... Fluid dynamics provides us with the capability of understanding the transport of mass, momentum and energy. ... 2 The fundamental fluid dynamics equations The equations of fluid dynamics are best expressed via conservation laws for the conservation of mass, momentum and energy. Fluid Dynamics 1/22 2.1 Conservation of mass n v S i Consider the rate of change of mass within a fixed volume. ... 3.1 The momentum flux in a viscous fluid The starting point for considering viscosity is the momentum flux. ...

... Printed in U.S.A. THE STELLAR DISK THICKNESS OF LOW SURFACE BRIGHTNESS GALAXIES D. Bizyaev 1,2,3 and S. Kajsin 4 Received 2003 October 23; accepted 2004 June 9 ABSTRACT We present surface photometry results for a sample of 11 edge-on galaxies observed with the 6 m telescope at the Special Astrophysical Observatory, Russia. ... We find from a comparison of photometric scales that the stellar disks of LSB galaxies are thinner than those of high surface brightness ( HSB) galaxies. ... UGC 11301 .. ...