中南大学学报（自然科学版）2016，Vol.47Issue(6)：1843-1849,7.DOI:10.11817/j.issn.1672-7207.2016.06.004
低负荷下蓄热式加热炉燃烧策略数值模拟
Numerical simulation of combustion strategy in a regenerative reheating furnace under low thermal load
摘要
Abstract
In order to solve the problem of combustion performance decrease caused by the decrease of thermal load in a regenerative reheating furnace, a mathematical model was developed to describe heat transfer, gas flow and combustion processes in a regenerative reheating furnace by Fluent. The standard k−εturbulence model was used for modeling the gas flow. The mean mixture fraction/PDF model was used to describe combustion process in the furnace. The discrete ordinates model was used for modeling the radiative heat transfer. The characteristics of gas flow, distribution of volume fraction of gas species and temperature distribution for furnace under proportional control and pulse control under low thermal load were analyzed by the model. The results show that under low thermal load, the pulse control is beneficial to strengthen the mix of gas and air, increase the combustion rate, prevent the accumulation of O2 on the surface of billet,decrease the oxidation burning loss of the billet, and improve the uniformity of distribution of heat flux to billet surface along the furnace width direction.关键词
蓄热式加热炉/低负荷/数值模拟/燃烧策略/比例控制/脉冲控制Key words
regenerative reheating furnace/low thermal load/numerical simulation/combustion strategy/proportional control/pulse control分类
矿业与冶金引用本文复制引用
刘颖,刘义平,陶曙明,温治..低负荷下蓄热式加热炉燃烧策略数值模拟[J].中南大学学报（自然科学版）,2016,47(6):1843-1849,7.基金项目
中央高校基本科研业务费专项资金资助项目(FRF-SD-12-007B)(Project(FRF-SD-12-007B) supported by the Fundamental Research Funds for the Central Universities) （FRF-SD-12-007B）
