上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY Lecture 20 Introduction to FLUENT 通 2 SHANG 1日日日 ERSITY
Lecture 20 Introduction to FLUENT
上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY CFD Overview Computational fluid dynamics,usually abbreviated as CFD,is a branch of fluid mechanics that uses numerical methods and algorithms to solve and analyze problems that involve fluid flows. CFD software is specifically used for flow analysis and flow field prediction.It can analyze and display phenomena in the flow field.Besides it can predict performance and achieve optimal design results by changing various parameters in a relatively short period of time
CFD Overview Computational fluid dynamics, usually abbreviated as CFD, is a branch of fluid mechanics that uses numerical methods and algorithms to solve and analyze problems that involve fluid flows. CFD software is specifically used for flow analysis and flow field prediction. It can analyze and display phenomena in the flow field. Besides it can predict performance and achieve optimal design results by changing various parameters in a relatively short period of time
上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY FLUENT Overview FLUENT is a kind of CFD software. FLUENT adopts flexible unstructured adaptive grid and grid-based solutions and sophisticated physical models. FLUENT is widely used to simulate fluid flow,heat and mass transfer,and a host of related phenomena involving turbulent,reacting,and multiphase flow
FLUENT Overview FLUENT is a kind of CFD software. FLUENT adopts flexible unstructured adaptive grid and grid-based solutions and sophisticated physical models. FLUENT is widely used to simulate fluid flow, heat and mass transfer, and a host of related phenomena involving turbulent, reacting, and multiphase flow
上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY FLUENT Overview Components of FLUENT software: (1)FLUENT solver-used for flow simulation and calculation (2)GAMBIT-used for create geometry and grid (3)UDF-used for user-defined changes of variables in flow simulation (4)prePDF-used for simulating PDF combustion process (5)TGrid-additional processors used for generating mesh from the existing boundary mesh body (6)Filters(Translators)-used for converting grid generated by other programs
FLUENT Overview Components of FLUENT software ： (1) FLUENT solver——used for flow simulation and calculation (2) GAMBIT——used for create geometry and grid (3) UDF——used for user-defined changes of variables in flow simulation (4) prePDF——used for simulating PDF combustion process (5) TGrid——additional processors used for generating mesh from the existing boundary mesh body (6) Filters(Translators)——used for converting grid generated by other programs
上游充通大学 SHANGHAI JIAO TONG UNIVERSITY FLUENT Overview Grid types of FLUENT In two-dimensional problem FLUENT can use a triangle,quadrilateral or mixed mesh. In three-dimensional problem,FLUENT can use a tetrahedral,hexahedral,pyramid-shaped,wedge- shaped unit,or mix unit
FLUENT Overview Grid types of FLUENT • In two-dimensional problem , FLUENT can use a triangle, quadrilateral or mixed mesh. • In three-dimensional problem, FLUENT can use a tetrahedral, hexahedral, pyramid-shaped , wedgeshaped unit, or mix unit
上游充通大￥ SHANGHAI JIAO TONG UNIVERSITY FLUENT Overview 2D grid: triangle quadrilateral hexahedron tetrahedron 3D grid: prism or wedge pyramid Basic control volume in FLUENT
FLUENT Overview Basic control volume in FLUENT 2D grid: 3D grid:
上游充通大学 SHANGHAI JIAO TONG UNIVERSITY FLUENT Overview User-Defined Functions(UDFs) UDF is a user self-compiled program that can be dynamically connected to the Fluent solver in order to extent the functions of FLUENT program or improve functional. UDF can make FLUENT simulate actual problems encountered in production and construction better and improve solver performance
FLUENT Overview User －Defined Functions(UDFs) • UDF is a user self-compiled program that can be dynamically connected to the Fluent solver in order to extent the functions of FLUENT program or improve functional. • UDF can make FLUENT simulate actual problems encountered in production and construction better and improve solver performance
上游充通大学 SHANGHAI JIAO TONG UNIVERSITY FLUENT Overview Steps of solving problem in FLUENT 1,Create geometry and generate mesh 2,Select solver 3,Import and check grid 4,Select solving equations 5,Set material properties 6,Set boundary conditions 7,Set calculation and control parameters 8,Initiation 9,Solve 10,Restore results and carry on post-processing
FLUENT Overview Steps of solving problem in FLUENT 1，Create geometry and generate mesh 2，Select solver 3，Import and check grid 4，Select solving equations 5，Set material properties 6，Set boundary conditions 7，Set calculation and control parameters 8，Initiation 9，Solve 10，Restore results and carry on post-processing
上游充通大 SHANGHAI JIAO TONG UNIVERSITY FLUENT Installation 国 When installing FLUENT,you should install pre-processor GAMBIT and EXCEED which can be used for simulating UNIX environment. 国 GAMBIT is used for creating geometry and generating mesh. EXCEED is used for providing GAMBIT with an UNIX simulation environment when GAMBIT working in WINDOWS because GAMBIT needs to work under UNIX
FLUENT Installation When installing FLUENT, you should install pre-processor GAMBIT and EXCEED which can be used for simulating UNIX environment. GAMBIT is used for creating geometry and generating mesh. EXCEED is used for providing GAMBIT with an UNIX simulation environment when GAMBIT working in WINDOWS because GAMBIT needs to work under UNIX
上游充通大学 SHANGHAI JIAO TONG UNIVERSITY FLUENT Installation Taking the example of FLUENT6.3.26 GAMBIT2.4.6 Hummingbird Exceed,following are some brief crucial installation steps: (1)Firstly,please install Hummingbird Exceed (2)Secondly,please install FLUENT and GAMBIT Humming Hummningh. Gambit Huent Neighbor.Connectivi.. 246 6326
FLUENT Installation Taking the example of FLUENT6.3.26 、GAMBIT2.4.6 、Hummingbird Exceed, following are some brief crucial installation steps： （ 1 ）Firstly, please install Hummingbird Exceed （ 2 ）Secondly, please install FLUENT and GAMBIT