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Mass Transport in Porous Media With Variable Mass
2012We present a theoretical and numerical study of mass transport in a porous medium saturated with a fluid and characterised by an evolving internal structure. The dynamics of the porous medium and the fluid as well as their reciprocal interactions are described at a coarse scale, so that the fundamental tools of Mixture Theory and Continuum Mechanics ...
GRILLO, ALFIO +5 more
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The Dynamics of Bodies with Variable Masses
Celestial Mechanics, 1984We consider the motion of n bodies inside a nebula and assume that the bodies acquire matter in a continuous way, a situation that may have occured in the early solar system when the planets were formed. The equations describing the motion are non-autonomous since the masses depend explicitly on time.
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Attitude Behavior of a Variable Mass Cylinder
Journal of Applied Mechanics, 1995This paper examines the attitude motion of a cylindrical body with mass loss. It is found that mass variation can have a substantial influence on the behavior of such a system. Specifically, the initial dimensions as well as the manner in which mass loss affects system inertia are found to be key factors in the determination of the characteristics of ...
Eke, F. O., Wang, Song-Min
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1992
In Chapter 5, the term impulse was introduced. In this chapter, we renew our acquaintance with it via some revision of ideas. Perhaps the most rewarding way to think of an impulse is in terms of an external agent that alters momentum. Common such agents are baseball or cricket bats striking, and significantly changing, the momentum of a moving ball ...
Phil Dyke, Roger Whitworth
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In Chapter 5, the term impulse was introduced. In this chapter, we renew our acquaintance with it via some revision of ideas. Perhaps the most rewarding way to think of an impulse is in terms of an external agent that alters momentum. Common such agents are baseball or cricket bats striking, and significantly changing, the momentum of a moving ball ...
Phil Dyke, Roger Whitworth
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Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1980
Abstract Attention is drawn to the need for a dynamics of variable masses, and two examples are given.
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Abstract Attention is drawn to the need for a dynamics of variable masses, and two examples are given.
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Conservation Laws in Systems With Variable Mass
Journal of Applied Mechanics, 1993In this paper, a method for obtaining conservation laws of dynamic systems with variable mass is developed. It is based on Noether’s theorem to the existence of conservation laws and D’Alembert’s variational principle. In the general case, a dynamic system with variable mass is purely nonconservative.
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PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference. Digest of Papers (Cat. No.01CH37251), 2001
Summary form only given, as follows. Liner magnetic implosion experiments usually make use of liners having the shape of right circular cylinder. This paper considers the possibility of using axially symmetric liners of a more complex (concave) shape. As computations show, during concave liner implosion at an appropriate choice of initial curvature (in
A.M. Buyko +6 more
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Summary form only given, as follows. Liner magnetic implosion experiments usually make use of liners having the shape of right circular cylinder. This paper considers the possibility of using axially symmetric liners of a more complex (concave) shape. As computations show, during concave liner implosion at an appropriate choice of initial curvature (in
A.M. Buyko +6 more
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Global Invariants for Variable-Mass Systems
Physical Review Letters, 2006We investigate the effect of mass loss on the invariants of single particle motion in potentials having translational or rotational symmetry. These systems are non-Hamiltonian in the physical momenta, but for non-velocity-dependent potentials can be made formally Hamiltonian by treating the velocities as canonical momenta. Applying Noether's theorem to
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1980
In Newtonian dynamics the mass of each of the particles of a system is considered constant. The variation of the mass of a particle with the velocity is considered in relativistic mechanics and is not involved in the problems considered here.
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In Newtonian dynamics the mass of each of the particles of a system is considered constant. The variation of the mass of a particle with the velocity is considered in relativistic mechanics and is not involved in the problems considered here.
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Redshifts and the hypothesis of variable particle masses
Journal of Computational Methods in Sciences and Engineering, 2013There are ideas in literature which seek to understand particle masses at a more fundamental level [1-3]. Mach's principle has been one of the motivators of such efforts. This talk will highlight a new way of looking at the conventional cosmological redshifts.
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