空气单蓄热室状加热炉内传输过程的数值模拟

Numerical simulation of transport process in air uni-regenerative chamber furnace

以某企业拟建的高温蓄热实验炉为研究对象,对该炉内发生的流动、燃烧和传热过程进行了数值模拟,得到了炉内速度场、温度场和浓度场的分布情况.通过分别改变空气喷口和燃料喷口间的夹角、空气喷口的长宽比来优化炉内的流场和温度场.结果表明,空气喷口水平交角对炉内温度场均匀性的影响很大,当空气喷口水平交角为8°时炉内温度均匀性最好;在空气喷口长宽比为3∶1的情况下,可以改善炉内温度场的均匀性,以避免产生局部高温区.

Numerical simulation was performed to study the fluid flow, combustion and heat transfer in a high-temperature regenerative experimental furnace of some company, and the distributions of velocity, temperature and concentration were obtained. The fluid flow and temperature distribution were optimized by altering the length-width ratio of the air spout and the corner dimension between the air spout and the fuel spout. Results show that the uniformity of temperature field is greatly influenced by the corner dimension between the air spout and the fuel spout; when the corner dimension is 8 degrees in the experimental furnace, the uniformity of temperature field is the best. The uniformity of the temperature field can be ameliorated to avoid the generation of high-temperature region while the length-width ratio of the air spout is3：1