Tham khảo tài liệu 'a development of novel integral method for prediction of distorted inlet flow propagation_2', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Results and Discussion 87 Inlet Distorted Velocity Coefficient According to the Chap. 1 the inlet distorted velocity coefficient and incident angle are the essential parameters affecting the inlet distortion propagation. Firstly the effect of variation in inlet distorted velocity coefficient a 0 is analyzed here to show what role does it play in the current novel integral method. To facilitate in discussion of distortion quantitatively a distortion level is defined as r x 1 - Oo x The smaller a 0 means higher inlet distortion level. It is obvious that the definition of distortion level in representing the relative distortion is more intuitive than using the distorted velocity coefficient. For example the case with a0 0 and a 0 the distortion level at inlet is r 0 . This is a severe distortion case with a high initial distortion level. While a 0 will result in a r 0 and hence zero distortion. Figure shows that the previous work in Chap. 1 is in good agreement with that of Kim et al. 6 which indicates that the propagation of inlet distortion with a bigger inlet distortion level will grow and vice-versa. However the results using the present novel integral method suggest a different conclusion. From Fig. the novel method provides a more serious propagation of inlet distortion. On the B D - _ n E 1Í 9 a 0 a 0 a 0 a 0 a 0 a 0 et al. et al. 0O 15 o Fig. . A comparison of distorted flow propagation between the results of Ng et al. 11 and that of Kim et al. 6 88 Chapter 4 A Development of Novel Integral Method - 9 0 15 0 2 4 6 8 10 Fig. . The inlet distortion propagates along axial direction with different inlet distortion level a no distortion a o a Current a 7 a a a . Ng et al. 4 a other hand unlike the cases in Fig. the present results indicate that for any inlet distortion level .
