基于CFD的玻璃温室环境数值模拟及优化分析.pdfVIP

第

46

卷第

5

期应

用

科

技Vol.46

No.5

2019

年

9

月Applied

Science

and

TechnologySep.

2019

DOI:

10.11991/yykj.201901005

网络出版地址：/kcms/detail/23.1191.U1424.006.html

基于CFD的玻璃温室环境数值模拟及优化分析

贾鹤鸣，韩骏骋，张森，孙康健，李瑶

东北林业大学

机电工程学院，黑龙江

哈尔滨

150040

摘

要：为进一步研究和优化玻璃温室内部气流场及温度场的分布，基于计算流体力学(computational

fluid

dynamics,

CFD)对东北地区玻璃温室内部气流场进行三维建模数值分析，分析得出内部速度场、温度场的分布模式，并针对温室内部

气流分布情况提出3种结构优化策略。模拟结果表明：监测点处的气流速度及温度的平均相对误差分别为5.54%、4%，数

值模拟结果与试验测试结果吻合度较高。3种优化方案结果均优于初始方案，其中通过分析得出方案三将暖风扇置于离地

0.7

m处的为最佳方案，植物区域处于最适风速的部分增加了50%，气流均匀性最好且平均温度为23.49

℃，有效改善了温

室内环境并使其更加适宜植物的培养。

关键词：计算流体力学；玻璃温室；气流运动；温度场；速度场；多孔介质；数值模拟；均匀性；结构优化

中图分类号：TP273

文献标志码：A

文章编号：1009−671X(2019)05−0028−06

Numericalanalysissimulationandoptimizationoftheenvironment

inglassgreenhousebasedonCFD

JIA

Heming,

HAN

Juncheng,

ZHANG

Sen,

SUN

Kangjian,

LI

Yao

College

of

Mechanical

and

Electrical

Engineering,

Northeast

Forestry

University,

Harbin

150040,

China

Abstract:

In

order

to

further

study

and

optimize

the

distribution

of

air

flow

and

temperature

field

in

glass

greenhouse,

a

numerical

analysis

of

the

three-dimensional

modeling

of

air

flow

field

in

glass

greenhouse

in

the

Northeast

China

based

on

computational

fluid

dynamics

(CFD)

is

carried

out

in

this

paper.

Then

the

distribution

patterns

of

internal

velocity

field

and

temperature

field

are

derived,

and

three

structural

optimization

strategies

are

put

forward

according

to

the

distribution

of

air

flow

in

glass

greenhouse.

The

simulation

results

show

that

the

average

relative

errors

of

gas

velocity

and

temperature

at

the

monitoring

points

are

5.54%

and

4%,

r