## CFD锯齿形肋片温度场模拟+文献综述

Title    Offset Strip Fin Temperature Field Simulation
Abstract
Plate-fin heat exchanger，as the high-performance recuperative heat exchanger，have heat transfer performance and tightly packed，is used in wide variety of applications such as industrial production and aerospace sector．Offset strip fin is the common types of fin in plate-fin heat exchanger．The research and optimization of its structure is a significant improvement of heat exchanger.
The study object is offset strip fin．I establish the 3D coupled heat transfer numerical simulation model and use the CFD software to finish the simulation calculation．Then I get the temperature field、pressure field and velocity field of the offset strip fin．I also add the same size plain fin as the control and analyze the heat transfer performance between them based on the database．To understand the structure of the offset strip fin parameters on its performance，I change the transverse spacing and fin thickness of the model．I analyze the influence on its heat transfer and flow performance and get the conclusion.

Keywords  Plate-fin heat exchanger  Offset strip fin  Numerical simulation CFD

1    绪论    1
1.1板翅式换热器    1
1.2锯齿形肋片    1
1.3本文研究任务和主要内容    4
2    数值模拟理论基础    5
2.1流体的基本性质    5
2.2流体流动状态的判断    6
2.3流体运动与换热的基本控制方程    7
2.4数值模拟计算    9
3    锯齿形肋片的数值模拟    10
3.1锯齿形肋片结构参数    10
3.2计算模型    10
3.3网格划分    12
3.4边界条件设定    13
3.5求解条件设定    14
3.6计算结果后处理    16
4    数值计算结果与分析    17
4.1锯齿形肋片流场分布特点    17
4.2锯齿形肋片与平直形肋片流场分布对比    19
4.3锯齿形肋片错齿间距的影响    22
4.4锯齿形肋片厚度的影响    23

1    绪论
1.1板翅式换热器

------分隔线----------------------------