曲河道污染物数值模型设计 毕业设计定稿

工业大学毕业设计（论文）说明书共页第1页A2A2A2A2A2A2A2A2A2A2A2A2A2A3A2A2A2A2A2A4A2A2A2A2A2A5A2A2A2A2A2A2A2A2A2A2A2A2A2摘要在本课题的研究中，应用水动力学及污染物传输耦合的数值计算的数值模型，通过建立基于二维和三维不可压缩流体NAVIERSTOKES方程和湍流K模型的重力流及污染物数值计算的数学模型1来模拟河道的弯曲度对不可分解污染物在弯曲河道中的分布的影响，这对处理河道中的突发性污染事件的科学决策有一定的参考作用。由二维和三维的模拟结果可知，河道弯曲度对污染物在河道内的分布主要取决于流速和重力作用的影响。流速的改变主要出现在河道的弯曲处，这时会在弯道处出现回流区和死水区，它会阻碍密度较大的污染物的流动，使得这一侧污染物浓度较大。而在污染物随着水流G5460G991G9228流动的过程中，重力作用G1075会G7186现出来。由于污染物的密度G8616水要大，这使得污染物在流动的过程中G5460河G5225G8797G19489G991来，G13499而在河道G5225G18108G5430G6116G1209河道中G5527G13459G1038对G12228G17736的G3361G3616回G13870G5347G19675G14645的G6205G6967过程。关键字A1河流污染物环境污染数值模拟FLUENTGAMBIT工业大学毕业设计（论文）说明书共页第G21页A0A0A0A0A0A0A0A0A0A0A0A0A0A6A0A0A0A0A0A7A0A0A0A0A0A8A0A0A0A0A0A0A0A0A0A0A0A0A0ABSTRACTG44G81G87G75G76G86G76G86G86G88G72G82G73G87G75G72G86G87G88G71G92G15G87G75G72G68G83G83G79G76G70G68G87G76G82G81G82G73G75G92G71G85G82G71G92G81G68G80G76G70G86G68G81G71G70G82G81G87G68G80G76G81G68G81G87G87G85G68G81G86G83G82G85G87G81G88G80G72G85G76G70G68G79G70G82G88G83G79G72G71G81G88G80G72G85G76G70G68G79G80G82G71G72G79G15G55G75G85G82G88G74G75G87G75G72G72G86G87G68G69G79G76G86G75G80G72G81G87G82G73G87G90G82G16G71G76G80G72G81G86G76G82G81G68G79G68G81G71G87G75G85G72G72G16G71G76G80G72G81G86G76G82G81G68G79G76G81G70G82G80G83G85G72G86G86G76G69G79G72G49G68G89G76G72G85G16G54G87G82G78G72G86G72G84G88G68G87G76G82G81G86G68G81G71G73G79G88G76G71G87G88G85G69G88G79G72G81G70G72G78G16G80G82G71G72G79G82G73G74G85G68G89G76G87G92G73G79G82G90G68G81G71G83G82G79G79G88G87G68G81G87G81G88G80G72G85G76G70G68G79G70G68G79G70G88G79G68G87G76G82G81G82G73G87G75G72G80G68G87G75G72G80G68G87G76G70G68G79G80G82G71G72G79G621G64G87G82G86G76G80G88G79G68G87G72G87G75G72G71G76G86G87G85G76G69G88G87G76G82G81G72G73G73G72G70G87G76G82G81G82G73G70G88G85G89G68G87G88G85G72G82G73G85G76G89G72G85G87G82G76G81G71G72G70G82G80G83G82G86G68G69G79G72G83G82G79G79G88G87G76G82G81G76G81G87G75G72G85G76G89G72G85G69G72G81G71G15G90G75G76G70G75G75G68G89G72G86G82G80G72G85G72G73G72G85G72G81G70G72G87G82G71G72G68G79G90G76G87G75G87G75G72G86G88G71G71G72G81G85G76G89G72G85G83G82G79G79G88G87G76G82G81G76G81G70G76G71G72G81G87G86G76G81G87G75G72G86G70G76G72G81G87G76G73G76G70G71G72G70G76G86G76G82G81G16G80G68G78G76G81G74G17G37G92G87G75G72G85G72G86G88G79G87G86G82G73G87G90G82G16G71G76G80G72G81G86G76G82G81G68G79G68G81G71G87G75G85G72G72G16G71G76G80G72G81G86G76G82G81G68G79G86G76G80G88G79G68G87G76G82G81G15G90G72G78G81G82G90G87G75G72G85G76G89G72G85G70G88G85G89G68G87G88G85G72G87G82G87G75G72G71G76G86G87G85G76G69G88G87G76G82G81G82G73G83G82G79G79G88G87G68G81G87G86G76G81G87G75G72G85G76G89G72G85G70G75G68G81G81G72G79G86G71G72G83G72G81G71G86G82G81G87G75G72G89G72G79G82G70G76G87G92G68G81G71G74G85G68G89G76G87G92G17G57G72G79G82G70G76G87G92G70G75G68G81G74G72G90G68G86G86G72G72G81G76G81G87G75G72G85G76G89G72G85G69G72G81G71G15G87G75G72G81G87G75G72G69G68G70G78G85G76G89G72G85G68G85G72G68G68G81G71G71G72G68G71G93G82G81G72G68G85G72G68G90G76G79G79G68G83G83G72G68G85G76G81G87G75G72G70G82G85G81G72G85G86G15G76G87G90G76G79G79G76G80G83G72G71G72G87G75G72G73G79G82G90G82G73G83G82G79G79G88G87G68G81G87G86G76G81G75G76G74G75G71G72G81G86G76G87G92G15G80G68G78G76G81G74G87G75G76G86G86G76G71G72G90G76G87G75G79G68G85G74G72G70G82G81G70G72G81G87G85G68G87G76G82G81G82G73G83G82G79G79G88G87G68G81G87G86G17G36G86G87G75G72G83G82G79G79G88G87G68G81G87G86G73G79G82G90G71G82G90G81G86G87G85G72G68G80G90G76G87G75G87G75G72G90G68G87G72G85G15G87G75G72G76G81G73G79G88G72G81G87G82G73G74G85G68G89G76G87G92G90G76G79G79G68G83G83G72G68G85G17G36G86G87G75G72G70G82G81G87G68G80G76G81G68G81G87G86G71G72G81G86G76G87G92G76G86G79G68G85G74G72G85G87G75G68G81G90G68G87G72G85G15G90G75G76G70G75G80G68G78G72G86G87G75G72G83G82G79G79G88G87G68G81G87G86G76G81G87G75G72G73G79G82G90G86G72G87G87G79G72G71G82G90G81G87G82G87G75G72G85G76G89G72G85G69G82G87G87G82G80G15G68G81G71G87G75G72G81G76G81G87G75G72G85G76G89G72G85G69G82G87G87G82G80G87G82G73G82G85G80G68G70G75G68G81G81G72G79G73G82G85G87G75G72G86G92G80G80G72G87G85G92G68G91G76G86G82G73G87G75G72G70G82G79G79G68G83G86G72G82G73G87G75G72G70G72G81G87G72G85G79G76G81G72G82G73G83G82G79G92G16G87G92G83G72G86G75G82G70G78G85G72G87G88G85G81G87G82G87G75G72G71G76G73G73G88G86G76G82G81G83G85G82G70G72G86G86G17KEYWORDSRIVERS，POLLUTANTS，ENVIRONMENTPOLLUTION，NUMERICALMODEL，FLUENT，GAMBIT工业大学毕业设计（论文）说明书共页第G22页A9A9A9A9A9A9A9A9A9A9A9A9A9A10A9A9A9A9A9A11A9A9A9A9A9A12A9A9A9A9A9A9A9A9A9A9A9A9A9目录目录31引言511A13A14A15A16A17A18512A19A20A21A22A23A24A25A26513A19A20A21A22A27A28A29A30A31A32A25614A33A34A35A36A23A24A37A38A39A40A41A28A42A43A44A45A46A20A47715A48A49A50A51A52A53A54A55A56A57A58A59A60A61A62A6382A64A65A66A67A68A69A70921A71A72A69A70A73A74A75922A76A77A78A79A80A81A82A83923A84A85A86A87A88A89A90A91A92A93A94A95A961024A86A87A97A98A99A100925A101A102A103A104A95A1051226A86A87A106A107A108A109133A110A111A112A113A101A114A103A1041431A110A111A112A113A101A114A115A103A104A116A1171432A110A111A118A119A120A12110A120A122A110A111A101A114A103A1041433A110A111A118A119A120A12135A120A122A110A111A101A114A103A1041534A110A111A118A119A120A12170A120A122A110A111A101A114A103A104154A123A124GAMBITA125FLUENTA126A127A128A129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