0
The thermal Peclet number (Pet) is a measure of the relative importance of advective to conductive heat transport .
Pet = (vl)/k
where 'v' is the velocity at which the material is moving, 'l' a length scale and 'k' (kappa) the thermal diffusivity.
In simpler words,
Pet >>1 implies : advection dominates
Pet <<1 implies : conduction dominates.
[thermal diffusivity : can be thought of thermal inertia, a higher value means rapid movement/flow of heat through substance relative to its volumetric heat capacity or 'thermal bulk' is possible, therefore, when k is large, conduction dominates ]
[advection : transportation of some qty via bulk flow of a fluid medium]
The Peclet number is a dimensionless parameter used in fluid dynamics to characterize the relative importance of advection and diffusion in a system. It is calculated by dividing the rate of advection by the rate of diffusion. A high Peclet number indicates that advection dominates, while a low Peclet number indicates that diffusion dominates.
Add your answer:
Earn +20 pts
What does magnetism measures?
In simple terms: The strength (or influence) of the magnet at the point measured.
How is atomic number differ from mass number?
atomic mass is the number of protons in an atom mass number is the number of protons plus neutrons in an atom
What number is earth in terms of size?
earth is 5th number in term of size
How many atoms are in simple cubic?
A simple cubic lattice has one atom at each lattice point, so the number of atoms in a simple cubic lattice is equal to the number of lattice points. Each lattice point is associated with one atom, so the number of atoms in a simple cubic lattice is equal to the number of lattice points in the lattice.
What are the ingredients of photosenthesis?
Photosynthesis is the process where plants convert sunlight into energy (in very simple terms). There are not ingredients.
What is critical marangoni number?
The Marangoni Number is a Peclet Number. It is the ratio between the surface forces due to the Marangoni effect and the thermal diffusivity. The Critical Marangoni Number is the value of the Marangoni Number for which the flow symmetry and steadiness are lost.
What two word are used to classify epithelium in terms of the number of cell layers?
simple and stratified
How many people visit whitby?
The real answer is fairly complicated, but in simple terms the number is 17.
Is the square root of 4 an irrational number?
No, an irrational number is, in simple terms, a number that keeps repeating. The square root of 4 is positive or negative 2, which does not repeat and is therefore rational.
Explain in simple terms how you would go about buying something from an e-commerce site?
Give them your pin number and you get whatever you want.
How do you know if the number or the symbol comes first in an inequality?
In simple terms, it doesn't matter. x<6 is the same as 6>x.
What is the sum of terms divided by the number of terms?
Adding together the terms and dividing them by the number of terms gives the arithmetic mean.
What is 10 percent of 82?
To find 10 percent of a number, multiply the number by 0.1. In this instance, 0.1 x 82 = 8.2. Therefore, 10 percent of 82 is equal to 8.2. . backward paragraph or in simple terms; move the decimal point one place to the left. or in simple terms move the decimal point one place to the left. .
What is the definition of common difference in simple terms?
weena
How are the terms simple and complex related?
They are exact opposites.
What is column Graph?
In simple terms a bar graph.
do you know what a space is?
In simple terms space is a volume. In complex terms is it is what Einstein called "space time".
