Finite Element and CFD Based Simulation of Casting

Using Sophisticated FEA and CFD technologies, Enteknograte Engineers can predict deformations and residual stresses and can also address more specific processes like investment casting, semi-solid modeling, core blowing, centrifugal casting, Gravity Casting (Sand / Permanent Mold / Tilt Pouring), Low Pressure Die Casting (LPDC), High Pressure Die Casting (HPDC), Centrifugal Casting and the continuous casting process. The metal casting simulation using FEA and CFD based technologies, enable us to address residual stresses, part distortion, microstructure, mechanical properties and defect detection include:

  • Solidification: Micro Porosity, Gas Porosity
  • Stress:  Hot Tears, Surface Cracks, Residual Stresses, Cold Cracks, Distortion, Die Fatigue
  • Metallurgy Specifications: Stray Grain, Freckle, Segregation, Distortion
  • Pouring: Misruns, Air Entrapment, Oxides, Surface Defects, Cold Shuts, Turbulences, Inclusions, Core Gases

Casting Simulation Software include: AutoCAST, CAPCAST, MAGMASoft, Nova-Solid/Flow, ProCAST and FLOW3D Cast. Our base softwares for casting simulation is ESI ProCast, MAGMASoft and Flow 3D Cast.

With deep knowledge in Finite Element and CFD based Simulation Technologies, Enteknograte Engineers can predict evaluations of the entire casting process, including filling and solidification defects, mechanical properties and complex part distortion. It enables you to understand the effects of design changes and provides a basis for correct decision-making, from the earliest stages of the manufacturing process and optimize your time and cost.

Advanced Technology

We resolve any type Casting with the most detailed and accurate methodology

Reduce Development Cost

Enteknograte FEA and CFD service enables you to ensure the Casting cost optimiziation of parts in the design phase

Test Before Manufacturing

Applied from early on in the part design phase, we can investigate the part casting detail and quality

Casting Processes:

Low pressure die casting

Low pressure die casting, LPDC, is a process in which a ceramic tube is connected to a steel die above and extends into a furnace of molten metal below. The furnace is then pressurized to fill the part by forcing fluid up through the sprue. Once the casting has solidified the air pressure is reduced allowing the rest of the metal still in liquid form in the tube to recede back into the furnace. Low pressure die casting is used for high production rates, thicker parts up to 2.5 mm, for better surface quality, and when high temperature heat treatment is needed to improve strength.

Based on problem description, FEA or CFD tools used with Enteknograte engineering team to better design many aspects of a low pressure die casting through modeling thermal die cycling, filling, and solidification including thermally induced stresses and displacements. Better designs before production help alleviate trial and error through experimentation and bring designs to production more quickly. Both of which help save time and reduce costs.

High Pressure Die Casting (HPDC)

The simulation of die casting needs to replicate the following typical problems: Patterns and temperatures in the melt flow: last filled areas, venting of the die, aggregation of die agents, ‘dead areas’ in the runner, turbulences in the melt, disintegration of the melt and merging of melt fronts, cold shuts, or weld lines. Temperatures of the die: the complete die filling (especially during thin-wall casting), cycle times, core wear, adhesive tendency, or heat loss when spraying. Solidification of the casting: the creation of shrinkage cavities and pores, hot tears, microstructure formation, possible feeding in the final pressure phase or during local squeezing, as well as the formation of residual stress and consequently arising distortion.

Thermal Die Cycling

Thermal die cycling simulations are essential for high pressure die casting, since the same die is used repeatedly to produce thousands of castings. Maintaining consistent die temperature becomes more challenging over time due to warping in the die pieces leading to dimensional instabilities. With using Advanced CFD an FEA tools based on problem, the temperature distributions resulting from the combined effects of die heating, spraying and air blow-off, as well as the location of cooling channels and inserts can be accurately and efficiently predicted.

Shot Sleeve Optimization

The goal of a properly designed shot sleeve profile is to push the metal into the die quickly enough to avoid premature solidification, which can cause incomplete or defective filling. However, if the piston moves too fast, the liquid metal will fold over, trapping air that may appear as internal defects in the final cast part.

Filling Simulations

The most complex challenge in HPDC simulation is accurately tracking metal as it enters the die cavity under high pressure and at speed. The resulting splashing of the metal throughout the cavity presents a significant challenge to prediction of defects for any software. Using advanced simulation tools, we can determine the location of gates to ensure the best flow pattern, the location of overflows to ensure the defects flow to them, and the presence of early solidification.

Modeling Solidification

FEA and CFD helps engineers investigate the formation of internal porosity that can affect the quality of the final part. Also enables the investigation of segregation in binary alloys. Finally, a detailed temperature history helps determine whether chills or cooling lines need to be added or modified, and whether the initial metal temperature should be changed. Numerical Simulation with FEA or CFD enables engineers to investigate the formation of internal porosities, thermally induced stresses, and segregation in binary alloys.

Goals & Objectives of HPDC Simulation:

  • Reduce iterations in tooling development
  • Reduce process development time: faster achievement of a stable process window
  • Better process understanding: helpful when negotiate with customers about necessary part design changes

Typical defects in high pressure die casting:

  • Misruns: Melt solidifies before filling is completed
  • Cold shuts: Imperfect fusing of molten metal coming together from opposite directions in a mold
  • Porosity: small holes caused by insufficient feeding or dissolved gas
  • Air and oxides inclusions
  • Cold flakes: floating crystals, solidified at shot sleeve walls and transported into cast par

Sand Casting

Sand casting, the most widely used casting process, utilizes expendable sand molds to form complex metal parts that can be made of nearly any alloy. Because the sand mold must be destroyed in order to remove the part, called the casting, sand casting typically has a low production rate. The sand casting process involves the use of a furnace, metal, pattern, and sand mold. The metal is melted in the furnace and then ladled and poured into the cavity of the sand mold, which is formed by the pattern. The sand mold separates along a parting line and the solidified casting can be removed.

Some smaller sand cast parts include components as gears, pulleys, crankshafts, connecting rods, and propellers. Larger applications include housings for large equipment and heavy machine bases. Sand casting is also common in producing automobile components, such as engine blocks, engine manifolds, cylinder heads, and transmission cases.


Can produce very large parts
Can form complex shapes
Many material options
Low tooling and equipment cost
Scrap can be recycled
Short lead time possible


Poor material strength
High porosity possible
Poor surface finish and tolerance
Seondary machining often required
Low production rate
High labor cost

Applications:Engine blocks and manifolds, machine bases, gears, pulleys

Centrifugal Casting

In centrifugal casting, a mold is rotated at high speed while the molten metal is poured into it. The molten metal is thrown radially outwards to the interior of the mold, where it solidifies as it cools. The higher pressure associated with the centripetal acceleration forces pushes the defects towards the rotational axis.

Tilt pour casting simulations

Lightweight aluminum parts used in water sports rafting equipment require high-quality finish and are cast to be ideally devoid of surface and entrained defects. This simulation of the tilt pour casting process shows potential regions of trapped surface oxides and entrained air through the filling process. Knowing the movement of these defects helps metal casters design better gating, runners and risers to eliminate defects within the casting. 

Continuous Casting

Continuous casting is the process where molten steel is solidified into semi-finished billets, blooms, or slabs for subsequent rolling in finishing mills. In continuous casting, liquid steel is transferred in a ladle to the casting machine. When the casting operation starts, the sliding shutter at the bottom of the ladle is opened and the steel flows at a controlled rate into the tundish and from the tundish into one or more molds.

Casting Simulation Features:

Thermal aspect of Casting Simulation

The heat release associated with phase changes such as solidification and solid phase transformations is described by an enthalpy formulation. Casting issues addressed by the thermal solver include:

  • Hot spots and Thermal Modulus
  • Macro and micro shrinkage
  • Die cooling and heating optimization
  • Runner and riser design
  • Pin Squeeze

Stress field in Casting Simulation

Coupled stress calculations for precise prediction of casting, using fully coupled thermal, fluid and stress simulations with elasto-plastic or elasto-viscoplastic material behaviors for investigating :

  • Thermal and mechanical contact
  • Hot tearing and crack
  • Distortion and deformation
  • Fatigue
  • Stresses in the casting and die

Shrinkage and Gas Porosity

The phase transformations in solidification of metal are accompanied by shrinkage and sudden changes in the solubility of alloying elements, resulting in negative side effects as micro- and macrosegregation and the formation of gas and shrinkage porosities.

The mixed gas and shrinkage nature of porosity makes it difficult to identify and indicate the dominant source. It is usually believed that formation of gas and shrinkage porosity has different dependencies on the process conditions, and consequently, the gas and shrinkage pores are usually regarded as independent microstructural features.

In this contribution, it is shown that in high-pressure die-castings, gas pores can lead to the formation of shrinkage porosity under specific conditions. This is because the air/gas in the gas pores is an efficient heat-insulating medium. Therefore, presence of gas porosity can retard heat transfer in the liquid melt as compared to similar regions without gas porosity. Consequently, the local solidification rate is lower in such regions, leading to shrinkage porosity formation.For the computation of the porosity criterion the thermal gradient, cooling rate and solidification rate must be known. Using  advanced FEA softwares, Enteknograte engineers simulate detailed casting to determine parameters and further calculations of the shrinkage and Gas cavity.

Microstructure & Heat treatment

The formation of microstructures associated with solid state phase transformation during cooling or heat treatment simulated with special FEA or CFD tools using models based on Time-Temperature-Transformation (TTT) or Continuous Cooling- Transformation (CCT) diagrams. Mechanical properties determined from the calculated microstructure.

FEA Simulation of Grain Structure

The casting industry has seen rapid advancements in commercially available numerical simulation technology. FEA based Software enable us not only for thermal and flow modeling, but for calculation of grain structure, porosity, hot tearing, and solid-state transformation. In this investment casting process, the alloy starts to solidify at the contact with a chill under the form of very fine grains. In the ultimate case, when a single crystal is required for extreme applications, then one grain is selected through a narrow channel under highly controlled solidification conditions. Enteknograte Engineers computes the grain structure formation during solidification using FEA based Softwares.

CFD and FEA consultant at Enteknograte

FEA and CFD Based Simulation

Creep Fatigue durabilty Abaqus, Ansys, femfat, fe-safe ncode nastran, Matlab
Creep-Fatigue Interaction Simulation
Engine Fatigue Life FEA Simulation Abaqus Ansys Nastran Fe-safe Ncode Design - Enteknograte
Engine Fatigue Life Prediction
CFD FEA abaqus ansys fluent OPENFOAM CODE-ASTER star ccm siemens heeds autodyn ls-dyna finite element

Considering complexity and needs to have new procedure and constitutive equation, we must try to develop new FEA and CFD based software to overcome engineering challenges.

FEA and CFD based Programming needs experience and deep knowledge in both Solid or fluid mechanics and programming language such as Matlab, Fortran, C++ and Python.

Enteknograte’s engineering team use advanced methodology and procedure in programming and correct constitutive equation in solid, fluid and multiphysics environment based on our clients needs.

We use subroutine’s with programming languages such as Fortan, C and Python in CFD and FEA sofware such as Abaqus, Ansys, Fluent and Star-ccm+ to add new capability and Constitutive equation.

Enteknograte use Mathematical Methods and Models for Engineering Simulation. We, focuses on numerical modelling and algorithms development for the solution of challenging problems in several engineering sectors specialized in the development of software for the numerical discretization of partial differential equations, linear algebra, optimization, data analysis, High Performance Computing for several engineering applications.

Together, we enable customers to reduce R&D costs and bring products to market faster, with confidence.

Do you need more information or want to discuss your project?

Reach out to us anytime and we’ll happily answer your questions
Contact us

A world-class consultancy for engineering, technology, innovation, our industry know-how and technical expertise is unrivalled.

Do you need more information or want to discuss your project?

Reach out to us anytime and we’ll happily answer your questions
Contact us

We use advanced virtual engineering tools, supported by a team of technical experts, to global partners in different industries.

Do you need more information or want to discuss your project?

Reach out to us anytime and we’ll happily answer your questions
Contact us

Our Software team is made up of developers, industry experts and technical consultants ensuring we can respond to each client’s individual needs

Do you need more information or want to discuss your project?

Reach out to us anytime and we’ll happily answer your questions
Contact us

Real world Simulation: Combination of experience and advanced analysis tools

Calling upon our wide base of in-house capabilities covering strategic and technical consulting, engineering, manufacturing ( Casting, Forming  and Welding) and analytical software development – we offer each of our clients the individual level of support they are looking for, providing transparency, time savings and cost efficiencies.
Enteknograte engineers participate in method development, advanced simulation work, software training and support. Over experiences in engineering consulting and design development, enables Enteknograte’s engineering team to display strong/enormous client focus and engineering experience. The Enteknograte team supports engineering communities to leverage CFD-FEA simulation softwares and methodologies. It leads to the creation of tailored solutions, aligned with the overall product development process of Enteknograte clients.

CAE Simulation: CFD, FEA, System Modeling, 1D-3D coupling

Integrated expertise covering every Equipment component analysis. From concept through to manufacture and product launch, and for new designs or Equipment modifications, we provide engineering simulation expertise across projects of all sizes. Simulation has become a key enabling factor in the development of highly competitive and advanced Equipment systems. CAE methods play a vital role in defining new Equipment concepts.

metal forming simulation: ansys abaqus simufact forming
Metal Forming Simulation
Automotive Engineering: Powertrain Component Development, NVH, Combustion and Thermal simulation, Abaqus, Ansys, Ls-dyna, Siemens Star-ccm Enteknograte
Crash Test and Crashworthiness
Finite Element and CFD Based Simulation of Casting esi procast
Casting Simulation
Additive Manufacturing: FEA Based Design and Optimization with Abaqus, ANSYS and Nastran
Additive Manufacturing
MultiObjective Design and Optimization of Turbomachinery: Ansys Fluent, Numeca fine turbo, Siemens star-ccm+, simulia abaqus, Ls-dyna, Matlab
Design of Turbomachinery
CFD Heat Thermal simulation: Abaqus, Ansys Fluent, Star-ccm+, Ls-dyna, Matlab
CFD Heat Transfer
Fluid Structure Interaction FSI with Ansys Abaqus, Fluent Star-ccm Comsol
Fluid Structure Interaction FEA CFD FSI Abaqus Ansys Comsol LS-dyna Wind Turbine Enteknograte
Fluid Strucure Interaction
Exhaust Acoustics and vibration: ESI va one, msc actran, abaqus, ansys, fluent, star-ccm , nastran
Acoustics & Vibration
Aerodynamic Simulation CFD Ansys Fluent Siemens Star-ccm+ Numeca xflow cradle
Aerodynamic Simulation
Ansys Fluent, Siemens Star-ccm+ Numeca fine , Avl Fire, Matlab
Combustion Simulation
Multiphase Flow Simulation Abaqus, Ansys, Fluent, Siemens Star-ccm+, Matlab
MultiPhase Flow Simulation
Fatigue Simulation Abaqus Ansys FE-Safe NCode Design Life FEA Finite Element Enteknograte
Creep & Fatigue
Multibody dynamics MBD Abaqus, Ansys Fluent, Star-ccm+, Ls-dyna, Matlab, fortran , C++, Python
Multi-Body Dynamics (MBD)
composite impact simulation , Comsol Abaqus, Ansys, Fluent, Siemens Star-ccm+, Aerospace and defenceMatlab, Fortran, Python CFD FEA
Composite Design
welding FEA Simulation Simufact Welding ESI Sysweld Abaqus Ansys Enteknograte
Welding Simulation
Optimization of Wind Turbine Composite Fracture Mechanic Damage Design Abaqus Ansys Finite Element CFD Enteknograte
Multi-Objective Optimization
CFD and FEA based Fortran, C++, Matlab and Python Programming
Advanced Fortran, C++, Matlab & Python Programming