| Pipe sizing optimization of water distribution networks using the improved hybrid growth optimizer |
| کد مقاله : 1486-IWWA |
| نویسندگان |
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کیارش بیابانی همدانی *1، مرجان رواجی1، حمید امیری1، علی نشاط‌پور2 1کارشناس دفتر مطالعات و بررسی‌های فنی، شرکت مهندسی آب و فاضلاب کشور 2مدیر کل دفتر مطالعات و بررسی‌های فنی، شرکت مهندسی آب و فاضلاب کشور |
| چکیده مقاله |
| The optimal design of water distribution networks (WDNs) remains a challenging problem in civil engineering, requiring the determination of optimal pipe diameters to minimize construction costs while satisfying minimum pressure constraints at demand nodes. This study investigates the performance of the improved hybrid growth optimizer (IHGO) for the optimal design of the Hanoi water distribution network, a widely recognized benchmark problem in the WDN optimization literature. The Hanoi network consists of 32 nodes, 34 pipes, and a single reservoir with a fixed head of 100 m, with a minimum required pressure of 30 m at all demand nodes. IHGO is an improved variant of the growth optimizer (GO), a recent metaheuristic inspired by social growth processes. The proposed IHGO incorporates the exploration phase of the improved arithmetic optimization algorithm (IAOA) into the learning phase of GO, modifies the replacement strategy to preserve the best-so-far solution, restructures the hierarchical framework, and adjusts the reflection phase to promote exploitation of promising regions. These enhancements address GO's limitations in solution accuracy, computational efficiency, and robustness. Pipe diameters are selected from six commercially available sizes, and hydraulic simulation is performed using the EPANET-MATLAB Toolkit. The objective function combines pipe construction cost, and a penalty function handles pressure constraint violations. Results obtained by IHGO are compared with GO and best-known solutions reported in the literature. This comparison demonstrates IHGO's capability to achieve optimal or near-optimal solutions with competitive computational effort, highlighting its potential as an effective tool for water distribution network design optimization. |
| کلیدواژه ها |
| Metaheuristics, Improved hybrid growth optimizer, Engineering optimization, Water distribution network, Hanoi network, Pipe sizing optimization |
| وضعیت: پذیرفته شده برای ارسال فایل های ارائه پوستر |
