A Numerical Simulation of Oscillating Flow in a Two Dimensional Channel Using Lattice2Bolt-mann Method

doi:10.7652/xjtuxb200601004

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A Numerical Simulation of Oscillating Flow in a Two Dimensional Channel Using Lattice2Bolt-mann Method

更新时间：2025-07-09

- A Numerical Simulation of Oscillating Flow in a Two Dimensional Channel Using Lattice2Bolt-mann Method
- Vol. 40, Issue 1, Pages: 14-0017(2006)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb200601004
  CLC：
- Online First：10 January 2006，
  
  Published：2006
- 稿件说明：
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A Numerical Simulation of Oscillating Flow in a Two Dimensional Channel Using Lattice2Bolt-mann Method[J]. 2006, 40(1): 14-0017.
DOI：

A Numerical Simulation of Oscillating Flow in a Two Dimensional Channel Using Lattice2Bolt-mann Method[J]. 2006, 40(1): 14-0017. DOI： 10.7652/xjtuxb200601004.

摘要

采用格子OBoltzmann 方法(LBM) 对二维管道内不可压缩交变流动———Womer sley 流的流 动与换热进行了数值模拟研究. 结果表明:管道内压力梯度呈周期性变化

在周期较小时

管道的绝 大部分区域速度分布相当平坦

在靠近壁面附近出现了速度的峰值

且靠近壁面处速度变化剧烈; 在周期较大时

速度分布近似于抛物线

管道中心速度总大于壁面附近速度

且不同周期下的模拟 结果与解析解都吻合得很好. 另外

当速度交变时

温度表现为波动变化. 速度与温度的相位差、温 度的分布特性、温度的波动特性等都与压力梯度交变周期及幅值有关. 研究结果表明

LBM 可以用 于交变流动的模拟. 鉴于LBM 的众多优点

该方法有望成为求解复杂流动与换热的一种有效的数 值模拟手段.

Abstract

A numerical study was performed for incompressible oscillating flow in a two2dimen2 sional channel

the so2called Womer sley flow

using lat tice2Bolt-mann met hod (LBM) . The pres2 sure gradient varies periodically. The major result s are as follows. When t he cycle is short

annu2 lar effect s exist in t he velocity profiles. The amplit udes of the velocity along t he centerline are less t han t hose near t he wall

and the gradient s of t he velocity near t he wall are larger t han t ho se in t he center region. However

when t he cycle is long t he velocity profiles are of parabolic type

and the amplit udes of velocity along t he centerline are larger t han t hose near t he wall . The result s of the velocity fields agree well wit h the analytical solution. The p hase difference between t he ve2 locity and temperat ure

t he profiles of t he temperat ure

and t he fluct uating characteristics of t he temperat ure mainly depend o

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