerical project to study the impact of a tire fire on a tank containing LPG. Read More

Anaerobic Stirred Tank Reactor

The objective of the present project is to enhance and optimize the design of an anaerobic stirred tank bioreactor for scale-up purpose and for turning batch to continuous processing. CFD constitutes in this case an useful tool to better elucidate the complex interplay between the reactor geometry and the operating conditions on the one hand, and mixing and biochemical reaction on the other hand. Read More

Butane jet

The numerical modelling consists in using the Phoenics CFD code in order to simulate the releases of liquid butane in the atmosphere, with and without the presence of an obstacle. The used technique of two phase’s atmospheric dispersion is a Eulerian - Eulerian approach based on the IPSA method. The inlet boundary conditions for this CFD modelling are based on experimental data: mass release, droplet velocity and mean droplet size within the jet. To handle evaporation from puddle pools, specific boundary conditions were introduced. Read More

Sloshing in Cylindrical Tank

We performed a numerical simulation of the sloshing of a diffusion interface between two miscible liquids (pure and salt water) in order to address the first step in the understanding of the behavior of very expandable cryogenic liquids. The two phases of some tenth of cm high are contained in a cylindrical container of 1 m in diameter in a gravitational stable configuration. Two ways of exciting internal waves are considered, by moving periodically the tank along one fixed direction and by moving up and down an insert located inside the tank. Read More

Smoke Movement

The aim of this work is to show how a complex problem of safety can be studied using CFD simulation and which practical solutions can be brought using this technique. The CFD simulation has been carried out by using the Phoenics CFD package. The problem relates to the underground car park of the Town hall of Annecy (France). Its shape is a helical slab, which revolves around a central atrium. A situation of fire developing at the bottom of the car park is simulated. Read More

Vector Field near Critical Point

From the dynamic van der Waals theory of Onuki (PHYSICAL REVIEW E 75, 036304 _2007) starting with entropy and energy functional with gradient contributions. The resultant hydrodynamic equations contain the stress arising from the density gradient. It provides a general scheme of two-phase hydrodynamics involving the gas-liquid transition in non-uniform temperature. Some complex hydrodynamic processes with evaporation and condensation are examined numerically. Read More

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