长宽比对双进水管结构矩形圆弧角养殖池排污特性的影响

doi:10.16535/j.cnki.dlhyxb.2022-311

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大连海洋大学学报 ›› 2023, Vol. 38 ›› Issue (4) : 707-716. DOI: 10.16535/j.cnki.dlhyxb.2022-311

长宽比对双进水管结构矩形圆弧角养殖池排污特性的影响

史宪莹,李猛,任效忠*,冯德军,刘航飞,周寅鑫,刘海波,赵晨旭

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Influence of length width ratio on sewage discharge characteristics in acircular rectangular angle culture tank with double inlet pipe structure

SHI Xianying，LI Meng，REN Xiaozhong*，FENG Dejun，LIU Hangfei，ZHOU Yinxin，LIU Haibo，ZHAO Chenxu

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摘要

为探究长宽比参数(即L/W，L为养殖池长边，W为养殖池宽边)对双进水管结构矩形圆弧角养殖池排污特性的影响，构建了固-液两相流数值计算模型(DPM离散项模型与RNG k-ε 连续相模型)，定义了适用于较大长宽比养殖池排污模拟的粒子重叠撒布方式，在L/W为1.0～1.9工况下，对两种进水管布置方式(进水管布置在长边中心和宽边中心)的养殖池排污效果进行了数值模拟试验。结果表明：L/W=1.0～1.5时，两种进水管布置方式的养殖池内粒子排除率均可达95%以上，随着长宽比的增加，养殖池内的排污效果变差；L/W=1.6～1.8时，进水管布置在长边中心时，未能排除的粒子在养殖池内汇聚更为集中。研究表明，在实际矩形圆弧角养殖池建设过程中，为使养殖池具有良好的排污性能和提高场地利用率，可选择L/W=1.0～1.5的池形进行建造。

Abstract

In order to explore influence of length (long side of aquaculture tank)-width (wide side of the aquaculture tank) ratio parameters on sewage collection and discharge characteristics of the rectangular arc angle aquaculture tank with double intake pipes, a numerical calculation model (DPM discrete term model and RNG k-ε continuous phase model) for solid-liquid two-phase flows is constructed to simulate the sewage discharge characteristics in the aquaculture tank. The particle overlapping distribution method applicable to the sewage discharge simulation of the aquaculture tank with a large proportion of length and width is defined by such a model. In the study, a sewage discharge simulation experiment was carried out for two double inlet pipes (double inlet pipes arranged at the center of the long side and the center of the wide side) with L/W=1.0-1.9. The results showed that the particle removal rate reached more than 95% when the range of L/W=1.0-1.5. With the increase of the length-to-width ratio, the effect of collecting and discharging sewage the tank was gradually deteriorated. When the inlet pipe was arranged in the center of the long side with the range of L/W=1.6-1.8, the particles failed to be discharged were more concentrated in the tank. Therefore, when constructing a rectangular arc angle aquaculture tank, the tank shape of L/W=1.0-1.5 was selected for construction to achieve better sewage collecting and discharging performance and site utilization.

导出引用

史宪莹, 李猛, 任效忠, 冯德军, 刘航飞, 周寅鑫, 刘海波, 赵晨旭. 长宽比对双进水管结构矩形圆弧角养殖池排污特性的影响[J]. 大连海洋大学学报, 2023, 38(4): 707-716 https://doi.org/10.16535/j.cnki.dlhyxb.2022-311

SHI Xianying, LI Meng, REN Xiaozhong, FENG Dejun, LIU Hangfei, ZHOU Yinxin, LIU Haibo, ZHAO Chenxu. Influence of length width ratio on sewage discharge characteristics in acircular rectangular angle culture tank with double inlet pipe structure[J]. Journal of Dalian Fisheries University, 2023, 38(4): 707-716 https://doi.org/10.16535/j.cnki.dlhyxb.2022-311

中图分类号： S 955