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2005-fluent内部培训-湍流模型

FLUENT

湍流模型

流体力学仿真

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流体力学仿真FLUENT官方培训资料，关于湍流模型的模拟和设计参数注意事项等。

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Presenter Name

Presenter Title

Presentation Title

June XX, 2005

Stefano Orsino

Case Studies on Using the

Turbulence Models

June 9, 2005

fluent内部培训-湍

流模型

Motivation

 How do I choose which turbulence model and near

wall modeling approach to use for a given

application?

 Understanding of how turbulence modeling

issues affect turbulence model selection and

performance

 Observation and comparison of behavior of

turbulence models for flows in similar

applications

 Results will be presented from a variety of

flows to help with this point

Course Objectives

 Understand factors affecting turbulence model

selection

 Understand why turbulence modeling is necessary

 Understand reasons for difference in the

performance of various turbulence models

 Review turbulence models in Fluent 6

 Compare performance of turbulence models

 Which models are likely to be accurate in a

particular flow

 How factors besides the turbulence model may

affect accuracy

Outline

 Turbulence Modeling Overview

 Factors Affecting Turbulence Model Selection

 Characteristics of Turbulent Flows

 Modeling Approaches

 RANS Models and Theory

 LES/DES

 Near Wall Modeling

 Turbulence Models in FLUENT

 Case Studies

 Flows of low to moderate complexity

 Flows of increasing complexity

Factors Affecting Turbulence

Model Selection

 Many factors must be considered. To make the best choice

requires an understanding of the available options

 This course focuses primarily on flow physics and

accuracy

Turbulence Model

Near-Wall Treatment

Flow

Physics

Accuracy

Required

Computational

Resources

Turnaround

Time

Constraints

Computational

Grid

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