Prediction of Leakage Rate of Greenhouses Using Computational Fluid Dynamics
| Project/Area Number |
26850159
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Agricultural environmental engineering/Agricultural information engineering
|
|---|
| Research Institution | National Agriculture and Food Research Organization |
|---|
Principal Investigator |
Kuroyanagi Takeshi 国立研究開発法人農業・食品産業技術総合研究機構, 西日本農業研究センター傾斜地園芸研究領域, 主任研究員 (60414778)
|
|---|
| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Project Status |
Completed (Fiscal Year 2016)
|
| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
|
|---|
| Keywords | シミュレーション / 施設園芸 / 隙間換気 / 温室 / 数値流体力学 / 内圧係数 / CFD |
|---|
| Outline of Final Research Achievements |
Air leakage of greenhouses accounts for the heating load and the carbon dioxide supply. Quantitative evaluation of the greenhouse air leakage is essential to estimate the variable costs for greenhouses of adequate energy efficiency. In this study, the greenhouse leakage rate was estimated through a combination of CFD simulation of the external pressure coefficients of the greenhouse cladding and modelling of airflow through leakage paths on the greenhouse walls. The simulation results of the leakage rate were validated by the experimental results obtained from two greenhouses with the same structure but different orientation. The correlation coefficients between the simulated and measured values ranged from 0.98 to 0.99, and the RMSE of the simulated leakage rate ranged from 0.020 to 0.052. This methodology will be helpful for designing light-weight greenhouses in windy regions.
|
Report
(5 results)
Research Products
(8 results)
