What is ICFD++?

• Metacomp’s Computational Fluid Dynamics (CFD) software suite
• Seamlessly handles most flow regimes
• All grid types handled
• External and internal flows
• Capable of treating complex physics
• Unique capabilities for moving meshes
• Fast computation of steady and unsteady flows
• Realizable physical, numerical & mathematical models
• General framework, extensible and customizable
• Efficient scalability to thousands of CPU cores
• ICFD++ is used by over 200 discerning organizations worldwide
• ICFD++ is running on hundreds of thousands of CPUs at any given moment

Why ICFD++?

• The only commercial flow solver that provides efficient flow solution for any flow regime without sacrificing accuracy and robustness.
• ICFD++ consistently outperforms other commercial solvers in blind benchmarks and workshops.
• Software support that is unparalleled in the industry. Customers have direct access to senior support/staff members.
• An easy-to-use Advanced User Interface (AUI) that is built upon the premise of simplifying complexities. Simulations involving multi-physics and multiple phases are set in a matter of minutes.

Validation 

CFD++ has been extensively validated for a vast array of flow regimes and applications.

ICFD++ Publications

A collection of papers by Metacomp's customers.

Aeroacoustics

• Batten, P., Ribaldone, E., Casella, M. and Chakravarthy, S., "Towards a Generalized Non-Linear Acoustics Solver", AIAA-2004-3001, 10th AIAA/CEAS Aeroacoustics Conference, Manchester, UK, 10-12 May, 2004.
• Ilario da Silva,C.R., Almeida, O., Batten, P., "Investigation of an Axi-Symmetric Subsonic Turbulent Jet using Computational Aeroacoustics Tools", 13th AIAA/CEAS Aeroacoustics Conference, AIAA 2007-3656, 2007. 

Combustion/Propulsion

• Archambault M.R. and Peroomian O., "Characterization of a Gas/Gas, Hydrogen/Oxygen Engine", AIAA-2002-3594 38th AIAA Joint Propulsion Conference
• Archambault M.R. and Peroomian O., "Three-Dimensional Simulation of a Gas/Gas, Hydrogen/Oxygen Engine", AIAA-2003-314 41st AIAA Aerospace Sciences Meeting 
• Abdelhamid Y.A. and Ganz U.W., "Prediction of Shock-Cell Structure and Noise in Dual Flow Nozzles", AIAA-2007-3721 13th AIAA/CEAS Aeroacoustics Conference

 Eulerian Dispersed Phase

• Champagne V.K., Helfritch D.J. and Dinavahi S., "Comparison of Empirical and Theoretical Computations of Velocity for a Cold Spray Nozzle", IEEE, 978-1-4244-5769-4, 2009 
• Vu B., Bachchan N., Peroomian O., Akdag V., "Multiphase Modeling of Water Injection on Flame Deflector", AIAA-2013-2592, AIAA Fluid Dynamics 2013 
• Martins da Silva D., Bachchan, N., Kim I., Peroomian O., "Icing Collection Efficiency Prediction using an Eulerian-Eulerian Approach", AIAA-2014-3073, AIAA Fluid Dynamics 2014 

 Ground Effects

• R. E. Wirz and S. S. Shariff, "Ground Effects for CEV Vertical Retrorockets", AIAA-2007-5758, July 2007.

High-Altitude and Reentry

• Gimelshein N.E., Lyons R.B., Reuster J.G. and Gimelshein S.F., "Analysis of Physical and Numerical Factors for Prediction of UV Radiation from High Altitude Two-Phase Plumes", 40th AIAA Thermophysics Conference, Jun 2008.
• Gimelshein N.E., Lyons R.B., Reuster J.G. and Gimelshein S.F., "Numerical Prediction of UV Radiation from Two-Phase Plumes at High Altitudes", 45th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan 2007 
• Rothnie M.D. and Acheson K.E., "Fast and Accurate Use of Unstructured CFD Methods to Assess Performance and Aerodynamic Heating of Reusable Launch Vehicles in Hypersonic Flight", AIAA-2009-3632 
• Boyce R. and Stumvoll A.K., "Re-Entry Body Drag: Shock Tunnel Experiments and Computational Fluid Dynamics Calculations Compared", Shock Waves (2007) 16:431-443 
• Lin T.C., Kim M., Sproul L.K., Choi F. and Shivananda T.P., "High Angle of Attack Aerodynamics and Aerothermodynamics", AIAA 2006-663 

High-Lift Aerodynamics

• Khare A., Baig R. et al., "Computational Simulation of Flow Over a High Lift Trapezoidal Wing", Intl. Journal of Aerospace Innovations, Vol. 1, No. 4, (2009) 189-199 (Note: Subsequent work has shown much improved scalability with later builds of CFD++) 

Microdevices

• Jugroot M., Groth C.P.T., Thomson B.A., Baranov V. and Collings B.A., "Numerical Investigation of Interface Region Flows in Mass Spectrometers: Neutral Gas Transport", J. Phys. D: Appl. Phys. 37 (2004) 1289-1300 | 
• Jugroot M., Groth C.P.T., Thomson B.A., Baranov V. and Collings B.A., "Numerical Investigation of Ion Transport in Under-Expanded Jet Flows", AIAA-2003-4210 |

Projectiles

• J. DeSpirito, S.I. Silton, and P. Weinacht, "Navier-Stokes Predictions of Dynamic Stability Derivatives: Evaluation of Steady-State Methods", ARL-TR-4605, September 2008. 
• J. Sahu, "Numerical Computations of Dynamic Derivatives of a Finned Projectile Using a Time-Accurate CFD Method", AIAA-2007-6581, August 2007. 

Turbulence Modeling

• P. Batten, T.J. Craft, M.A. Leschziner and H. Loyau, "Reynolds-Stress Transport Modelling for Compressible Aerodynamics Applications", AIAA, volume 37, number 7, pages 785-797, 1999.

Below you will find a collection of CFD++ publications by the research staff of Metacomp Technologies.

• Uriel C. Goldberg (2016): "A √k − l Turbulence Model for Fluids Engineering Applications", Studies in Engineering and Technology Vol. 3, No. 1; August 2016 . 
• Uriel C. Goldberg, Paul Batten, Oshin Peroomian & Sukumar Chakravarthy (2015): "The R-γ transition prediction model", International Journal of Computational Fluid Dynamics .
• Uriel C. Golberg, Paul Batten (2015): "A wall-distance-free version of the SST turbulence model", Engineering Applications of Computational Fluid Mechanics
•  P.Batten, U.Goldberg, E.Kang and S.Chakravarthy, "Smart Sub-Grid-Scale Models for LES and hybrid RANS/LES", AIAA-2011-3472, 2011. 
• U. Goldberg, S. Palaniswamy, P. Batten, V. Gupta, "Variable Turbulent Schmidt and Prandtl Number Modeling", Engineering Applications of Computational Fluid Mechanics, Vol. 4, No. 4, pp. 511-520, 2010. 
• P.Batten, U.Golberg, O.Peroomian and S.Chakravarthy, "Recommendations and best practice for the current state of the art in turbulence modelling", International Journal of Computational Fluid Dynamics, vol. 23, no. 4, pages 363-374, 2009.
• U.Goldberg, O.Permoomian, P.Batten and S.Chakravarthy, "The k-epsilon-Rt Turbulence Closure", Engineering Applications of Computational Fluid Mechanics, vol. 3, no. 2, pages 175-183, 2009.
• U. Goldberg, "A k-ℓ Turbulence Closure Sensitized to Non-Simple Shear Flows”, Int. J. of Computational Fluid Dynamics, 20, No. 9, 2006, 651-656
• Batten, P., Goldberg, U. and Chakravarthy, S., “Interfacing Statistical Turbulence Closures with Large Eddy Simulation,” AIAA Journal, volume 42, number 3, pages 485-492, March 2004.
• Batten, P., Ribaldone, E., Casella, M. and Chakravarthy, S., “Towards a Generalized Non-Linear Acoustics Solver,” AIAA-2004-3001, 10th AIAA/CEAS Aeroacoustics Conference, Manchester, UK, 10-12 May, 2004.
• Goldberg, U., Batten, P. and Palaniswamy, S., “The q-ℓ Turbulence Closure for Wall-Bounded and Free Shear Flows,” AIAA Paper 2004-269, 42nd AIAA Aerospace Sciences Meeting, Reno, NV, January 2004.
• Goldberg, U., “Turbulence Closure with a Topography-Parameter-FreeSingle Equation Model,” IJCFD, 17, No. 1, pp. 27-38, 2003.
• P. Batten, U. Goldberg and S. Chakravarthy "LNS - An Approach Towards Embedded LES," AIAA Paper No. 2002-0427, 40th Aerospace Sciences Meeting and Exhibit, Reno/NV, 2002. 
• Goldberg, U., Batten, P., Palaniswamy, S., Chakravarthy, S. and Peroomian, O., "Hypersonic Flow Predictions Using Linear and Nonlinear Turbulence Closures," AIAA J. of Aircraft 37 No. 4, pp. 671-675, 2000.
• Goldberg, U., "Hypersonic Flow Heat Transfer Prediction Using Single Equation Turbulence Models,"ASME J. Heat Transfer 123 No. 1, pp. 65-69, 2001.
• Goldberg, U. and Batten, P., "Heat Transfer Predictions Using a Dual-Dissipation k-epsilon Turbulence Closure," AIAA J. of Thermophysics and Heat Transfer 15 No. 2, pp. 197-204, 2001.
• Palaniswamy, S., Goldberg, U., Peroomian, O. and Chakravarthy, S., "Predictions of Axial and Transverse Injection into Supersonic Flow," Flow, Turbulence and Combustion 66 No. 1, pp. 37-55, 2001.
• P. Batten, U.C. Goldberg, S. Palaniswamy and S.R. Chakravarthy "Hybrid RANS/LES : Spatial-Resolution and Energy-Transfer Issues," TSFP2, Stockholm, 2001.
• P. Batten, U.C. Goldberg, S.R. Chakravarthy, T.J. Craft and M.A. Leschziner "Afterbody Boattail- and Plume-Flow Modeling using Anisotropy-Resolving Turbulence Closures," AIAA Paper No. 01-3977, 37th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Salt Lake City, Utah 2001.
• P. Batten, T. Bose, S. Chakravarthy, S. Palaniswamy, U. Goldberg and O. Peroomian "Effect of Stagger Angle on Convective Heat Transfer Inside Rotating Tubes," AIAA Paper No. 01-3755, 37th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Salt Lake City, Utah 2001. 
• T.K. Bose "A CFD Study of Hypersonic Weakly-Ionized Argon Plasma Flow," AIAA Paper No. 01-3021, 35th AIAA Thermophysics Conference, Anaheim, California, 2001. 
• S. Chakravarthy, T. Bose, P. Batten, S. Palaniswamy, U. Goldberg and O. Peroomian "Convective Heat Transfer Inside Rotating Tubes," AIAA Paper No. 00-3356, 36th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Huntsville, Alabama 2000.
• T. K. Bose "A Van-der-Walls Approach for Nozzle Flow of Weakly Ionized Gases," 38th Aerospace Sciences Meeting and Exhibit, Reno/NV, AIAA-2000-0216, 2000.
• P. Batten, U. Goldberg and S. Chakravarthy "Sub-grid Turbulence Modeling for Unsteady Flow with Acoustic Resonance," AIAA Paper No. 00-0473, Reno 2000. 
• T. K. Bose, S. Chakravarthy, U. Goldberg, S. Palaniswamy and O. Peroomian "CFD Analysis of Turbine Rotating Shafts and Disks," 35th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Los Angeles/CA, AIAA-99-2523, June 1999.
• T. K. Bose "Thermodynamic Analysis of Magnetogasdynamic Accelerator for Hypersonic Tunnels," 37th Aerospace Sciences Meeting and Exhibit, Reno/NV, AIAA-99-0890, Jan 1999.
• U. Goldberg and O. Peroomian "Hypersonic Flow Heat Transfer Prediction with Wall-Distance-Free Turbulence Models," Computational Methods and Experimental Measurements IX, pages 261-270, G.M. Carlomagno and C.A. Brebbia (Eds.), WIT Press, 1999.
• P. Batten, M. A. Leschziner and T. J. Craft "Reynolds-Stress-Modeling of Afterbody Flows," TSFP1, Santa Barbara, September 1999.
• U. C. Goldberg and S. Palaniswamy "The k-e-f_mu Turbulence Closure Model," Computer Meth. Appl. Mech. & Engrg., 179/1-2, pages 145-156, 1999.
• U. Goldberg, O. Peroomian, and S. Chakravarthy "Application of k-e-R Turbulence Model to Wall-bounded Compressive Flows," AIAA Paper No. 98-0323, Reno 1998. 
• S. Chakravarthy and S. Palaniswamy and U. Goldberg and O. Peroomian and B. Sekar "A Unified-grid Approach for Propulsion Applications," 34th AIAA/ASME/ SAE/ASEE Joint Propulsion Conference, Cleveland, July 1998.
• U. Goldberg, O. Peroomian, and S. Chakravarthy "A Wall-Distance-Free k-e Model With Enhanced Near-wall Treatment," ASME J. Fluids Engrg., volume 120, pages 457-462, September 1998.
• O. Peroomian, S. Chakravarthy, Sampath Palaniswamy, and U. Goldberg "Convergence Acceleration for Unified-Grid Formulation using Preconditioned Implicit Relaxation," AIAA Paper No. 98-0116, Reno 1998. 
• U. Goldberg, O. Peroomian, and S. Chakravarthy and B. Sekar "Validation of CFD++ Code Capability for Supersonic Combuster Flowfields," AIAA Paper No. 97-3271, Seattle 1997. 
• O. Peroomian and S. Chakravarthy "A 'Grid-Transparent' Methodology for CFD," AIAA Paper No. 97-0724, Reno 1997. 
• S. Chakravarthy, U. Goldberg, O. Peroomian and B. Sekar "Some Algorithmic Issues in Viscous Flows Explored using a Unified-Grid CFD Methodology," 13th AIAA CFD Conference, Snowmass, June 1997.
• S. Chakravarthy, O. Peroomian and B. Sekar "Some Internal Flow Applications of a Unified-Grid CFD Methodology," AIAA Paper No. 96-2024, Florida 1996.

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Please contact Metacomp Technologies for any information regarding these publications.

ICFD++ Features 

• Advanced UI
• Turbulence
• Numerics
• Reacting Flows
• Heat Transfer & Radiation
• Moving Meshes
• Mesh Morphing
• Eulerian Multiphase
• Lagrangian Multiphase
• Mixture Model
• Volume of Fluid
• Non-Newtonian Flows
• Physics Source Terms
• Hypersonics

Advanced User Interface (AUI)

• ICFD++ is part of the Metacomp’s Integral Computational Multi-Physics (ICMP) framework
• Common interfaces and features for mesh generation, CFD, structural analysis and solution visualization
• Consistent UI and functionalities between all ICMP-based products

  

• Intuitive and simple guided problem setup process
• Powerful and user-friendly at the same time

ICFD++ has the following Turbulence models

Topography-parameter-independent models

• 1-equation models:
  • Rt model
  • SA (including QCR & RC variants)
• 2-equation models:
  • Realizable k-ε model
  • Non-linear (cubic) k-ε model
  • SST
  • Non-linear (quartic) Hellsten model
• 3-equation model:
  • Realizable k-ε-Rt model
• 4-equation Langtry-Menter transition model
• 7-equation non-linear RSTM model

Advanced wall functions: 

• Handle any y+ and provide consistent solutions at any y+
• Seamless switching between low and high Re approaches depending on y+

LES and Hybrid RANS/LES

• Models: LNS, DES97, DDES and IDDES
• Improved accuracy with smart sub-grid scale modeling
• Large-Eddy STimulation for automatic eddy seeding in LES

Advanced Numerics

• Density and pressure-based solvers for appropriate regimes
• A multi-dimensional higher-order Total Variation Diminishing (TVD) interpolation is used to avoid spurious numerical oscillations
• Approximate Riemann solvers are used to guarantee correct signal propagation for the inviscid flow terms
• Preconditioning which prevents eigenvalue spread and achieves near-optimal minimum levels of dissipation in low-speed flows
• Advanced convergence acceleration techniques used include unique pre-conditioning, relaxation and multi-grid algorithms

 

ICFD++ Reacting Flows

• Generalized Arrhenius Chemistry Model
• Large database of gases and liquids
• Reactions handled accurately and efficiently using a smart integrator
• Chemkin conversion tool for species and reactions information
• User-defined chemistry (UDF) functionality
• Automatic detection and handling of non-integer power reactions
• Dynamically Thickened Flame Model resolves flame fronts and captures turbulence-chemistry interactions
• Pressure dependent reactions
• Volumetric source for simulating ignition source
• Handling of supercritical combustion via cubic equations of state

 

Heat Transfer and Radiation

Conjugate Heat Transfer

• Isotropic and constant properties
• Composites and variable properties e.g. temperature-dependent

Radiation

• P1 radiation model
• Discrete ordinates (DO) model

 

Moving Meshes

• Unique capabilities in simulating steady and unsteady flows over complex geometries including bodies in relative motion
• Sliding and overset meshes
• Accurate treatment of conservation for such meshes
• Sequential cutting approach for cutting & blanking
• Global and body frame motion modes
• Includes an integrated rigid body dynamics (RBD) capability with a six-degree-of-freedom (6DOF) module
• Co-simulation possibilities in 6DOF mode

F18 Store Separation

Demo geometry of a F18 releasing external gas tank

Metacomp Prop-Plane

Meta-UAV

Geometry designed by Metacomp engineers for solver demo purposes.

 

 

Mesh Morphing

• RBF-based mesh morphing available via tool and solver (transient mode)
• File-based and BC-based mesh morphing modes
• Special analytical morphing modes for flexible discs and pistons
• Automatic periodicity of motion
• Multi-CPU mesh morphing (tool and solver)

 

Eulerian Dispersed Phase Capabilities

Eulerian Dispersed Phase (EDP)

• Source terms (lift force, buoyancy)
• Melting, solidification, radiation
• Grace model for air bubbles
• Oxygen transfer model (OTM)

Evaporation models

• Constant evaporation rate
• Boiling model
• Boiling+Hertz-Knudsen

Condensation models

• Gyarmathy model
• Hertz-Knudsen model
• Condensation in the expansion of combustion products + pure steam flows.

Special physics:

• Particle size distributions
• Aero break-up model
• Wall impingement model (SLD)

Aero break-up model

• Models secondary aero breakup of droplets
• Application to liquid fuel injection, aircraft icing simulations

Wall impingement model (SLDs, Supercooled Large Droplets)

• Simulates droplet-wall interactions
• Droplet rebound and splash
• Large droplet sizes > 50 microns
• Improved collection efficiency prediction in SLD conditions
• Applications to aircraft icing simulations

Lagrangian Dispersed Phase

Lagrangian Dispersed Phase (LDP)

• Taylor analogy breakup model
• Cascade atomization & drop breakup
• Wave breakup model
• Hybrid wave breakup model
• Primary breakup models

Special physics:

• Multiple parcel injection
• Co-axial, cross-streams
• Spray angle (input)
• Variable parcel velocity

Homogenous Mixture Model

• Multiphase flow, also small droplets and bubbles
• Additional equation for volume fraction
• Evaporation, condensation, cavitation

Non-Homogenous Mixture Model

• Model accounts for slip/drift velocity between the phases
• Turbulent dispersion can be included in drift velocity

Cavitation models:

• Zwart-Gerber-Belamri model, Schnerr-Sauer model & Singhal model
• Secondary phase compressibility and material density overrides for cavitation

Volume of Fluid (VOF)

• Distinct non-mixed phases e.g. gas-liquid interface
• Artificial compression for sharp interfaces
• Surface tension effects
• Gravity wave inflow
• Wetting angle definition accounts for wall adhesion

Applications

• Sloshing, ditching
• Boat flows

Non-Newtonian Model for shear-thickening and shear-thinning fluids

Four viscosity models:

• Power law model
• Herschel-Bulkley model
• Cross model
• Carreau model

Physics and source Terms  

• Axisymmetric swirl
• Sinusoidal body force
• Porous media
• Mass injection
• Stator blade model
• Synthetic jet doublet
• Vortex-like source
• Plasma actuator model
• Helicopter rotor model
• Volumetric source terms
• User-linked subroutines

Hypersonics

High-temperature gas dynamics

• Two-temperature non-equilibrium model
• Tannehill curve fits for equilibrium air
• Ionized air viscosity model
• Species properties for Earth/Mars entry and ablation over a five-temperature range up to 30,000 K
• Catalytic wall conditions
• Ablative wall conditions

Applications

• Reentry and aero-heating
• Hypersonic plumes
• Scramjets