渠道走向及几何尺寸对灌溉水增温的影响
渠道走向及几何尺寸对灌溉水增温的影响
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GUO Jiawen , PU Xunchi and HUANG Ruixian
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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S275.3; [目的]寻找合适的渠道走向和几何尺寸,优化渠道水温度.[方法]根据渠道增温过程原理,建立了适用于渠道表面水体吸收太阳短波辐射的计算模型,并通过试验验证该模型,在此基础上,利用该模型模拟不同的渠道几何尺寸(宽深比分别为1:1、1.5:1、2:1)和渠道走向(东西走向、南北走向、与东西方向呈45°夹角)下灌溉水的增温效率.[结果]东西走向且宽深比最大的渠道增温效率最高,宽深比为2:1的渠道的增温效率比1:1的渠道高42.42％～256％;东西走向的渠道增温效率比南北走向的渠道高58.45％～296％,说明该模型具有一定的精度及准确度.[结论]增大灌溉渠道宽深比并使其走向趋向东西走向,可以有效利用灌溉水输运过程中的自然增温过程提高水温,降低低温灌溉水对农作物生长的影响.
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渠道走向及几何尺寸对灌溉水增温的影响
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TN_cdi_wanfang_journals_ggps202011018
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202011018
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1672-3317
DOI
10.13522/j.cnki.ggps.2019019
