Obiekt

Alternative title:

Wybrane aspekty badania wymiany ciepła w lufie działa przeciwlotniczego

Contributor:

Piotr KONIORCZYK, Zbigniew SURMA, Marek PREISKORN, Judyta SIENKIEWICZ

Abstract:

The paper presents the results of computer simulations of the transient heat flow in the barrel wall of a 35 mm caliber cannon for a single shot and a sequence of seven shots for a selected 30HN2MFA barrel steel. It was assumed that the inner surface of the barrel does not have a protective layer of chromium or nitride. When calculating heat transfer in a barrel, constant and temperature variable values of thermal conductivity, specific heat and density (in the range from RT (Room Temperature) up to 1000℃) in the 30HN2MFA steel were assumed. The test results were compared for both cases. A barrel with a total length of 3150 mm was divided into 6 zones (i = 1,…, 6) and in each of them, the heat flux density was calculated as a function of the time ��̇��(��) on the inner surface of the barrel. In each zone, the heat transfer coefficient, as a function of the time hi(t) and bore gas temperature as a function of the time Tg(t) to the cannon barrel for given ammunition parameters, was developed. A calculating time equaling 100 ms per single shot was assumed. The results of the calculations were obtained using FEM implemented in COMSOL Multiphysics ver. 5.6 software.

Place of publishing:

Warszawa

Publisher:

Wojskowa Akademia Techniczna

Date created:

2010 r.0

Date submitted:

2022-09-08

Date accepted:

2022-10-11

Date issued:

2023-06-30

Extent:

B5

Identifier:

oai:ribes-88.man.poznan.pl:2674

Call number:

doi:10.5604/01.3001.0053.6672

Electronic ISSN:

2720-5266

Print ISSN:

2081-5891

Language:

angielski

License:

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Rights holder:

Wojskowa Akademia Techniczna

Starting page:

73

Ending page:

86

Volume:

14

Journal:

PROMECH

Keywords:

mechanical engineering, anti-aircraft cannon barrel, heat transfer, numerical simulation, temperature field