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1、FLUENT6.1 ? 1 ? ? ? ? ? ?FLUENT ? ? FLUENT ? 8.1 ? ? ?1? ? ?2? ?3?1? ?4? ? ? 8.1.1 ? ? 8-1 ? ? Define - Boundary Conditions. 1. ? ? velocity-inlet-5 ? velocity-inlet? pressure-inlet? ? ?1? Zone? velocity-inlet-5? ?2? Type? OK ? ? 1 ? FLUENT6.1 ? 2 ? ? ? 8-1 Boundary Conditions? 2. ? ? ? ? 8-1? ? 8-1
2、 ? ? ? ? ? ? ? ? FLUENT6.1 ? 3 3. ? ? set? ? 4. ? ? ? ? 8-2 Copy BCs? ? ?1? Copy? 8-2 ? ? ?2? From Zone? ?3? To Zones? ?4? Copy? ?5? Close? ? ? 8.1.2 ? ? ? ?1? Display - Grid ? FLUENT6.1 ? 4 ?2? ? 8.1.3 ? 1. ? ? ?1? Set? ?2? Zone Name? ?3? OK ? 2. ? ? ? ?UDF? 8.26 ?UDF? ? 3. ? ?transient? FLUENT ? ?
3、 ?FLUENT ? ? 8.26.5 ? ? ? profile-name n_field n_data periodic? field-name-1 field-name-2 field-name-3 field-name-n_field v-1-1 v-2-1 . . . . v-n_field-1 v-1-2 v-2-2 . . . . v-n_field-2 . . . v-1-n_data v-2-n_data . . . . v-n_field-n_data ? profile-name ?n_field ?n_data ? ?periodic?1 ?0 ?field-name
4、? ? ? sampletabprofile 2 3 1 FLUENT6.1 ? 5 time u 1 10 2 20 3 30 ? ? ? ? file /fileread-transient-table transient file name ? ? 8.2 ? 8.2.1 ? FLUENT ? ?1? ?2? ?3? ? ? ?4? ?outlet?outflow? ? ?5? ? ? ?6? ? ? ?7? ? ?8? ? ? ? FLUENT6.1 ? 6 ? ?9? ?10? ? 8.2.2 ? ? FLUENT ? ? ? ? ?UDF ? ? ? ? ? ? ? ? Turbu
5、lence Specification Method ? ? ? ? ?1?Turbulence Intensity? ?I? avg u wvu I 222 ? ? ?8?1? ? u? v?w? avg u? ? 1? 10? ? ? ? 0.05%? ? ? ?8?2? ? FLUENT6.1 ? 7 ?8 1 Re16 . 0 ? ? H D avg u u I ?8?2? ? H D? Hydraulic Diameter?8?2? ? ?2? ?l? ?l? ?l?L? Ll07 . 0 ? ?8?3? ? 0.07 ?L? ?L? ? ? ? ? ? ?8?3? ? ? FLUE
6、NT ?L?l? 1? Intensity and Hydraulic Diameter? ? Hydraulic Diameter? H D? 2? Intensity and Hydraulic Diameter? ? Hydrauli Diameter? ?L? 3? Intensity and Length Scale ? 99 ? 99 4 . 0?l?l? ? Turbulence Length Scale?l? ?2? ?/ t ? t Re? ? 2 Re k t ? ?8?4? t Re? FLUENT6.1 ? 8 100 ? 1000 ?/ t ? ?/ t ? 1 ?
7、10 ? ? ? Turbulent viscosity Ratio ? ? Intensity and Viscosity Ratio? Spalart-Allmaras ? ?k?k? RSM ? ?3? ?I?L?/ t ? ? FLUENT ? 1? ? Spalart-Allmaras ?I?l? ? lIuavg 2 3 ? ?8?5? ? FLUENT ? Spalart-Allmaras ? Intensity and Hydraulic Diameter? ?l?8?3? 2? ?k?I? ?2 2 3 Iuk avg ? ?8?6? ? avg u? ? FLUENT ?k
8、? Intensity and Hydraulic Diameter? ?Intensity and Length Scale? ? Intensity and Viscosity Ratio? ?8?6? ? 3? ?l? l k C 2/3 4/3 ? ? ?8?7? ? ? C? 0.09? ?k? Intensity and Hydraulic k?Intensity and Hydraulic? FLUENT6.1 ? 9 Diameter? Intensity and Length Scale? ? 4? ?/ t ?k? 1 2 ? ? ? ? ? ? ? ? ? ? ? ? ?
9、 ? ? t k C ?8?8? ? ? C? 0.09? ?k? Intensity and Viscosity Ratio? 5? ? ? ? ? ! L kU ? ?8?9? ?k?k? ?k? 10? ? U? ? L? ?8?9? ?k? ? “ “ x k U ?8?10? ?8?8?/ t ? FLUENT ? ?8?6?k? Turbulence Specification Method? ? K and Epsilon?k?k? ? 6? ?l? lC k 25. 0 5 . 0 ? ? ?8?11? ? ? C?l? Intensity and Hydraulic Diam
10、eter? Intensity and Length Scale? Diameter?Intensity and Length Scale? ? FLUENT6.1 ? 10 ?FLUENT ? 7? ?/ t ?k? 1? ? ? ? ? ? ? ? ? ? ? ? ? ? t k ?8?12? ? Intensity and Viscosity Ratio?FLUENT ? 8? ? RSM? Reynolds-Stess Specification Method ? Reynolds-Stress Components? ?k? 0? jiu u ?8?13? ? kuu 3 2 ? ?
11、 ? ?8?14? ? Reynolds-Stress Specification Method ? ? K or Turbulence Intensity?k?FLUENT ? ?4?LES? ? LES ? ? LES ? ? 8.3 ? ? ? ? 8.3.1 ? ? ?1? ?2? FLUENT6.1 ? 11 ?3? ?4? ?5? ?6? P-1 ?DTRM?DO ? ? ?7? ?8? ?9? ?10? ? ?11? ? ? Pressure Inlet? Boundary Conditions? ? set? ? 1. ? FLUENT ?gx 0 ? gxpp ss0 ? ?
12、8?15? ? g x p x p ss 0 ? “ “ ? “ “ ?8?16? ?g)( 0 ? ? ? 2. ? ? Pressure Inlet? Gauge Total Pressure? ? Total Temperature? ? ? ? 2 0 2 1 vpp s ? ? ?8?17? ? FLUENT6.1 ? 12 1 2 0 2 1 1 ? ? ? ? ? ? ? ? # # # Mpp s ?8?18? ?8?17?8?18? 0 p? s p?M?# ? ? ?8?17?v ? ? ? 8-3 Pressure Inlet? ? ?8?17?8?18? ? Solve
13、r? Absolute? ? ? ? FLUENT6.1 ? 13 3. ? ? ? ? ? x?y?z ? ? ? ? Solver? Absolute? ? ? ?1? Direction Specification Method? ? Direction Vector? Normal to Boundary? ? ?2? Normal to Boundary? ? ? Tangential-Component of Flow Direction? ? Normal to Boundary? ? ? ?3? Direction Vector? ? ? Coordinate System?
14、? Cartesian?X,Y,Z? ? ?Cylindrical?Radial,Tangential,Axial? ? ? Local Cylindrical?Radial,Tangential,Axial? ? ? ? ? 1? Fluid? ? 2? ? ? Fluid? ? Solid? ? ? 3? ? Pressure Inlet? ? ?4?1? 1?3? ? X?Y ? Z ? 2?3? ? FLUENT6.1 ? 14 ? 8-4 ? 3? ? X?Y ? Z ? X?Y ? Z ? 4. ? ? FLUENT ? Supersonic/Initial Gauge Press
15、ure?/? ? ? ? ?FLUENT ? Supersonic/Initial Gauge Pressure?/? ? ?8?18?8?17? ? ? ? ? ? 8.3.2 ? ? ? FLUENT6.1 ? 15 ? 8-2 ? ? ?0 ?/?0 ?300 ? X ?1 ? Y ?0 ? Z ?0 ?1 ?1 8.3.3 ? FLUENT ? ?8?17? ?8?18? 1. ? ?FLUENT ? 0 p? ? 0 p? s p?8?17? ? ? ? ? ? 2. ? ? ? ? 0 p? s p? ? 1 2 0 2 1 1 ? ? ? ? ? ? ? ? ? ?# # # M
16、 pp pp ops op ?8-19? FLUENT6.1 ? 16 ? s RT v c v M # ? ?8-20? c?#?8-19? op p? ? ? ? 0 p? s p?8-19?8-20? ? ? s ops RT pp ? ? ? ?R? i Y? ? s T? ? 20 2 1 1M T T s ? ? # 8.4 ? ? ? ? ? ? ? ? ? 8.4.1 ? ? FLUENT6.1 ? 17 ?1? ?2? ?3? ?4? ?5? ?6? P-1 ?DTRM?DO ? ?7? ?8? ?9? ?10? ?11? ? Velocity Inlet? 8-5? Bou
17、ndary Condition ? ? ? set ? ? Velocity Inlet ? 1. ? ? FLUENT ? ? ? ? ? ? FLUENT ? ? ? ? ?FLUENT ? ? ? ?axsiymetric swirl? ? ?1? Velocity Specification Method? ? Magnitude and Direction? ?Components? ? Magnitude,Normal to Boundary? ? ?2? Reference Frame? ? Relative to Adjacent Cell Zone? Absolute ? ?3? ? Coordinate System ? ? ? Cartesian (X, Y, Z) FLUENT6.1 ? 18 ? ? Cylindrical (Radial, Tangential, Axial) ? ? Local Cylindrical (Radial, Tangential, Axial)? ?4? ? ? 8-5 Velocity Inlet? ? ? ?