Abstract. The MECCAD code has been developed within Giat Industries to
predict the heating and the cooling of a gun barrel
during a burst. When the projectile moves in the barrel
we calculate the convective parietal heat flux by using the
Reynolds-Colburn analogy. After the projectile exit, the discharge of the
propellant gas in the barrel is modelled with enough accuracy
to respect the physics of the phenomena. The main difficulty
is to predict the inner flow when the muzzle conditions
are subsonic. The results allowed determination of the parameters of
the expansion laws, which were used as the inputs of
the cooling convective and radiative heat exchange laws. Thus, it
is possible to calculate the initial barrel temperature just before
a new firing. 120-mm gun calculations with MECCAD code were
carried out for one shot with Armour Piercing Fin Stabilized
Discarding Sabot (APFS-DS). The comparison with parietal temperature measurements shows
a good agreement (especially near the forcing cone).
Related topics:
, firepower and protection
View first page of "Boisson: Numerical Study of the Heat Exchanges Occurring in a 120-Mm Chromium-Coated Gun Barrel and Comparison with Experimental Results"
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