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Articles

OPTIMIZATION OF AIR FLOW CIRCULATION WITH BRANCHING PERFORATING DUCT AND FAN SYSTEM

Article number

1008_32

Pages

241 – 247

Language

English

Abstract

Airflow mixing has important role on the environmental control in greenhouse for averaging of temperature, humidity and CO₂ concentration.
Air mixing performance of branching ducting system was evaluated with computational fluid dynamics (CFD). The branching ducting system for the air heating with the heater, which installing fan, is generally used in small scale greenhouse in Japan.
This system has merits on the less distribution and less number of installing fans but has to mind on the pressure loss in duct, which makes air flow distribution in ducts.
Numerical model of greenhouse, which has size of 10×5×2 m, installing ducting system was evaluated with CFD simulation model.
Simulation conditions were changed by size of holes on duct and fan number and locations.
The size of holes limit air flow and the fan locations were influenced to the air flow direction in the greenhouse.
System with double fan at opposite corners and large holes for discharge air shows the best performance on mass flow rate and uniformity of flow pattern.

Publication

Ist International Symposium on CFD Applications in Agriculture

Authors

R. Ibuki, M. Behnia

Keywords

airflow, environmental control, greenhouse, mixing, perforating duct

Full text

https://doi.org/10.17660/ActaHortic.2013.1008.32

Online Articles (40)

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2. PREDICTION OF LIVESTOCK ODOUR DISPERSION OVER COMPLEX TERRAIN USING CFD TECHNOLOGY: REVIEW AND SIMULATION STUDY

S.-W. Hong | I.-B. Lee | I.-H. Seo | J.P. Bitog | K.-S. Kwon

3. INVESTIGATION OF WINDBREAK SYSTEMS TO CONTROL DUST GENERATION AND DISPERSION IN A RECLAIMED LAND: A NUMERICAL APPROACH

J.P. Bitog | I.-B. Lee

4. ATOMIZATION MODELLING: A EULERIAN APPROACH

A. Vallet | A. Belhadef

5. ONGOING RESEARCH ON PESTICIDES AIR DISPERSION

B. Bonicelli | E. Cotteux | B. Ruelle | V. De Rudnicki | C. Sinfort

6. CFD APPLICATION FOR ESTIMATION OF AIRBORNE SPREAD OF HPAI (HIGHLY PATHOGENIC AVIAN INFLUENZA)

I.-H. Seo | I.-B. Lee

7. AIRFLOW AROUND ARTIFICIAL WINDBREAKS WITH ELASTIC SUPPORT

A. Giannoulis | A. Mistriotis | N. Papardaki | D. Briassoulis

8. A CASE STUDY OF AIRFLOW PATTERNS AROUND AN ARCHED TYPE AGRICULTURAL BUILDING: INVESTIGATING MESH CONVERGENCE OF DIFFERENT TURBULENCE MODELS

C. Zong | W. Wu | G.-Q. Zhang | X. Shen | G. Ntinas

9. MIXING PROCESS IN A WATER STORAGE TANK BY CFD SIMULATIONS

I.J. Moncho-Esteve | G. Palau-Salvador | P.A. López-Jiménez | W. Brevis | M.O. Vaas

10. HYDRODYNAMIC BEHAVIOUR OF THE UNDERDRAINS IN MICROIRRIGATION SAND MEDIA FILTERS USING CFD SOFTWARE

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11. CFD SIMULATION OF WATER EVAPORATION IN CLASS-A PAN WITH A TRANSIENT ANALYSIS

P. Vidal-López | B. Martin-Gorriz | V. Martínez-Alvarez | B. Gallego-Elvira

12. FLOW AND SCALAR EXCHANGE FOR HORTICULTURAL PRODUCTS USING CFD: PERFORMANCE OF TURBULENCE AND BOUNDARY-LAYER MODELLING APPROACHES

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13. CFD MODELLING TO STUDY THE EFFECTS OF TABLE GRAPE PACKAGING AND STACKING ON FRUIT COOLING AND MOISTURE LOSS

M.A. Delele | M.E.K. Ngcobo | U.L. Opara | P.B. Pathare

14. NUMERICAL SIMULATION OF AIRFLOW DISTRIBUTION IN MIXED FLOW DRYER

H. Scaar | F. Weigler | J. Mellmann

15. COMPUTATIONAL FLUID DYNAMICS (CFD) ANALYSIS OF AIR FLOW UNIFORMITY IN A FIXED-BED DRYER FOR MEDICINAL PLANTS

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D.R. Carvalho | I.S. Santos | G. Vargas | M.A. Martins | A.P.S. Ferreira

17. CFD ANALYSES OF TEMPERATURE DISTRIBUTION IN A HYBRID VENTILATED PIG UNIT

B. Bjerg | P. Hansen | E.F. Pedersen

18. CFD ANALYSES OF THE INFLUENCE OF VENTILATION SYSTEM ON THE EFFECTIVENESS OF A PARTIAL PIT EXHAUST

B. Bjerg | G.-Q. Zhang

19. 3-DIMENSIONAL THERMAL ANALYSIS OF A SCREENHOUSE WITH PLANE AND MULTISPAN ROOF BY USING COMPUTATIONAL FLUID DYNAMICS (CFD)

J. Flores-Velazquez | F. Villarreal Guerrero | I.L. Lopez | J.I. Montero | D. Piscia

20. CFD MODELING OF AIR COOLING OF MULTIPLE BEEF CARCASSES USING 3D GEOMETRICAL MODELS

K. Kuffi | T. Defraeye | B. Nicolai | A. Geeraerd | P. Verboven | E. Koninckx | S. Lescouhier | S. De Smet

21. CFD BASED ANALYSIS OF THE 3D SPATIAL AND TEMPORAL DISTRIBUTION OF 1-METHYLCYCLOPROPENE IN APPLE FRUIT STORAGE

A. Ambaw | P. Verboven | M.A. Delele | T. Defraeye | E. Tijskens | A. Schenk | B. Nicolai

22. COMPUTATIONAL MODELLING AND SCALE MODEL VALIDATION OF AIRFLOW PATTERNS IN NATURALLY VENTILATED BARNS

M. De Paepe | P. Demeryer | J. Pieters | W. Cornelis | D. Gabriels | B. Merci

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E. Tamimi | M. Kacira

24. CLIMATE DISTRIBUTION IN A FAN AND PAD EVAPORATIVE COOLED GREENHOUSE: A CFD APPROACH

T. Bartzanas | D. Fidaros | C. Baxevanou | C. Kittas

25. ASSESSMENT OF VENTILATION PERFORMANCE IN AGRICULTURAL FACILITIES USING “AGE OF AIR” CONCEPT AND CFD TECHNOLOGY

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26. NIGHT TIME CFD SIMULATIONS OF THE DISTRIBUTED CLIMATE INSIDE A GLASSHOUSE

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T. Kuroyanagi

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A.A. Sapounas | H.J.C. van Dooren | M.C.J. Smits

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K. Mesmoudi | B Zitouni | T. Outtas | P.E. Bournet

32. OPTIMIZATION OF AIR FLOW CIRCULATION WITH BRANCHING PERFORATING DUCT AND FAN SYSTEM

R. Ibuki | M. Behnia

33. COMPUTATIONAL FLUID DYNAMICS MODELLING OF ORCHARD SPRAYER PERFORMANCE: MACHINE TYPE AND OPERATIONAL PARAMETERS CHARACTERIZATION

A.T. Duga | A.M. Endalew | B. Nicolai | P. Verboven | D. Dekeyser | D. Nuyttens | N. Hendrickx

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35. APPLICATION OF SMALL-SCALE WIND POWER SYSTEM IN LIVESTOCK BUILDINGS

S.-W. Hong | I.-B. Lee | I.-H. Seo | J.P. Bitog | K.-S. Kwon

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C.Y. Choi | M. Mondaca

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I.S. Dos Santos | E.G. Pereira | M.A. Martins | A.C.O. Carneiro | M.P. Coelho

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