The theoretical study of double exothermic combustible reaction and thermal ignition of viscous dissipative Oldroyd 8-constant liquid is examined in a channel. Without consumption of material, the fully developed two-step combustible reaction for the non-Newtonian fluid occurred in a bounded medium. The flow is propelled by reaction activation energy, upper wall motion and pre-exponential chemical kinetics that stimulates internal temperature. The overall solutions for the dimensionless viscoelastic exothermic reaction model is obtained by integrating collocation weighted residual techniques. In graphical and tabular form, the solution results are presented for the fluid flow rate, energy field and the branch-chain bifurcation.

在通道中研究了粘性耗散Oldroyd 8常数液体的双重放热可燃反应和热着火的理论研究。在不消耗材料的情况下，针对非牛顿流体的完全展开的两步可燃反应在有限介质中发生。反应活化能，上壁运动和预指数化学动力学推动了内部流动，从而推动了流动。无因次粘弹性放热反应模型的整体解决方案是通过整合搭配加权残差技术获得的。以图形和表格的形式，给出了流体流速，能量场和支链分叉的求解结果。