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FlowVision CFD software is used in various sectors for many different applications. Below is a list of foremost sectors FlowVision is preferred and mostly performed simulation tasks in these areas:

Automotive

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In Automotive industry, FlowVision is used for various simulation purposes ranging from well-known aerodynamics problems to extensive multi-phase and multi-physics problems such as tire aquaplaning or torque conversion in gearboxes.

  • Car Tire Aquaplaning. FlowVision’s unique FSI integration with ABAQUS allows for simulating 2-phase flow around rotating and elastic tire bodies. In such cases, effectiveness of tire tread patterns are compared to reduce the risk of hydroplaning and to increase skid-resistance.
  • Lubricant Dynamics (Gear-Boxes, Torque Converters, Oil Pumps, Bearings). FlowVision is highly capable of simulating advanced physics involved in lubricant dynamics of automobiles. 2-Phase flow with free surface tracking, rotating bodies, unique Gap model for extremely narrow clearances and 2-way coupled FSI simulations are among FlowVision’s special capabilities in this area.
  • Engine Cooling. FlowVision is completely suited for calculating conduction and convection heat transfer in stationary and moving parts of automobile engines.
  • Fuel Tank & Oil Pan Sloshing. FlowVision’s Extended VOF Method helps in simulating transient free surface tracking in sloshing problems.
  • Thermal Loading in Brake Systems. In order to ensure desired thermal performance of automobile brakes, FlowVision is used for simulating conduction and convection heat transfer mechanisms in cases such as interaction between brake disks and lining pad.
  • Gas Dynamics in Reciprocating & Rotary Engines. FlowVision’s moving body technology allows for defining any type of piston and valve movements uniquely including full closure of valves. Resultantly, all desired stationary and moving parts can be modeled in FlowVision to solve for physics of gas dynamics including injection and spraying.
  • Combustion & Thermal Loading in Engine Blocks. There are various combustion models with mass transfer in FlowVision and additionally, localized and time-based spark ignition regions can easily be defined.
  • Radiators & Oil Coolers. Radiator and oil coolers used in automobiles usually consist of very small and large number of parts which results in a crucial problem for CFD
  • External Aerodynamics. Air flow around a car is typically simulated for purposes such as drag minimization, down force maximization or driving stabilization. FlowVision solvers are highly accurate in predicting these phenomena and, in addition to that, importing geometries without simplifications and without manual work brings FlowVision one step forward in CFD simulations of car external aerodynamics.
  • Water Soiling. Thanks to FlowVision’s Extended VOF Method, water soiling on surfaces such as car windows are accurately simulated.

See details about FlowVision possibility for Automotive industry

 

Buildings & Construction

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  • HVAC Simulations. To ensure thermal comfort and efficiency of HVAC applications, heat transfer mechanisms of conduction, convection, radiation and conjugate heat transfer between multiple solid and fluid regions are simulated in FlowVision. In addition, FlowVision’s meshing approach accompanied with unique Gap Model allows for modeling complex geometries such as heat exchangers and heating coils with very narrow and high number of clearances.
  • Wind Loads. Natural wind loads and air flows due to microclimates play vital role in various constructional design processes. Since experimentation is unreasonable in such cases, CFD simulations are highly preferred to determine critical wind loads and their locations. Apparent wind experienced by moving bodies can also be accurately calculated with FlowVision moving body technology.
  • Water Loads. Water flows observed in rivers, due to crushes such as dam breakings or as a consequence of natural disasters like floods can be simulated with FlowVision as multi-phase open channel flows. Resultantly, water flow patterns and loads generated on bridges or any kind of structures can be calculated.
  • Pedestrian Wind Comfort. Unfavorably increased wind speeds due to buildings lead to uncomfortable and even dangerous conditions for pedestrians. In order to avoid this phenomenon, pedestrian wind comfort should be assured before construction, mostly by computational simulations. These cases shall inevitably include large solution domains where Cartesian grid system, being computationally efficient, is preferable
  • Natural Ventilation.  Naturally ventilated, either wind or buoyancy driven, air flow is simulated with FlowVision with the main purposes of designing energy efficient and environmentally friendly buildings that can breathe clean fresh air. In the context of wind driven natural ventilation, wind flows at different directions and with respect to height should be defined and for buoyancy driven cases, thermal boundary conditions are introduced. In the first one, FlowVision Formula Editor serves as a very user friendly way to define wind speed as a function of height and in both cases, Cartesian grid technology is relatively highly efficient in regards of computational costs
  • Air Quality & Pollutant Dispersion. Low quality air with pollutants is dangerous for human health and these air pollutants range from volatile organic compounds to odours or even radioactive elements. Different pollutants can be in the forms of solid particles, liquid droplets, or gases and some also interact with each other to form other types of pollutants. In this extensive context, FlowVision is highly capable of simulating mass transfer, phase transfer, reactive flows and particle loaded disperse phase flows which, as a sum, constitutes a complete solution for air quality and pollutant dispersion CFD simulations.
  • Explosion & Fire Dynamics. In this area, FlowVision allows for performing various types of simulations such as modeling fire-driven flows, tracking and visualization of smoke dispersion, smoke and heat transfer from fires, evacuation simulations, explosion and atmospheric dispersion of combustion products and toxic materials. These problems, including advanced physics phenomena, are effectively and accurately handled with FlowVision thanks to multi-phase, disperse phase and combustion modules offered.

Aerospace & Defense

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  • External Aerodynamics. Cartesian grid with SGGR (Sub Grid Geometry Resolution) technology allows catching most complex body surfaces and one-button replacement of geometries for revision works in projects. Additionally, high resolution and orthogonal boundary layer meshes can be generated on boundaries by using OBL method of FlowVision. Thanks to aforementioned and additional capabilities; FlowVision is extensively used for various external aerodynamics simulations in aviation industry such as calculation of aerodynamic forces & coefficients, engine intake & hull optimization, aerodynamic compatibility investigation and detailed flow investigation of wakes, separation points and turbulence onset.
  • Subsonic, Transonic and Supersonic Flows. FlowVision’s general Navier-Stokes solver is capable of resolving subsonic, transonic, supersonic and hypersonic flows. This avoids necessity of using different solvers in a solution. Users are not expected to manually address regions of different flow regimes and shock generation points.
  • Simulation of Moving Flaps, Landing Gears, etc. FlowVision’s advanced moving body technology on Cartesian grid allows any type of rotational and translational body motions including inertial force and movement calculations. In this context, dynamic coefficients can be obtained through transient simulations where angle of attack is changing dynamically. In case of very small clearances occurring in regions like flap-wing interfaces; FlowVision’s unique gap model is applied to resolve these clearances which are almost impossible to mesh with traditional approaches.
  • Store Separation. In FlowVision, 6-DOF motion of objects can be defined or calculated dependent on external and aerodynamic forces. Meshing technology allows for objects to partially or fully enter/exit computational region. Objects can be allowed to interfere within each other and with computational volume borders.
  • Water Landing & Splashdown. Hydroplanes and helicopters can be modeled as either rigid moving bodies in FlowVision or as deformable objects in a FSI application. By allowing/not allowing each translational and rotational degree of freedom, dynamic stability of aerial vehicles landing on water can be accurately analyzed. In such cases, FlowVision’s extended VOF method serves for high accuracy free surface tracking.
  • Gas Turbines & Compressors. In the case of rotating turbomachines and their parts; FlowVision allows for simulations with rotating bodies with automatic grid update and also sliding mesh which is mostly preferred for rotor/stator interactions. In addition to that, moment inertia of blades can be defined by user as a result of which inertial rotations are calculated based on aerodynamic forces. Once FlowVision is integrated with a FEA code such as ABAQUS, aeromechanics analysis can be performed to determine flutter characteristics. Finally, various combustion models are included in FlowVision for simulating reacting flows in combustion chambers and internal combustion engines.
  • Fuel Tank & Oil Pan Sloshing. FlowVision’s Extended VOF Method helps in simulating transient free surface tracking in sloshing problems. Free surface movement of fuel/oil can be accurately tracked under various user-defined, time-based acceleration scenarios. Settlement in a fuel tank can be observed in specific cases such as upside down flying of an airplane.
  • Aeroelasticity. Through a user-friendly multi-physics manager, 2-way coupled multi-physics simulation environment including FlowVision and ABAQUS can easily be established without need for any 3rd party integration tools. This allows for simulating static/dynamic aeroelasticity problems and determining aeroelastic equilibrium of such materials. In case of turbomachine blades and wings; an aeromechanics approach via FlowVision results in accurate flutter prediction.

See details about FlowVision possibility for Aviation industry

Chemical Industry

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In the scope of chemical processes and applications; FlowVision is capable of simulating both mass transfer mechanisms and multiphase flows with immiscible, mixed and free surface conditions or with presence of dispersed phases. Electro-hydrodynamics calculations are also included in extensive FlowVision CFD solver.

  • Multiphase Flow Modeling. FlowVision’s meshing and modelling approach brings high level of easiness for modelling multi region flows with more than one phase with conjugate exchange mechanisms. On the other hand, two or more phases interacting in the same region of fluid domain are also accurately simulated in FlowVision.
  • Combustion. Combustion module, included in FlowVision as a mass transfer mechanism, consists of different combustion models; Zeldovich, Arrhenius, Magnussen, Arrhenius-Magnussen, and EDC. Using these models, user is allowed to alter various parameters and simulate the actual combustion chemistry in computational environment.
  • Mixing. FlowVision users can simulate both simple mixing of components (substances) and mixing accompanied by chemical reactions between the components.
  • Reacting Flows. FlowVision allows for calculation of both reversible and irreversible reactions without limiting number of substances to be included. In this compelling area of simulation, FlowVision is highly preferable thanks to its large diversity of capabilities accompanied with easy and configurable user modules.
  • Particle Flows. Dispersed medium model implemented in FlowVision allows solving the problems of flow of liquid/gas in porous carcass, motion of solid particles and droplets in liquids or gases and motion of bubbles in liquid. Phase interactions between continuous and dispersed phases include mass (ablation/condensation), momentum (force interaction) and energy (heat exchange) exchange mechanisms.
  • EHD. FlowVision Electro-Hydro Dynamics solver is used for calculation of a variety of phenomena including stationary electric fields, ponderomotive forces, Joule (ohmic) heating and motion of electrically charged bodies in electric field. Simulating an EHD problem in FlowVision; dependence of electrical conductivity end dielectric permittivity on concentration of agents, temperature, etc. can be observed or distribution of electric potential and electric field strength can be visualized in computational volume.

Electronics

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Modern electronic devices are getting complex and, at the same time, smaller in size which brings high level of complexity in geometries and contacts with extremely small parts, gaps and clearances. Accurate simulation of such devices requires resolution of fluid flow and heat transfer around and between included components.

  • Simulation Directly on CAD Geometries without Simplification. FlowVision SGGR technology allows for coping with the highest level of topology details. In classical CFD approach, electronic device geometries are gone through extensive simplification procedures whereas FlowVision is capable of directly importing CAD files including contacts and small gaps.
  • Complex Assemblies with Many Parts & Thin Clearances. CAD assemblies can be imported to FlowVision including cases where bodies are intersecting or in contact with each other. Additionally, thin clearances down to microns can be resolved with FlowVision unique Gap Model.
  • Heat Sinks. Any type of heat sink can be modeled in FlowVision. Complex shaped solids with large surface areas in contact with heat generating bodies are assigned as heat conducting solids which are also included in conjugate heat transfer mechanism with the cooling fluids.
  • Passive & Active Cooling. Cooling of electronic components are performed either actively by use of energy (through a fan etc.) or in a passive manner by only inserting heat transmitting materials such as heat sinks. In FlowVision, forced and natural convection between solid and fluid regions and heat conduction in solids are accurately calculated. Additionally thermal bridges are formed between solid bodies in contact.
  • Heat Conduction in Solids. In FlowVision, arbitrary sub-region(s) can be assigned as solid volumes and preferred solid materials can either be selected from FlowVision materials library or created by user with desired physical properties such as thermal conductivity.
  • Natural & Forced Convection. In presence of temperature difference between stationary fluid continuums and solid surfaces; natural convective heat transfer mechanism and resultant buoyancy driven fluid motion are simulated by FlowVision solver with energy equation. On the other hand, forced convection flows can be easily generated by rotating fans and other turbomachines or by means of appropriate boundary conditions.
  • Conjugate Heat Transfer. In cases where one fluid and one solid sub-region are in contact, face(s) in contact can be coupled to each other to activate conjugate heat transfer mechanism. In one simulation, there can be many coupled surfaces between different sub-regions, phases and substances.
  • Thermal Resistance between Electronic Components. Assemblies are directly imported into FlowVision and surface offsets can be created in required contact regions. In the clearances created by surface offsetting; gap heat transfer coefficient is entered by user in order to simulate thermal resistance and bridging between solid components.

Energy

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  • Emergency Valve Closings in Oil & Gas
  • Open-Channel Flows
  • Nuclear Reactors Cooling
  • Wind Turbines
  • Wind Farms
  • Hydraulic Turbines
  • Industrial Burners

Medicine & Life Science

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  • Living Heart Simulation
  • Elastic Hearth Valve Simulation
  • Eye Cataract Removal Simulation
  • Spray Distribution along Nasal Cavities

Naval Engineering

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  • Small, Transient and Large Froude Numbers
  • Free Surface Flows
  • Propellers and Rudders
  • Hull Drafting & Dynamic Trimming
  • Buoyancy & Floating
  • Wave Formation & Propagation
  • Tank Sloshing Loads
  • Ship Towing Resistance

Sports

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FlowVision is a state of the art CFD tool with brilliant modeling capabilities in presence of non-stationary objects in the computational domain. Movement of sportsman is one of the very complex motion definitions for CAE applications. Thanks to FlowVision’s sophisticated meshing and moving body approaches, laser scanned human geometries and time dependent motions can easily be imported to FlowVision. Resultantly, very accurate flow calculations around transiently moving sportsman are readily performed in FlowVision.

Various sports activities are modeled in FlowVision and below are some of the examples:

  • Skater Modeling & Dynamic Simulation
  • Ski-Jump Modeling & Dynamic Simulation
  • Sleighing & Bob Sleighing
  • Swimming & Submerging

In all of the above simulations; the common approach consists of following main steps:

  • Capturing Motion of Sportsman by Laser Scanning
  • Importing Time-Based Motion Data to FlowVision as Point Clouds
  • Definition of Moving Body in FlowVision with Pre-Defined Positions at Each Time Frame
  • Proceeding with Regular CFD Modeling either as One-Phase or Coupled with Free Surface Tracking

Turbo-Machines

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  • Torque & Power Calculations
  • Axial & Centrifugal Machines
  • Fans & Compressors
  • Hydraulic & Wind Turbines
  • MRF, Sliding Mesh and Moving Bodies
  • Pre-Defined & Fluid Induced Rotations
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