UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS

AKÇAY, Mehmet; YÜKSELEN, M. Adil

UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS

Mehmet AKÇAY, (Kara Harp Okulu Savunma Enstitüsü, Ankara, Türkiye)

M. Adil YÜKSELEN (İstanbul Teknik Üniversitesi, Havacılık ve Uzay Bilimleri Fakültesi, İstanbul, Türkiye)

Isı Bilimi ve Tekniği Dergisi

7 0

Yıl: 2014 Cilt: 34 Sayı: 2 Sayfa Aralığı: 75 - 81 Metin Dili: İngilizce İndeks Tarihi: 29-07-2022

UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS

Öz:

In this study, unsteady heat transfer problem has been solved to calculate the temperature distribution of amachine gun barrel. Time dependent convective heat transfer coefficient to predict the entire wall temperature of thebarrel wall has been calculated by means of internal ballistic theory. The numerical solution of the differentialequation was carried out by means of finite difference method. Thermal characteristics of the gun barrel material areconsidered to be temperature dependent. The study is extended also to cover the multi shot ballistic cycle, such that itwould be possible to obtain the cook-off temperature of the gun. The numerical results are compared with theexperimental results found in literature. The agreement between them is quite satisfactory.

Anahtar Kelime:

Konular: Termodinamik

NAMLU MALZEMESİ ISIL KARAKTERİSTİKLERİ HOMOJEN OLMAYAN SİLAH NAMLULARININ İÇ BALİSTİK ÇEVRİM SIRASINDA ZAMANA BAĞLI ISIL İNCELENMESİ

Öz:

Bu çalışmada bir makineli tüfek namlusunun sıcaklık dağılımını hesaplamak için zamana bağlı ısı transferi problemi çözülmüştür. Namlunun tüm et kalınlığı sıcaklığını tahmin etmek için zamana bağlı taşınımsal ısı transferi katsayısı iç balistik teorisi yardımıyla hesaplanmıştır. Diferansiyel denklemin nümerik çözümü sonlu farklar yöntemiyle yürütülmüştür. Tüfek namlu malzemesinin ısıl karakteristikleri sıcaklığa bağlı olarak dikkate alınmıştır. Çalışma, seri atışlı balistik çevrimi de kapsayacak biçimde genişletilmiş olup böylece tüfeğin kendi kendine ateşleme (cook-of) sıcaklığını hesaplamak mümkün olmaktadır. Nümerik sonuçlar literatürdeki deneysel sonuçlarla karşılaştırılmıştır. Her ikisi arasındaki uyum gayet tatminkardır.

Anahtar Kelime:

Konular: Termodinamik

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

Akçay M., 1992, The solution of Res'al equation for multi perforated propellants, J. İTÜ, 50 (3), (in Turkish).
Blecker J. N., 1974, Small arms gun barrel thermal experimental correlation studies, GEN Thomas J. Rodman Laboratory, R-TR-74-034, Rock Island, Illinois.
Chen T. C., and Liu C. C., 2008, Inverse estimation of time-varied heat flux and temperature on 2-D gun barrel using input estimation method with finite-element scheme, Defense Sci. J. 58 (1), 57-76.
Conroy P. J., Weinacht P., Nusca M. J., and Rice K., 2001, Extended-range 5-in Navy gun: Theoretical thermal and erosion investigations, Army Research Laboratory, ARL-TR-2473.
Değirmenci E., and Dirikolu H. M., 2012, A thermochemical approach for the determination of convection heat transfer coefficient in a gun barrel, Appl. Thermal Eng. 37, 275-279.
Elbe R. E., 1975, External barrel temperature of the M16A1 Rifle, GEN Thomas J. Rodman Laboratory, R- TR-75-045.
Hoffmann K. A., and Chiang S. T., 1989, Computational Fluid Dynamics for Engineers, Engineering Education System, Austin, Texas.
Huang X., Conroy P., and Carter R., 2007, 5.56 mm ceramic gun barrel thermal analyses with cycled ammunition, Proc. of 23rd International Symposium on Ballistics, Tarragona, Spain, 303-311.
Kolkert W. J., Waas M., and The H. G., 1986, On the thermal behavior of the barrel during the interior ballistic cycle of propellant guns, in: Interior ballistic of guns, AGARD CP 392, Paper 13.
Mishra A., Hameed A., and Lawton B., 2010, A novel scheme for computing gun barrel temperature history and its experimental validation, J. Pres. Vessel Technol., 132, 1-6.
Moeller C. E., and Bossert A. J., 1973, Measurement of transient bore-surface temperature in 7.62 mm gun tubes, Midwest Research Institute, R-RR-T-1-81-73.
Moxnes J. F., 2002, A model of internal ballistic properties in gun tubes, FFI/RAPPORT-2002/02385.
Shaliyev R., Akyol U., and Çelen S., 2006, Numerical solution of inverse heat transfer problem, Trakya Univ. J. Sci. 7 (1), 1-8.
Shelton S., Bergles A., and Saha P., 1973, Study of heat transfer and erosion in gun barrels, Air Force Laboratory, AFTL-TR-73-69.
Wu B., Chen G., and Xia W., 2008, Heat transfer in a 155 mm compound gun barrel with full length integral midwall cooling channels, Appl. Thermal Eng. 28, 881-888.
Yuhas D. E., Mutton M. J., Remiasz J. R., and Vorres C. L., 2009, Ultrasonic measurements of bore temperature in large caliber guns, AIP Conf. Proc. 1096, 1759; doi: 10.1063/1.3114171
Mehmet AKÇAY graduated from Faculty of Mechanical Engineering at İstanbul Technical University in 1973. He

APA	AKÇAY M, YÜKSELEN M (2014). UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. , 75 - 81.
Chicago	AKÇAY Mehmet,YÜKSELEN M. Adil UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. (2014): 75 - 81.
MLA	AKÇAY Mehmet,YÜKSELEN M. Adil UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. , 2014, ss.75 - 81.
AMA	AKÇAY M,YÜKSELEN M UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. . 2014; 75 - 81.
Vancouver	AKÇAY M,YÜKSELEN M UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. . 2014; 75 - 81.
IEEE	AKÇAY M,YÜKSELEN M "UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS." , ss.75 - 81, 2014.
ISNAD	AKÇAY, Mehmet - YÜKSELEN, M. Adil. "UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS". (2014), 75-81.

APA	AKÇAY M, YÜKSELEN M (2014). UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. Isı Bilimi ve Tekniği Dergisi, 34(2), 75 - 81.
Chicago	AKÇAY Mehmet,YÜKSELEN M. Adil UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. Isı Bilimi ve Tekniği Dergisi 34, no.2 (2014): 75 - 81.
MLA	AKÇAY Mehmet,YÜKSELEN M. Adil UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. Isı Bilimi ve Tekniği Dergisi, vol.34, no.2, 2014, ss.75 - 81.
AMA	AKÇAY M,YÜKSELEN M UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. Isı Bilimi ve Tekniği Dergisi. 2014; 34(2): 75 - 81.
Vancouver	AKÇAY M,YÜKSELEN M UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS. Isı Bilimi ve Tekniği Dergisi. 2014; 34(2): 75 - 81.
IEEE	AKÇAY M,YÜKSELEN M "UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS." Isı Bilimi ve Tekniği Dergisi, 34, ss.75 - 81, 2014.
ISNAD	AKÇAY, Mehmet - YÜKSELEN, M. Adil. "UNSTEADY THERMAL STUDIES OF GUN BARRELS DURING THE INTERIOR BALLISTIC CYCLE WITH NON-HOMOGENOUS GUN BARREL MATERIAL THERMAL CHARACTERISTICS". Isı Bilimi ve Tekniği Dergisi 34/2 (2014), 75-81.