Fig.1

Schematic diagram of physical model

Fig.2

Computing domain and grid

Table 1

Boundary conditions［26］

Fig.3

Verification model and calculation domain grid

Table 2

Conditions of free incoming flow and wall temperature［35］

Fig.4

Comparison of wall heat flow distribution between calculations and experiment［36］

Table 3

Grid parameters

Fig.5

Wall pressure distribution of different grids

Fig.6

Heat flux values along wall of different grids

Fig.7

Pressure fraction of rectangular pulse jet with time

Fig.8

Convergence residual diagram of simulation process

Fig.9

Temperature cloud maps with different injection pressure ratios

Fig.10

Time history of drag coefficient with different jet pressure ratios

Fig.11

Time history of shock detachment distance at different injection pressure ratios

Fig.12

Variation law of drag coefficient ratio with amplitude of rectangular pulsed jet

Fig.13

Time histories of drag coefficients of steady jet and pulsed jet at different amplitudes

Fig.14

Variation law of total wall heat flow ratio with amplitude of pulsed jet

Table 4

Comparison of drag coefficients and heat flux of different amplitudes under rectangular pulsed jet

Fig.15

Variation law of drag coefficient ratio with frequency of rectangular pulse jet

Fig.16

Time histories of drag coefficients of steady jet and pulsed jet at different frequencies

Table 5

Dominant frequencies of drag coefficients at different rectangular pulse jet frequencies

Fig.17

Variation law of total wall heat flow ratio with frequency of pulsed jet

Fig.18

Dimensionless shock distance and drag coefficient of blunt body surface under action of rectangular pulsed jet

Fig.19

Periodic pressure cloud image under action of rectangular pulse jet