圆形鱼缸中的水流模式及其与流速和喷嘴特征的关系。
Flow patterns in circular fish tanks and its relations with flow rate and nozzle features.
机构信息
Agricultural and Biosystems Engineering Department, Faculty of Agriculture, Benha University, P.O. Box 13736, Moshtohor, Toukh, Kalubia, Egypt.
Basic and Applied Science Department, College of Engineering and Technology, Arab Academy for Science and Technology and Maritime Transport (AASTMT), P.O. Box 2033, Cairo, Egypt.
出版信息
Sci Rep. 2022 Jul 28;12(1):12883. doi: 10.1038/s41598-022-17186-z.
The main aim of this research is to study the effect of flow rate, diameter and number of nozzles on the rotational velocity, impulse force and average velocity of water in circular fish tanks. The results indicated that, the rotational velocity increases with increasing flow rates from 5 to 75 m h by using 10 and 15 mm nozzles diameter with nozzles number of 5, 10, 15, 20, 25 and 30. The same results were also obtained when 20 and 25 mm nozzle diameter with nozzles number of 3, 6, 9, 12 and 15 were used. The impulse force of water decreases with increasing nozzle diameter from 10.0 to 15.0 mm with 5, 10, 15, 20, 25 and 30 nozzles and from 20.0 to 25.0 mm with 3, 6, 9, 12 and 15 nozzles. When the nozzle diameter increased from 10 to 25 mm the impulse force of water decreased with 15 nozzles. The average velocity of water decreases with increasing nozzles diameter from 10.0 to 15.0 mm with 5, 10, 15, 20, 25 and 30 nozzles and from 20.0 to 25.0 mm with 3, 6, 9, 12 and 15 nozzles. When the nozzle diameter increased from 10 to 25 mm, the average velocity ranged from 1.07 to 48.76 cm s for all treatments under study.
本研究的主要目的是研究流量、喷嘴直径和数量对圆形鱼缸中水体的旋转速度、脉冲力和平均速度的影响。结果表明，当使用直径为 10 和 15 毫米的喷嘴且喷嘴数量为 5、10、15、20、25 和 30 时，流量从 5 增加到 75 m/h 时，旋转速度会增加。当使用直径为 20 和 25 毫米的喷嘴且喷嘴数量为 3、6、9、12 和 15 时，也得到了相同的结果。当喷嘴直径从 10.0 增加到 15.0 毫米时，使用 5、10、15、20、25 和 30 个喷嘴时，水的脉冲力会减小，而使用 3、6、9、12 和 15 个喷嘴时，喷嘴直径从 20.0 增加到 25.0 毫米时，水的脉冲力也会减小。当喷嘴直径从 10 增加到 25 毫米时，使用 15 个喷嘴时水的脉冲力会减小。当喷嘴直径从 10.0 增加到 15.0 毫米时，使用 5、10、15、20、25 和 30 个喷嘴时，水的平均速度会减小，而使用 3、6、9、12 和 15 个喷嘴时，喷嘴直径从 20.0 增加到 25.0 毫米时，水的平均速度也会减小。当喷嘴直径从 10 增加到 25 毫米时，所有处理组的平均速度范围为 1.07 到 48.76 cm/s。
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