LI Wei, ZHANG Bo, WANG Fei, et al. Numerical simulation on infrared radiation characteristics of round to rectangular nozzles with different chevrons considering engine components[J]. 2014, (8).
LI Wei, ZHANG Bo, WANG Fei, et al. Numerical simulation on infrared radiation characteristics of round to rectangular nozzles with different chevrons considering engine components[J]. 2014, (8).DOI: 10.13224/j.cnki.jasp.2014.08.008.
Numerical simulation on infrared radiation characteristics of round to rectangular nozzles with different chevrons considering engine components
the round to rectangular nozzle transition from axial symmetry convergent-divergent nozzle was designed
different chevrons were devised and assembled to the nozzle exit. Numerical simulations were carried on the flow
heat transfer and infrared radiation characteristics. The results indicate that the precision of the infrared radiation intensity distributions were more in line with the actual rules by taking the hot components into account. Compared to the basic round to rectangular nozzle
the length of high-temperature regions decrease with multiple small chevrons and further decreasesd with simple large one
individually. Furthermore
the infrared radiation intensity decreases obviously detected from 0 degree. The plume mixing with ambient flow and infrared suppressing characteristics are enhanced in rectangular nozzle with chevrons from axis one. At the same time