基于有限体积法的废弃井地热开采数值模拟研究  

Numerical Simulation Study of Geothermal Mining in Abandoned Wells Based on Finite Volume Method

作　　者：刘夕源 Liu Xiyuan(Chengdu University of Technology,Chengdu,China)

机构地区：[1]成都理工大学,四川成都

出　　处：《科学技术创新》2024年第9期225-228,共4页Scientific and Technological Innovation

摘　　要：为分析不同工程参数对于地热井实际生产的影响,建立了地层-井筒三位全尺寸模型,并采用有限体积法进行数值模拟。通过对模型的分析得出入口流速,入口温度对于地热井出口温度及采热功率的影响。模型与实际工况的误差在5%以内。结果表明,在实际生产过程中,应当采用尽量低的入口温度,适中的入口流速,以保证地热井的效率最大化。In order to analyze the influence of different engineering parameters on the actual production of geothermal wells,a three-dimensional full-size model of formation-wellbore was established and numerically simulated by the finite volume method.Through the analysis of the model,the effects of inlet and outlet flow rate and inlet temperature on the outlet temperature and heat recovery power of geothermal wells were obtained.The error between the model and the actual working condition is within 5%.The results show that in the actual production process,the inlet temperature should be as low as possible and the inlet flow rate should be moderate to ensure that the efficiency of the geothermal well is maximized.

关 键 词：废弃井地热 有限体积法 数值模拟 出口温度 采热功率 

分 类 号：TK52[动力工程及工程热物理—热能工程]