Numerical simulation of an array of fences in Saemangeum reclaimed land |
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| Authors: | JP Bitog I-B Lee M-H Shin S-W Hong H-S Hwang I-H Seo J-I Yoo K-S Kwon Y-H Kim J-W Han |
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| Institution: | 1. Department of Rural Systems Engineering and Research Institute for Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, 599, Gwanakno, Gwanakgu, 151-921 Seoul, Republic of Korea;2. Department of Agricultural Engineering, College of Engineering, Nueva Vizcaya State University, 3700 Bayombong, Nueva Vizcaya, Philippines;3. Saemangeum Project Office, Korea Rural Community & Agriculture Corporation, 605-1 Shinpoong-Dong Gimje, ShiJeon-buk, Republic of Korea;4. Department of Bio-Mechatronics Engineering, Sungkyunkwan University, 300, Cheoncheon-dong, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Republic of Korea;1. Politecnico di Torino, Department of Architecture and Design, Viale Mattioli 39, I-10125, Torino, Italy;2. Optiflow Company, 160, Chemin de la Madrague-Ville, F-13015, Marseille, France;3. Politecnico di Torino, Department of Mathematical Sciences “Giuseppe Luigi Lagrange”, Corso Duca degli Abruzzi, 24, I-10129, Torino, Italy;4. Windblown Sand Modeling and Mitigation Joint Research Group, Italy;1. Department of Large Animal Sciences, University of Copenhagen, Groennegaardsvej 2, DK1870 Frederiksberg C, Denmark;2. Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Viale G. Fanin 50, 40127 Bologna, Italy;3. Department of Science and Technology for Agriculture, Forestry, Nature and Energy (DAFNE), Tuscia University, Via San Camillo de Lellis, s.n.c. – 01100 Viterbo, Italy;4. Department of Engineering, Aarhus University, Blichers Allé, DK8830 Tjele, Denmark;5. National Centre for Engineering in Agriculture, University of Southern, Queensland, West Street, Toowoomba QLD 4350, Australia;6. Institute of Technology and Management of Agricultural Ecosystems, Center for Reseach and Technology-Thessaly, 1st Industrial Area of Volos, 38500 Volos, Greece;7. Department of Agricultural Engineering, University of Catania, Via S. Sofia, 100, 95133 Catania, Italy;8. Department of Rural Systems Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea;9. Engineering Department, Harper Adams University College, Newport, Shropshire, TF10 8NB, United Kingdom;1. Division of Atmospheric Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA;2. Division of Atmospheric Sciences, Desert Research Institute, 755 E. Flamingo Rd., Las Vegas, NV 89119, USA;3. Oceano Dunes State Vehicular Recreation Area, California State Parks, 340 James Way Suite 270, Pismo Beach, CA 93449, USA;4. Coastal San Luis Resource Conservation District, 1203 Main St. Suite B., Morro Bay, CA 93442, USA |
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| Abstract: | This paper discusses about the quantitative effect of windbreak fences on wind velocity in the reclaimed land at Saemangeum in South Korea. Windbreak fences were constructed in the reclaimed land to reduce the wind velocity to prevent the generation and diffusion of dust. However, up to this time, no in-depth studies were conducted to quantitatively measure the effect of the windbreak fences on wind velocity thus an optimum windbreak structure is not yet determined. Using CFD simulations, the effects of fence porosity, fence height, and the distance between the adjacent fences were investigated. A wind tunnel experiment was initially conducted and data gathered were used to develop the CFD models. From the experiments and CFD simulations, the overall percentage difference of the measured velocities was 7.20% which is generally acceptable to establishing the reliability of the CFD models. The reduction effect on wind velocity was measured in between the adjacent fences up to a height of 0.6 m from the ground surface. In terms of porosity ( = 0, 0.2, 0.4, 0.6), 0.2 was found to be the optimum value. Conversely, the effect of fence height (0.6, 0.8 and 1.0 m) showed no significant difference; therefore, 0.6 m height is recommended. In addition, the reduction effect of distance between the adjacent fences (2, 4 and 6 m) on wind velocity having a 0.2 porosity has decreased to about 75% regardless of the distance. In the case of the reclaimed land in Saemangeum, a decrease of 75% can prevent the generation and diffusion of dusts. However, the source of dusts is very large. Therefore, constructing an array of windbreak with 6 m distance between them is deemed necessary. |
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| Keywords: | Computational fluid dynamics (CFD) Porosity Reclaimed land Wind tunnel Windbreak fence |
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