Have you tried a search, and see to where that leads.goggles31 said:There are characteristic lengths for Reynold's, Grashof, Nusselt, and Biot number but the method of obtaining them is not given in my notes. I would like to know how to do so for a plane wall, cylinder and sphere. Thank you.
Characteristic length is a parameter used in various scientific and engineering fields to describe the size or scale of a system. It is typically a measure of the average distance or size of the system in relation to its overall dimensions.
The determination of characteristic length depends on the specific system or phenomenon being studied. In general, it involves analyzing the geometry, size, and other relevant factors of the system and using mathematical equations or experimental techniques to calculate or measure the characteristic length.
Characteristic length is an important parameter because it helps scientists and engineers to understand and describe the behavior of a system. It can also be used in the development and testing of mathematical models and simulations, as well as in the design and optimization of various structures and processes.
Yes, characteristic length can change depending on the conditions of the system or the specific aspect being studied. For example, in fluid dynamics, characteristic length may change with variations in flow rate or density. It is important to carefully consider the conditions and assumptions when determining characteristic length.
Characteristic length can be found in various systems and phenomena, such as the length of a pendulum in oscillation, the diameter of a pipe in fluid flow, or the wavelength of an electromagnetic wave. It can also be used to describe the size of objects, such as the wingspan of an airplane or the diameter of a blood vessel.