534
S. Balasubramanian et al.
Fig. 8 Surface Cp palette over the spherically blunt cone flare configuration
Fig. 9 Cp distribution along the surface meridian of the configuration at ‘0’ AOA
stagnation Cp occurs at M = 0.3 and higher stagnation Cp occurs at M = 5. Figure 9
shows a variation of Cp along the surface from Fluent as well as CFD++. From
the figure, we can observe that subsonic and transonic Mach numbers result from
both software match well, whereas there is a slight mismatch in the stagnation Cp at
supersonic and hypersonic Mach numbers. The Cp data estimated using CFD++ at
M = 5 matches with data available in [4], whereas the Fluent result is higher. It is
observed that the Cp is decreasing from the nose and there is an increase in the Cp
value near cap-cone and cone flare junction for subsonic and transonic Mach number,
in supersonic and hypersonic Mach numbers Cp jump is seen at cone flare-junction
only.
In subsonic and transonic Cp is reducing after the slight increase in the flare region,
whereas Cp remains constant over flare region at higher Mach numbers. Figure 10
shows the cumulative drag coefficient for typical Mach numbers for the spherically
blunt cone flare configuration. It is observed cumulative drag coefficient is increasing
S. Balasubramanian et al.
Fig. 8 Surface Cp palette over the spherically blunt cone flare configuration
Fig. 9 Cp distribution along the surface meridian of the configuration at ‘0’ AOA
stagnation Cp occurs at M = 0.3 and higher stagnation Cp occurs at M = 5. Figure 9
shows a variation of Cp along the surface from Fluent as well as CFD++. From
the figure, we can observe that subsonic and transonic Mach numbers result from
both software match well, whereas there is a slight mismatch in the stagnation Cp at
supersonic and hypersonic Mach numbers. The Cp data estimated using CFD++ at
M = 5 matches with data available in [4], whereas the Fluent result is higher. It is
observed that the Cp is decreasing from the nose and there is an increase in the Cp
value near cap-cone and cone flare junction for subsonic and transonic Mach number,
in supersonic and hypersonic Mach numbers Cp jump is seen at cone flare-junction
only.
In subsonic and transonic Cp is reducing after the slight increase in the flare region,
whereas Cp remains constant over flare region at higher Mach numbers. Figure 10
shows the cumulative drag coefficient for typical Mach numbers for the spherically
blunt cone flare configuration. It is observed cumulative drag coefficient is increasing