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| Research on speed characteristic curve of self-driving rotary energy recovery device |
| YANG Dazhuang*, YUAN Danqing, LI Hui |
| School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract In order to investigate the characteristic curve of self-driving rotary displacement energy recovery device, a new speed prediction model is proposed by using the method of theoretical analysis. And applying the Fluent 6DOF model, a numerical model for the rigid passive rotation of the rotor of a self-driving rotating energy recovery device was constructed by defining physical parameters such as mass and moment of inertia of the solid rotor through UDF files. The velocity distribution of the rotor under the condition of an inlet flow rate Q was about 70.2 m3/h,and an outlet high pressure p was 6 MPa, as well as the condition and the variation relation of the rotor driving torque with time under each condition were obtained. The variation law of the rotor speed during the starting process was summarized. The results show that the starting time of the rotor under all operating conditions is less than 2 s, and the rotor speed is proportional to the flow rate. The theoretical model and numerical model have high degree of agreement, with relative error under condition of Q was 26.3 m3/h is the highest(14.9%), and the relative error under condition of Q was 61.4 m3/h is the smallest(0.77%).
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Received: 09 May 2022
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