Abstract
To sustain the arc in the arcjet, the swirl is thought to be necessary. This paper conducts a numerical study on various geometry and input conditions. The effect of swirl and wall temperature of a nozzle on the plasma flow, arc behavior, and performance parameter of low power arcjet has been studied. The physics behind the working of low power arcjet and behavior of swirl velocity has been plotted. Various aspect of swirl, which stabilizes the arc, is also discussed.
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Abbreviations
- A exit :
-
Exit area of the nozzle
- B :
-
Magnetic induction vector
- \(\bar{C}\) :
-
Mean velocity
- B θ :
-
Azimuthal component of magnetic induction vector
- F :
-
Thrust
- I :
-
Electric current
- I sp :
-
Specific impulse
- J :
-
Current density vector
- P exit :
-
Pressure at exit of the nozzle
- \(Q_{\text{ij}}\) :
-
Collision cross section for i, j species encounter
- R gas :
-
Characteristic gas constant
- U exit :
-
Velocity of gas at exit of the nozzle
- T :
-
Gas Temperature
- V :
-
Velocity vector
- a:
-
Velocity of sound
- e t :
-
Total energy
- h :
-
Plank’s constant
- h t :
-
Total Enthalpy
- j r, :
-
Radial current density vector
- j z :
-
Axial current density vector
- k :
-
Thermal conductivity
- k Boltz :
-
Boltzmann constant
- \(\dot{m}\) :
-
Mass flow rate
- m e :
-
Mass of electron
- n e , n n :
-
Number density of electrons and neutral atoms
- \(\dot{n}_{e}\) :
-
Production rate of electron
- n n :
-
Number density of neutral atoms
- p :
-
Pressure
- v r :
-
Radial velocity
- v z :
-
Axial velocity
- v θ :
-
Azimuthal velocity
- y e :
-
Mass fraction of electron
- r, z, θ :
-
Radial, axial, and azimuthal coordinates
- ρ :
-
Density
- \(\overline{\overline{\tau }}\) :
-
Viscous stresses
- σ :
-
Electrical conductivity
- α:
-
Degree of ionization
- μ :
-
Coefficient of viscosity
- μ 0 :
-
Magnetic permeability of free space
- ϵ 0 :
-
Permittivity of free space
- ε i :
-
Ionization energy
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Akhare, D., Nandyala, H.P., Kumar, A., Jayachandran, T. (2021). Effect of Swirl and Wall Heat Transfer on the Performance of Arcjet Thrusters Using Numerical Modeling. In: Mistry, C., Kumar, S., Raghunandan, B., Sivaramakrishna, G. (eds) Proceedings of the National Aerospace Propulsion Conference . Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-5039-3_26
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DOI: https://doi.org/10.1007/978-981-15-5039-3_26
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