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FLUENT는 비압축성(low subsonic)에서 압축성(supersonic and hypersonic) 및 천음속(transonic) 유동 등 유동의 전 영역을 해석할 수 있는
CFD전용 Solver이다.
FLUENT는 수렴가속화를 위한 Multigrid 방법과 연계된 여러 가지 형태의 Solver option을 제공하며, 또한 여러 유속 영역에서 최적의 해석 효율과
정확도를 보장한다.
FLUENT는 완벽한 격자 유연성(mesh flexibility)과 솔루션에 기반한 적응 격자(mesh adaption)기법과 연계한 다양한 수치해석 모델을 제공함으로써,
층류 및 난류 유동, 여러 형태의 열전달 문제, 화학반응 문제, 다상유동 문제 등 다양한 물리적ㆍ화학적 현상들을 사용자가 정확하게 예측할 수 있도록 한다.
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| * 아래의 제목을 클릭 하시면 해당내용을 확인 하실 수 있습니다. |
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 일반적인 열 유동 해석 기능 (General Modeling Capabilities) |
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 2차원 및 3차원 유동, 2차원 축대칭 및 축대칭 선회 유동
다양한 형태의 비정렬 격자의 사용(triangle and quadrilateral elements for 2D; tetrahedral, hexahedral, polyhedral, prism, and pyramid elements for 3D)
정상 상태 및 비정상 상태 유동
모든 유속 영역 (low subsonic, transonic, supersonic, and hypersonic flows)
점성 및 비점성 유동, 난류 유동
뉴톤 유동 , 비 뉴톤 유동
모든 형태의 난류 모델 (k-ε, k-ω, RSM, DES, LES 등)
다양한 열전달 해석 (자연대류, 강제 대류, 유체/고체 복합 열전달, 복사 열전달, 태양열 부하를 포함한 열전달)
화학반응 문제 (균일 및 불균일 연소모델, 표면 퇴적/반응 모델을 포함하는 혼합 및 반응모델)
자유표면 및 다상유동 문제 (열전달 및 화학반응 포함)
분산상(입자, 액적 및 기포 등)에 대한 라그랑지 궤적 계산(스프레이 및 벽면 필름 모델 포함)
상변화 (용융 및 응고 해석 모델, 캐비테이션 모델, 습증기 모델)
다공매체 모델(비등방성 투과도, 내부저항도, 고체 열전도와 틈새속도의 계산 기능)
럼프드 파라메터 모델 (팬, 라디에이터, 열교환기)
변동 격자 기법(Moving and Deforming Mesh)
관성(stationary) 및 비관성 (rotating or accelerating) 좌표계
다중 기준좌표계(MRF)와 미끄러짐 격자(sliding mesh) 옵션
동익(rotor)과 정익(stator)의 상호작용 해석을 위한 혼합면(mixing plane) 모델
공력 소음 해석을 위한 다양한 모델
질량, 운동량, 열, 화학종 등의 생성항
다양한 재료의 물성치에 대한 데이터베이스
GT Power와 WAVE 프로그램과의 다이나믹 커플링
다양한 전용 모델 (연료전지, 전자기유체역학, 개체수 평형, 연속 섬유 모델 등)
사용자 정의 함수를 통한 넓은 사용자 최적화 능력 |
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| 격자 활용 능력 (Mesh Capabilities) |
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삼각형, 사각형, 사면체, 육면체, 다면체, 프리즘, 피라미드 및 혼합형 격자 사용
유체/고체 영역 인터페이스를 포함하는 비등각(Non-conformal) 격자의 인터페이스 제공
해석 변수 또는 관련 변수(y+, wall proximity 등)에 기반한 적응 격자 기법
: Conformal adaption on triangular and tetrahedral meshes
: Hanging node adaption for all element types
: Automatic interpolation of solution after mesh refinement
: Dynamic hanging node adaption at user-specified intervals
: Geometry-based adaption
격자의 질을 향상시키기 위한 다양한 도구
생성된 격자를 적절히 처리하는 다양한 방법
: Scaling, translation, rotation, merging, fusion, and separation
: Deletion, deactivation/reactivation, replacement and appending of cell zones
하이브리드 격자 생성 유틸리티
격자와 격자간 데이터 보간 기능 |
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| 수치 해석 기법 (Numerical Method) |
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Three solver options : pressure-based implicit, density-based implicit and density-based explicit;
: Finite-volume method based on fully unstructured meshes
: Adaptive time stepping option for implicit schemes
: Dynamic memory allocation
: Single and double precision executables
Pressure-based solver
: Pressure-based segregated solution algorithms including SIMPLE, SIMPLEC, and PISO
: Pressure-based coupled solution algorithm
: Multiple choices for discretization schemes for convection terms including first-order upwind, power-law, second-order upwind, QUICK, MUSCL, central differencing (for LES), and bounded central differencing (for LES)
: First-order and second-order implicit time discretization schemes
: Multiple choices for pressure interpolation schemes including standard, PRESTO, linear, second-order, and body-force weighted interpolations
: Implicit treatment of body forces
: Algebraic multigrid (AMG) linear equation solver with V, W, F, and flex cycles, and Gauss-Seidel relaxation method
: Non-iterative transient solution options
Density-based solvers
: Preconditioning for incompressible and mixed regime flows
: Coupled solution for all mean flow qualities
: Decoupled (segregated) solution of turbulence, radiation, and user-defined scalar transport equations
: Multiple choices for discretization schemes including first-order upwind,
second-order upwind, MUSCL, and low diffusion flux second order scheme (for LES)
: First-order and second-order implicit time discretization schemes
: Explicit solver
: Multi -stage (Runge-Kutta) time-stepping algorithm
: Full approximation scheme (FAS) Multigrid, local time stepping and implicit residual smoothing convergence acceleration
: Explicit global time-stepping option for time-accurate solutions
: Implicit solver
: Full Newton-type linearization of all fluxes and source terms
: Algebraic multigrid (AMG) block matrix linear equation solver with V and F cycles; Gauss-Seidel relaxation method |
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| 난류 모델링 (Turbulence Modeling) |
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Multiple choices for k-ε models including standard, realizable, and RNG models
: Submodels in k-ε models for buoyancy and compressibility effects
: RNG submodels for swirl, low Reynolds number effects (differential viscosity), and analytical formula for turbulent
Prandtl/Schmidt numbers for k, ε, energy, and species
K-ω turbulence models, with shear correction and transitional flow options
Full Reynolds stress model (RSM) including wall-reflection model and linear or quadratic pressure-strain model
Spalart-Allmaras one-equation (eddy-viscosity transport) model
Detached eddy simulation (DES)
Large eddy simulation (LES)
: Subgrid scale stress models (Smagorinsky-Lilly and WALE)
: Dynamic subgrid scale stress models
(dynamic Smagorinsky-Lilly and dynamic kinetic energy transport)
: Werner-Wengle wall functions
V2F turbulence model (additional purchase required)
Near-wall modeling options
: Standard wall functions
: Non-equilibrium wall functions sensitized to pressure gradient
: Enhanced wall treatment model
Low Reynolds number k-ε models
Artificial triggering of turbulence using user-specified laminar zones for transitional flow modeling (fixed transition)
Customizability of model constants, turbulent and subgrid scale viscosities, and source terms in turbulence
transport equations
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| 열전달 해석 (Heat Transfer) |
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Laminar/turbulent forced convection including viscous heating
Natural and mixed convection with optional Boussinesq approximation
Conjugate (fluid/solid) heat transfer with isotropic/anisotropic conductivity in solids, including shell-element conduction
and thermal convection in moving solids
Coupling with radiation, dispersed phase, and species transport
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| 복사 열전달 모델 (Radiation Heat Transfer Modeling) |
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Discrete ordinates model for participating radiation including scattering, refraction, specular surfaces, non-gray effects and energy coupling for media with high optical thickness
Surface-to-surface radiation model for non-participating media
Discrete transfer radiation model (DTRM) with participating media
: Radiation mesh coarsening option
P-1 radiation model with participating/scattering media options
Rosseland model
Solar load model
Gas absorption coefficient dependence on water vapor, carbon dioxide, and particle concentration using WSGG
(weighted sum of gray gases) model
Radiation heat transfer to particles/droplets (P-1, discrete ordinates model)
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| 물질전달, 화학반응 및 연소해석
(Chemical Species Transports, Reaction, and Combustion Modeling)
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Formulation based on multiple species transport equations, including convection, diffusion, and reaction source
terms with multicomponent diffusion and thermal (Soret) diffusion modeling
Generalized finite rate chemistry for N reactions (forward/backward) with:
: Arrhenius model
: Combined Arrhenius/eddy-breakup model
: Eddy dissipation concept (EDC) model
: Laminar stiff chemistry solver
Composition PDF transport combustion model
In-situ adaptive tabulation (ISAT)
Conserved scalar PDF (one or two mixture fractions) based formulation for diffusion-controlled(non-premixed)
reactions using:
: Chemical equilibrium
: Laminar flamelet model
: Unsteady-laminar flamelet model
Turbulent premixed combustion model based on turbulent flame speed closure model
Partially premixed turbulent combustion model
Subgrid scale combustion models for large eddy simulations (LES)
Combustion submodels for coal, liquid, gas and mixed fuel types
Pollutant models
: NOx (including submodels for SNCR)
: Soot
: SOx
Autoignition and spark ignition models
Multi-step surface reactions with multiple sites and site species
: Surface site balance and desorption of gas species from surface
: Surface reactions in porous media
Built-in database for equilibrium data, thermodynamic properties, standard reaction mechanisms, and mixture
composition in gaseous, coal, and liquid fuel systems
User-defined access to reaction rates and source/sink terms
Import of reaction mechanisms in Chemkin format
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| 분산상 해석 모델 (Lagrangian Dispersed Phase Modeling) |
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Trajectory calculation for particles/droplets/bubbles in steady and unsteady flows
: Error-controlled adaption of the integration time-step
: Automated tracking scheme selection
Momentum, heat, and mass transfer coupling with fluid (continuous) phase
: Two-way turbulence coupling option
Particle force balance includes added mass and pressure gradient forces with options for thermophoretic, Saffman lift, and Brownian forces
Multiple choice of built-in drag laws for spherical and non-spherical particles and high Mach number effects
Liquid spray models
: Suite of primary atomization models
: Spray break-up models
: Droplet collision and coalescence models
: Distortion drag model
Wall film model
Multiple choice of injection types (single, group, cone, surface, user-specified file)
: Particle size distribution through linear distribution or Rosin-Rammler equation
Multiple choice of boundary conditions for particles, including spray-wall interaction model, reflection with constant or impact angle-dependent coefficient of restitution, trap and escape
Wall erosion model
Turbulent dispersion via discrete random-walk model
Optional particle-cloud model based on a Gaussian PDF of particle position
Heat transfer between fluid and dispersed phase, including convection and radiation effects
Mass transfer between liquid droplets or devolatilizing particles and the gas phase, including multicomponent particles and droplets
Evaporation and boiling of liquid droplets
Drying of wet particles
Coal combustion submodels for devolatilization, swelling, and char burnout
Heterogeneous surface reactions between solid particles and fluid phase (kinetic and/or diffusion limited rates)
Residence time reporting, detailed trajectory reporting, particle erosion/accretion monitoring, coal particle diagnostics, heat and mass transfer summaries, and particle dispersion display
Particle/droplet database with properties of standard solid particles and liquid droplets,
including common liquid fuels and coals
Parallelization for shared and distributed memory systems 분산 메모리 공유 병열처리
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| 다상유동 해석 모델 (Multiphase Flow Modeling) |
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Volume-of-fluid (VOF) multiphase model
: Gas-liquid or liquid-liquid system modeling for N immiscible fluids
: Interface tracking, including surface tension and wall adhesion effects
: High resolution interface capture (HRIC) scheme option
: Compressive Interface Capturing Scheme for Arbitrary Meshes (CICSAM) scheme option
: Heat transfer and mass transfer modeling
: Species transport and chemical reactions within or between phases
: Gas and liquid phase compressibility
: Variable time-stepping
: Includes custom wall contact angle via user-defined functions
Eulerian multiphase model
: Gas-liquid, gas-solid, liquid-solid, liquid-liquid, and gas-liquid-solid systems for N fluids
: Heat transfer and mass transfer modeling
: Species transport and chemical reactions within or between phases
: Gas and liquid phase compressibility
: Coupled momentum solver
: Includes virtual mass force, multiple choices for drag and lift laws, and custom laws via user-defined functions
: Multiple closure schemes for k-epsilon and RSM turbulence models
: Source terms for individual volume fraction equations; customizable via user-defined functions
Mixture multiphase model
: N-phases
: Heat transfer modeling
: Species transport and chemical reactions within or between phases
: Customizable slip velocity and particle diameter
: Source terms for individual volume fraction equations; customizable
via user-defined functions
Granular phase model with multiple (N) solid particle phases
: Available with Eulerian and mixture multiphase models
: Multiple choices for constitutive relationships and properties of granular phase,
including custom relations via user-defined functions
: Johnson and Jackson boundary condition
Cavitation model with ability to handle highly cavitating flows
Wet steam model
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| 동적 격자 변형 기법 (Dynamic Mesh Modeling) |
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Mesh motion and deformation automatically handled by solver
: Cell deformation using spring analogy
: Dynamic cell layering
: Local remeshing
: 2.5D remeshing
Automatic refinement/coarsening capability using sizing functions
Compatible with all other physical models including multiphase and reacting flows
In-cylinder mesh motion options and crevice/blowby model
Mesh motion preview
Six-degrees-of freedom (6DOF) solver
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| 공력 소음 해석 (Acoustics Modeling) |
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Ffowcs-Williams & Hawkings (FW-H) acoustics analogy
: Multiple receiver and source selection
: Support for rotating surfaces
Broadband noise source models for estimating acoustic sources from steady-state simulations
: Semi-empirical correlations for acoustic source power
: Source term estimation for Lilly and Linearized Euler equations based on
synthesized turbulent velocity field
Specialized post-processing, including discrete Fourier transform (FFT)
Export of acoustic source data to LMS-SYSNOISE
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| 전문화 모듈들 (Add-On Modules) |
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Continuous fiber module
Fuel cell module
: Proton exchange membrane fuel cell (PEMFC)
: Solid-oxide fuel cells (SOFC)
Magnetohydrodynamics (MHD) module
Population balance module |
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| 병열 처리 기법 (Parallel Processing) |
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Parallel processing on shared and distributed memory systems
Domain decomposition method, with grid partitioning tools (e.g. METIS)
Dynamic load balancing
Utility for launching serial and distributed parallel jobs from Windows desktops
Utilities for load management via LSF and SGE third party software
Utilization of vendor-optimized message passing libraries
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| 데이터 입 출력 (Export/Import) |
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Export of solution data to:
: ANSYS, ABAQUS, CGNS, I-DEAS, NASTRAN™, PATRAN™ and RadTherm
: AVS, Data Explorer™, EnSight, FAST, Fieldview and Tecplot
Data export in ASCII format (CSV and space delimited)
Data import from the CGNS format
Mesh import from the ANSYS, CGNS, FIDAP, I-DEAS, NASTRAN, and PATRAN formats
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| 하드웨어 지원 (Supported Hardware) |
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Serial and parallel versions of FLUENT 6.3 are supported on Windows, LINUX and UNIX platforms. Please contact
FLUENT Inc. for details. |
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| 적용 사례 (Applications) |
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| 항공 - Aerospace |
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| 자동차 - Automotive |
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| 조선- Shipbuilding |
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| 화공 - Chemical process |
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| 건물 공조- HVAC & R |
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| 전자 및 반도체 - Electronics & Semiconductor |
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