Theoretical and Computational Analysis on Blunt Shaped Reentry Capsule
Chaithanya.T1, Bachu Anusha2, Manikandan.S3
1Ms.T.Chaithanya, UG Final Year Student, Department of Aeronautical Engineering, Jeppiaar Engineering College, Chennai, India,
2Ms.Bachu Anusha, UG Final Year Student, Department of Aeronautical Engineering, Jeppiaar Engineering College, Chennai, India.
3Mr.S.Manikandan, Assistant Professor, Department of Aeronautical Engineering, Jeppiaar Engineering College, Chennai, India.
Manuscript received on March 05, 2014. | Revised Manuscript Received on March 14, 2014. | Manuscript published on March 20, 2014. | PP: 24-27 | Volume-2, Issue-4, March 2014. | Retrieval Number: D0443032414/2014©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering & Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: For high aerodynamic drag and safe returning of capsule on the earth, to protect astronaut from radiation, the blunt shape reentry capsule is required. The flow fields over the blunt shaped reentry capsule are numerically obtained by the steady state, axisymmetric, compressible Navier–Stokes k-Ԑ turbulence model for free stream mach numbers are in the range of 2 and 4. Employing a finite volume approach which reduces the governing equations to semi-discretized ordinary differential equations. The numerical simulation is carried out on a structural grid. The flow field features around reentry capsule, such as bow shock, sonic line, expansion are obtained. A good agreement is found between the computationally calculated value of aerodynamic drag co-efficient blunt shape reentry capsule with the theoretical value. The effects of geometrical parameters, blunt shapes have been numerically investigated for various reentry configurations which will be useful for forming the strong shock wave in supersonic flow, as a result there is a increases in aerodynamic drag during landing of the vehicle.
Keywords: blunt , reentry capsule, supersonic flows, drag.