Under the circumstances of continuous advancement in offshore dredging operations, port expansions and land reclamation projects, suction dredgers are confronted with technical challenges such as increased pressure loss, unstable flow state and excessive energy consumption in the mud transportation process. To enhance the accuracy and practicality of the performance evaluation for mud transportation and improve the engineering application, this study developed a performance evaluation system based on computational analysis. By calculating key parameters such as slurry density, average flow velocity, critical flow velocity, total pressure loss and unit solid mass transportation power, a set of evaluation indicators covering dimensions such as transportation capacity, operational reliability, system load and economy were constructed. Finally, a complete comprehensive evaluation framework was formed. Experimental data show that under typical operation conditions, the average relative deviation of total pressure loss is 4.72%, the average relative deviation of unit solid mass transportation power is 5.36%, and the accuracy of comprehensive grade determination reaches 91.7%. Its overall performance is significantly superior to traditional CFD simulation and empirical formula calculations. The study confirmed that this evaluation system can effectively identify the mud transportation conditions of suction dredgers, providing reliable data support for parameter optimization, fault diagnosis and construction scheme optimization.
Povzetek: Prispevek obravnava ocenjevanje učinkovitosti transporta mulja pri bagrih s sesalnim lijakom na podlagi računskih metod. Oblikovan je okvir, ki povezuje izračun ključnih parametrov, sistem kazalnikov in celoviti model vrednotenja. Rezultati kažejo boljše ravnotežje med natančnostjo, učinkovitostjo in uporabnostjo pri odločanju kot pri klasičnih pristopih v tipičnih delovnih pogojih med poglabljanjem.
