Theoretical And Experimental Study On Heat Transfer Behaviour
In Gun Tubes Using Aerosil Additive For Surface Erosion Protection
Author(s)
F. Seiler, H. Peter, G. Mathieu, G. Zettler
Abstract
Theoretical and experimental study on heat
transfer behaviour in gun tubes using aerosil
additive for surface erosion protection
F. Seller, H. Peter, G. Mathieu, G. Zettler
French-German Research Institute of Saint-Louis (ISL),
Saint-Louis, France
Abstract
The action of additive particles on reducing heat transfer from the hot,
compressed propellant gas flow into the barrel of a powder gun has been
investigated by both theoretical considerations and experiments performed
at the 20 mm calibre erosion gun of ISL. For this purpose a boundary layer
model was developed and its theoretical results were compared with bore
temperature measurements carried out at two measuring stations which are
placed near the forcing cone inside the gun tube. For theoretical description,
Prandtl's boundary layer equations were applied to solve the unsteady,
compressible and turbulent boundary layer development for determination
of the heat flux q(x) from propellant gas to barrel wall. A solution of the
Keywords
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