Numerical Computations of Transonic Critical AerodynamicBehavior of a Realistic Artillery Projectile

The determination of aerodynamic coefficients by shell designers is a critical step in the development of any projectile design. Of particular interest is the determination of the aerodynamic coefficients at transonic speeds. It is in this speed regime that the critical aerodynamic behavior occurs a...

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Autor principal:	Ahmed F. M. Kridi
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2009
Materias:	CFD Euler Equation Artillery Projectile MacCormacks technique. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/dbbf2ee1a6ed4006a3a4687959e7c768
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id	oai:doaj.org-article:dbbf2ee1a6ed4006a3a4687959e7c768
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spelling	oai:doaj.org-article:dbbf2ee1a6ed4006a3a4687959e7c7682021-12-02T04:16:48ZNumerical Computations of Transonic Critical AerodynamicBehavior of a Realistic Artillery Projectile1818-1171https://doaj.org/article/dbbf2ee1a6ed4006a3a4687959e7c7682009-01-01T00:00:00Zhttp://www.iasj.net/iasj?func=fulltext&aId=2254https://doaj.org/toc/1818-1171The determination of aerodynamic coefficients by shell designers is a critical step in the development of any projectile design. Of particular interest is the determination of the aerodynamic coefficients at transonic speeds. It is in this speed regime that the critical aerodynamic behavior occurs and a rapid change in the aerodynamic coefficients is observed. Two-dimensional, transonic, flow field computations over projectiles have been made using Euler equations which were used for solution with no special treatment required. In this work a solution algorithm is based on finite difference MacCormacks technique for solving mixed subsonic-supersonic flow problem. Details of the asymmetrically located shock waves on the projectiles have been determined. Computed surface pressures have been compared with experimental data and are found to be in good agreement. The pitching moment coefficient, determined from the computed flow fields, shows the critical aerodynamic behavior observed in free flights.Ahmed F. M. KridiAl-Khwarizmi College of Engineering – University of BaghdadarticleCFDEuler EquationArtillery ProjectileMacCormacks technique.Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 5, Iss 1, Pp 42-52 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	CFD Euler Equation Artillery Projectile MacCormacks technique. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	CFD Euler Equation Artillery Projectile MacCormacks technique. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Ahmed F. M. Kridi Numerical Computations of Transonic Critical AerodynamicBehavior of a Realistic Artillery Projectile
description	The determination of aerodynamic coefficients by shell designers is a critical step in the development of any projectile design. Of particular interest is the determination of the aerodynamic coefficients at transonic speeds. It is in this speed regime that the critical aerodynamic behavior occurs and a rapid change in the aerodynamic coefficients is observed. Two-dimensional, transonic, flow field computations over projectiles have been made using Euler equations which were used for solution with no special treatment required. In this work a solution algorithm is based on finite difference MacCormacks technique for solving mixed subsonic-supersonic flow problem. Details of the asymmetrically located shock waves on the projectiles have been determined. Computed surface pressures have been compared with experimental data and are found to be in good agreement. The pitching moment coefficient, determined from the computed flow fields, shows the critical aerodynamic behavior observed in free flights.
format	article
author	Ahmed F. M. Kridi
author_facet	Ahmed F. M. Kridi
author_sort	Ahmed F. M. Kridi
title	Numerical Computations of Transonic Critical AerodynamicBehavior of a Realistic Artillery Projectile
title_short	Numerical Computations of Transonic Critical AerodynamicBehavior of a Realistic Artillery Projectile
title_full	Numerical Computations of Transonic Critical AerodynamicBehavior of a Realistic Artillery Projectile
title_fullStr	Numerical Computations of Transonic Critical AerodynamicBehavior of a Realistic Artillery Projectile
title_full_unstemmed	Numerical Computations of Transonic Critical AerodynamicBehavior of a Realistic Artillery Projectile
title_sort	numerical computations of transonic critical aerodynamicbehavior of a realistic artillery projectile
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2009
url	https://doaj.org/article/dbbf2ee1a6ed4006a3a4687959e7c768
work_keys_str_mv	AT ahmedfmkridi numericalcomputationsoftransoniccriticalaerodynamicbehaviorofarealisticartilleryprojectile
_version_	1718401339013201920

Numerical Computations of Transonic Critical AerodynamicBehavior of a Realistic Artillery Projectile

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