Sprinkler Droplet Effects on Infiltration. I: Impact Simulation
The water infiltration rate during sprinkle irrigation is known to decrease due to the impact effects of water droplets on soil-surface structure. In this paper, a numerical simulation model that employs full three-dimensional Navier-Stokes equations and the finite difference procedure is utilized f...
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| Veröffentlicht in: | Journal of irrigation and drainage engineering 1993, Vol.119 (1), p.142-156 |
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| creator | Chang, Wen-Jaur Hills, David J |
| description | The water infiltration rate during sprinkle irrigation is known to decrease due to the impact effects of water droplets on soil-surface structure. In this paper, a numerical simulation model that employs full three-dimensional Navier-Stokes equations and the finite difference procedure is utilized for studying pressure and shear distribution on a soil surface following sprinkler droplet impact. Variables include impact velocity (800 cm/s and 580 cm/s), angle of impact (90°, 60°, and 45°), and surface condition (with and without a water layer). The results indicate that droplets impacting at oblique angles rather than vertically have less impact pressure and less impact force, but a higher shear velocity. For example, the shear velocity, which is a major contributor to soil surface crusting, is approximately 50% higher for a 60° impact than for a vertical impact. The effects of a water layer are to lessen the peak-impact pressure and the shear velocity, but to increase the impact force. |
| doi_str_mv | 10.1061/(ASCE)0733-9437(1993)119:1(142) |
| format | Article |
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I: Impact Simulation</title><source>American Society of Civil Engineers:NESLI2:Journals:2014</source><creator>Chang, Wen-Jaur ; Hills, David J</creator><creatorcontrib>Chang, Wen-Jaur ; Hills, David J</creatorcontrib><description>The water infiltration rate during sprinkle irrigation is known to decrease due to the impact effects of water droplets on soil-surface structure. In this paper, a numerical simulation model that employs full three-dimensional Navier-Stokes equations and the finite difference procedure is utilized for studying pressure and shear distribution on a soil surface following sprinkler droplet impact. Variables include impact velocity (800 cm/s and 580 cm/s), angle of impact (90°, 60°, and 45°), and surface condition (with and without a water layer). The results indicate that droplets impacting at oblique angles rather than vertically have less impact pressure and less impact force, but a higher shear velocity. For example, the shear velocity, which is a major contributor to soil surface crusting, is approximately 50% higher for a 60° impact than for a vertical impact. The effects of a water layer are to lessen the peak-impact pressure and the shear velocity, but to increase the impact force.</description><identifier>ISSN: 0733-9437</identifier><identifier>EISSN: 1943-4774</identifier><identifier>DOI: 10.1061/(ASCE)0733-9437(1993)119:1(142)</identifier><identifier>CODEN: JIDEDH</identifier><language>eng</language><publisher>Reston, VA: American Society of Civil Engineers</publisher><subject>Agricultural and forest climatology and meteorology. Irrigation. Drainage ; Agronomy. Soil science and plant productions ; Biological and medical sciences ; BOUILLIE ; CARACT MORFOLOGICAS DEL SUELO ; Computer simulation ; ESTRUCTURA DEL SUELO ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Groundwater ; Impregnation ; INFILTRACION ; INFILTRATION ; Irrigation ; IRRIGATION PAR ASPERSION ; Irrigation. Drainage ; Leaching ; LIQUIDOS PULVERIZABLES ; MODELE DE SIMULATION ; MODELOS DE SIMULACION ; Q1 ; RIEGO POR ASPERSION ; SIMULATION MODELS ; SOIL MORPHOLOGICAL FEATURES ; SOIL STRUCTURE ; Soils ; SPRAYS ; SPRINKLER IRRIGATION ; STRUCTURE DU SOL ; SURFACE LAYERS ; TECHNICAL PAPERS ; TRAIT MORPHOLOGIQUE DU SOL</subject><ispartof>Journal of irrigation and drainage engineering, 1993, Vol.119 (1), p.142-156</ispartof><rights>Copyright © 1993 American Society of Civil Engineers</rights><rights>1993 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a436t-723a0ed2a43846674678efcfa2789d015acd03784da545eb95de4c8517e17d173</citedby><cites>FETCH-LOGICAL-a436t-723a0ed2a43846674678efcfa2789d015acd03784da545eb95de4c8517e17d173</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttp://ascelibrary.org/doi/pdf/10.1061/(ASCE)0733-9437(1993)119:1(142)$$EPDF$$P50$$Gasce$$H</linktopdf><linktohtml>$$Uhttp://ascelibrary.org/doi/abs/10.1061/(ASCE)0733-9437(1993)119:1(142)$$EHTML$$P50$$Gasce$$H</linktohtml><link.rule.ids>314,780,784,4022,27922,27923,27924,75964,75972</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4611449$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Chang, Wen-Jaur</creatorcontrib><creatorcontrib>Hills, David J</creatorcontrib><title>Sprinkler Droplet Effects on Infiltration. I: Impact Simulation</title><title>Journal of irrigation and drainage engineering</title><description>The water infiltration rate during sprinkle irrigation is known to decrease due to the impact effects of water droplets on soil-surface structure. In this paper, a numerical simulation model that employs full three-dimensional Navier-Stokes equations and the finite difference procedure is utilized for studying pressure and shear distribution on a soil surface following sprinkler droplet impact. Variables include impact velocity (800 cm/s and 580 cm/s), angle of impact (90°, 60°, and 45°), and surface condition (with and without a water layer). The results indicate that droplets impacting at oblique angles rather than vertically have less impact pressure and less impact force, but a higher shear velocity. For example, the shear velocity, which is a major contributor to soil surface crusting, is approximately 50% higher for a 60° impact than for a vertical impact. The effects of a water layer are to lessen the peak-impact pressure and the shear velocity, but to increase the impact force.</description><subject>Agricultural and forest climatology and meteorology. Irrigation. Drainage</subject><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>BOUILLIE</subject><subject>CARACT MORFOLOGICAS DEL SUELO</subject><subject>Computer simulation</subject><subject>ESTRUCTURA DEL SUELO</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General agronomy. Plant production</subject><subject>Groundwater</subject><subject>Impregnation</subject><subject>INFILTRACION</subject><subject>INFILTRATION</subject><subject>Irrigation</subject><subject>IRRIGATION PAR ASPERSION</subject><subject>Irrigation. Drainage</subject><subject>Leaching</subject><subject>LIQUIDOS PULVERIZABLES</subject><subject>MODELE DE SIMULATION</subject><subject>MODELOS DE SIMULACION</subject><subject>Q1</subject><subject>RIEGO POR ASPERSION</subject><subject>SIMULATION MODELS</subject><subject>SOIL MORPHOLOGICAL FEATURES</subject><subject>SOIL STRUCTURE</subject><subject>Soils</subject><subject>SPRAYS</subject><subject>SPRINKLER IRRIGATION</subject><subject>STRUCTURE DU SOL</subject><subject>SURFACE LAYERS</subject><subject>TECHNICAL PAPERS</subject><subject>TRAIT MORPHOLOGIQUE DU SOL</subject><issn>0733-9437</issn><issn>1943-4774</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNqNkUtv1DAURi1EJYaWP8AqCwQzixRf-8aPLkDVzNAGVWIxVGJnGcdGKZlksDML_j0OKV3SWrL8Ovp8dQ8h74CeAxXwfnm5W29XVHJeauRyCVrzFYC-gCUgWz0jC8j3JUqJz8nigXtBXqZ0RymgpHRBPu4Ose1_dj4WmzgcOj8W2xC8G1Mx9EXdh7Ybox3boT8v6oui3h-sG4tduz92f2_PyEmwXfKv7tdTcvtp-3V9Xd58uarXlzelRS7GUjJuqW9YPikUQqKQygcXLJNKNxQq6xrKpcLGVlj577pqPDpVgfQgG5D8lLydcw9x-HX0aTT7Njnfdbb3wzEZJhhXuuJPAlluxqMgCNQKGTwOcqFBSZHBDzPo4pBS9MHk3u5t_G2AmsmZMZMzM7kwkwszOTPZmQGTneWAN_c_2eRsF6LtXZseUlAAIOqMvZ6xYAdjf8SM3O40ogI6VfttfswR3twNx9hnL-Zzvdlurmn2DppOA6aJbN7_q-__5f0Bg6C1Nw</recordid><startdate>1993</startdate><enddate>1993</enddate><creator>Chang, Wen-Jaur</creator><creator>Hills, David J</creator><general>American Society of Civil Engineers</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>7SC</scope><scope>7SU</scope><scope>C1K</scope><scope>JQ2</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope></search><sort><creationdate>1993</creationdate><title>Sprinkler Droplet Effects on Infiltration. I: Impact Simulation</title><author>Chang, Wen-Jaur ; Hills, David J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a436t-723a0ed2a43846674678efcfa2789d015acd03784da545eb95de4c8517e17d173</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Agricultural and forest climatology and meteorology. Irrigation. Drainage</topic><topic>Agronomy. Soil science and plant productions</topic><topic>Biological and medical sciences</topic><topic>BOUILLIE</topic><topic>CARACT MORFOLOGICAS DEL SUELO</topic><topic>Computer simulation</topic><topic>ESTRUCTURA DEL SUELO</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General agronomy. Plant production</topic><topic>Groundwater</topic><topic>Impregnation</topic><topic>INFILTRACION</topic><topic>INFILTRATION</topic><topic>Irrigation</topic><topic>IRRIGATION PAR ASPERSION</topic><topic>Irrigation. 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I: Impact Simulation</atitle><jtitle>Journal of irrigation and drainage engineering</jtitle><date>1993</date><risdate>1993</risdate><volume>119</volume><issue>1</issue><spage>142</spage><epage>156</epage><pages>142-156</pages><issn>0733-9437</issn><eissn>1943-4774</eissn><coden>JIDEDH</coden><abstract>The water infiltration rate during sprinkle irrigation is known to decrease due to the impact effects of water droplets on soil-surface structure. In this paper, a numerical simulation model that employs full three-dimensional Navier-Stokes equations and the finite difference procedure is utilized for studying pressure and shear distribution on a soil surface following sprinkler droplet impact. Variables include impact velocity (800 cm/s and 580 cm/s), angle of impact (90°, 60°, and 45°), and surface condition (with and without a water layer). The results indicate that droplets impacting at oblique angles rather than vertically have less impact pressure and less impact force, but a higher shear velocity. For example, the shear velocity, which is a major contributor to soil surface crusting, is approximately 50% higher for a 60° impact than for a vertical impact. The effects of a water layer are to lessen the peak-impact pressure and the shear velocity, but to increase the impact force.</abstract><cop>Reston, VA</cop><pub>American Society of Civil Engineers</pub><doi>10.1061/(ASCE)0733-9437(1993)119:1(142)</doi><tpages>15</tpages></addata></record> |
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| source | American Society of Civil Engineers:NESLI2:Journals:2014 |
| subjects | Agricultural and forest climatology and meteorology. Irrigation. Drainage Agronomy. Soil science and plant productions Biological and medical sciences BOUILLIE CARACT MORFOLOGICAS DEL SUELO Computer simulation ESTRUCTURA DEL SUELO Fundamental and applied biological sciences. Psychology General agronomy. Plant production Groundwater Impregnation INFILTRACION INFILTRATION Irrigation IRRIGATION PAR ASPERSION Irrigation. Drainage Leaching LIQUIDOS PULVERIZABLES MODELE DE SIMULATION MODELOS DE SIMULACION Q1 RIEGO POR ASPERSION SIMULATION MODELS SOIL MORPHOLOGICAL FEATURES SOIL STRUCTURE Soils SPRAYS SPRINKLER IRRIGATION STRUCTURE DU SOL SURFACE LAYERS TECHNICAL PAPERS TRAIT MORPHOLOGIQUE DU SOL |
| title | Sprinkler Droplet Effects on Infiltration. I: Impact Simulation |
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