Why Does Flow Become Supersonic in the Diverging Section of a …
Sep 6, 2007 · Supersonic flow in a diverging section of a nozzle occurs after reaching Mach 1 at the throat, where the flow accelerates due to changes in pressure and density. While a …
Identifying Converging and Diverging Lenses: Explaining with …
Feb 1, 2005 · To determine whether a lens is converging or diverging, analyze the behavior of the principal rays after they pass through the lens. A convex lens will cause rays to converge at a …
How to determine when compressible flow is choked?
Jun 9, 2024 · Adding a diverging section after the throat can allow for a lower pressure ratio while still achieving choked flow, which may seem counterintuitive as it can increase velocity and …
Is there a pressure ratio limit for choked flow through a c-d nozzle ...
Jun 21, 2024 · Choked flow in a converging-diverging nozzle is primarily determined by the stagnation properties before the throat, and the exit pressure influences the Mach number. …
Object 18cm in Front of Lens to Reduce Image by 2.0
Aug 3, 2008 · An object placed 18cm in front of a diverging lens with a focal length of -12cm needs to be repositioned to achieve a reduced image size by a factor of 2.0. Initial calculations …
Supersonic Flow in Diverging Nozzle - Physics Forums
Nov 13, 2011 · To increase velocity after a throat (minimum area) requires a diverging (supersonic) nozzle which allows the fluid's pressure to drop, reducing back pressure and …
Is it possible to have a Mach number greater than 1 at the throat?
Mar 5, 2012 · The discussion centers on whether a Mach number greater than 1 can occur at the throat of a converging-diverging nozzle. Initially, it is asserted that the Mach number at the …
Easy way to remember imaging properties of lens? - Physics Forums
Oct 21, 2005 · To remember the imaging properties of converging and diverging lenses, it's essential to understand the outcomes based on object placement. Diverging lenses …
Optical System with Diverging Lens and Concave Mirror
Jan 25, 2015 · A diverging thin lens and a concave mirror have focal lengths of equal magnitude. An object is placed (3/2)f from the diverging lens and the mirror is placed a distance 3f on the …
Analyzing this 2-lens optical system • Physics Forums
Jul 8, 2024 · Homework Statement I have a two-lens system. Both principal axis coinciding. Separated by a distance 20cm. Both have focal length 15 cm. Will this act as a converging …