Parallel Tabulation Chemical Acceleration Algorithm And Its Applications In Simulation Of Oblique Detonation Wave

The numerical simulations of fine detonation wave structures with detailed reaction mechanism are computationally expensive,so it is necessary to develop an algorithm with high-accuracy and high-efficiency.In this paper,the oblique detonation wave generated by a H₂/O₂/N₂ incoming flow with 7 of Mach number is numerically simulated.From the perspectives of computational accuracy and computational efficiency,respectively,the effect of parallel strategy on the computational performance of the algorithm is investigated,the effects of parallel partition number and table deletion strategy on the computational performance of the algorithm are also investigated.Parallel strategy includes tabulation strategies represented by PLP(Purely Local Processing)and TP(Transposed Processing)and load balance strategies represented by DAP(Data Apportion Processing)and DEP(Data Exchange Processing).Table deletion strategy includes global deletion mechanism and node deletion mechanism.The results indicate that in parallel strategies,single TP and single PLP parallel algorithms can show better computational accuracy compared with other combined algorithms between TP(PLP)strategy and DAP(DEP)strategy,and that single TP algorithm show the best computational efficiency among all of algorithms.The results also show that the computational accuracy of the algorithm is independent on the numbers of computational zone,but the computational efficiency of the algorithm can be significantly improved as the number of computational zone decreases.For different deletion mechanisms,the algorithm with the overall deletion mechanism shows better computational accuracy and computational efficiency than the algorithm with the node deletion mechanism.