Dissociation effects in hypersonic flow past a circular cone at an angle of attack

  • Girishwar Nath


The analytical solution to the steady, compressible, non-viscous, inviscid hypersonic flow past a circular cone at an angle of incidence, with an attached Shockwave, in the presence of dissociation of air in the shock layer, has been obtained here under the assumption of thermal equilibrium. Expression for the velocity, pressure, temperature, density, velocity of air, Mach number, pressure, drag and lift coefficients have been obtained both in the shocklayer outside the vortical layer and on the surface of the cone inside the vortical layer.


Mach Number Supersonic Flow Lift Coefficient Shock Layer Hypersonic Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


R,θ, ϕ

spherical polar co-ordinates

u, v, w

velocity components






absolute temperature


velocity of sound


semi-vertical angle of the cone


shock wave angle


angle of attack


resultant velocity


free stream velocity


Mach number


free-stream Mach number


maximum speed of air under adiabatic conditions


value ofu on the surface of the cone in the case of zero angle of incidence


constant reference value of the specific entropy


drag coefficient


lift coefficient


axial pressure force coefficient


normal pressure force coefficient


specific enthalpy


specific entropy


ratio of specific heats


molecular weight of air


density ratio in the case of zero angle of incidence (taken as 0 · 1)


defined by equations (19) to (22)

U1..., V1..., R1,..., Q1..., S1..., etc

functions of θ


specific heat at constant volume


1, 2

conditions ahead of the shock and behind it respectively

Bar (-)

condition in the shock layer (in the presence of dissociation) in the case of zero angle of incidence


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Copyright information

© Indian Academy of Sciences 1966

Authors and Affiliations

  • Girishwar Nath
    • 1
  1. 1.Budapest XIVHungary (Europe)

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