CAJ | 학술논문

目前燃煤电厂烟风道设计主要依据设计规程，缺少对烟道体内流动情况的细化分析及优化设计，同时也欠缺对烟道内撑结构的考虑．本文利用计算流体动力学软件 Fluent 对烟道常见弯头添加常规导流板进行数值模拟，在分析讨论内撑结构及导流板对烟道内部造成影响的基础上，对原管道进行优化改造，使得出口烟气走向更加均匀，压力损失与原模型相比减小40.85%．本设计可为新型导流装置的设计提供可靠建议，有利于电厂的节能减排．
목전연매전엄연풍도설계주요의거설계규정，결소대연도체내류동정황적세화분석급우화설계，동시야흠결대연도내탱결구적고필．본문이용계산류체동역학연건 Fluent 대연도상견만두첨가상규도류판진행수치모의，재분석토론내탱결구급도류판대연도내부조성영향적기출상，대원관도진행우화개조，사득출구연기주향경가균균，압력손실여원모형상비감소40.85%．본설계가위신형도류장치적설계제공가고건의，유리우전엄적절능감배．
During the design period of flue gas pipe in coal-fired power plant,the design regulation usually neglects the detailed fluid flow field in the flue gas pipe. As such,the influence of inner supports on the flow and drag is not taken into account. In this paper,the effect of inner supports in the flue gas pipe on the flow and pressure field was analyzed,and common bend with conventional guide plates was simulated using computational fluid dynamics soft-ware named Fluent. Based on the results analysis,a new design of guide plates was proposed. The results show that the pressure loss of new design pipe could be reduced by 40.85%compared with the common pipe with inner supports and guide plates. Also,the flow distribution at the outlet is more uniform than that with inner supports. This design suggests a new type of guide plates for energy saving in power plants.