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| Influence of different parameters on numerical simulation of vertical-axis marine current turbine based on OpenFOAM |
| JI Renwei1,2, SHENG Qihu1,2*, SUN Ke1,2, LI Yan1,2, ZHANG Yuquan3, ZHANG Liang1,2 |
| 1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001, China; 2. Institute of Ocean Renewable Energy System, Harbin Engineering University, Harbin, Heilongjiang 150001, China; 3. College of Energy and Electrical Engineering, Hohai University, Nanjing, Jiangsu 211100, China |
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Abstract Using the PimpleDyMFoam solver in open-source computing software OpenFOAM, based on the SST k-ω turbulence model and PIMPLE algorithm, a numerical simulation method of vertical-axis marine current turbines(VMCTs)is proposed, and the calculated results are compared with the experimental results. The results show that the numerical simulation method is feasible. Compared with other commercial softwares, this method has the advantages of higher solution efficiency and greater flexibility. According to the needs of users, the solver can be built on the basis of original code, and the corresponding discrete method can be optimized. This method can achieve optimization algorithms, save time and cost, etc. Secondly, the effects of different parameters(mesh density, time step, the selection of sidewall boundary conditions and inlet turbulence intensity)on numerical simulation of the VMCT are studied in detail. The findings summarize an effective CFD simulation strategy based on OpenFOAM and provide a valuable reference for future CFD simulations of VMCTs.
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Received: 16 October 2018
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