上海交通大学：《生物传热学教与学 Bioheat Transfer》课程教学资源（电子讲义）Lecture 20 Introduction to FLUENT

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 , wedge￾shaped 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