Scaling Orchestration in Physical Model Test of Oscillating Buoy Wave Energy Converter

Abstract

The physical model test interlinks the concept design and sea trial during the commercial utilization of wave energy converter. Aiming at the oscillating buoy wave energy converter, the energy conversion principle is firstly decomposed. Then, the model scale requirement of fluid motion and corresponding hydrodynamic similarity criterion considered in the physical model test are introduced. Finally, the solution of scaling orchestration problem is proposed considering the overall model scale in different energy conversion processes. The hydrodynamic similarity criterion is selected based on the working mechanism of the energy-capturing body only in contact with water, and the model scale requirements during the other stages of energy conversion structure are determined by the main mechanical factors. The first-stage energy conversion of device is recommended to meet the Froude similarity requirements, while the second-stage and third-stage energy conversions only need to meet the power similarity requirements. The power scale ratio in the three energy conversions is recommended to be consistent with the Froude similarity, and there are no requirements of geometric shape of second-stage and third-stage energy conversions to meet the similarity criteria.

Study on purification effect of river ammonia nitrogen and optimization of layout parameters in the combination of ecological spur dikes and deep pool shoals: Experiments and MIKE21

“…According to the field research, the flow velocity in the study area ranged from 0.019 to 0.256 m/s. Three working conditions were established according to Froude's law (Qiao et al, 2021): and Q 3 (2.5 Â 10 À3 m 3 /s). A3), and the average flow velocity at each measurement point was obtained.…”

“…According to the field research, the flow velocity in the study area ranged from 0.019 to 0.256 m/s. Three working conditions were established according to Froude's law (Qiao et al, 2021): Q 1 flow (1.5 × 10 −3 m 3 /s), Q 2 flow (2 × 10 −3 m 3 /s), and Q 3 flow (2.5 × 10 −3 m 3 /s). Four layouts were selected for the ESDDPS: Layout 1: staggered spur dikes and different side deep pool shoals, Layout 2: staggered spur dikes and same side deep pool shoals, Layout 3: counterpart spur dikes and different side deep pool shoals, and Layout 4: counterpart spur dikes and same side deep pool shoals.…”