What does the diffusion flux j describe?

What does the diffusion flux j describe?

J is the diffusion flux, of which the dimension is amount of substance per unit area per unit time. J measures the amount of substance that will flow through a unit area during a unit time interval.

What is flux in mass transfer?

Flux = rate of mass transfer per unit surface area normal to the direction of transport; units are mol/cm2-s or gm/cm2-s.

What is convective flux?

Convective heat flux is a flux depending on the temperature difference between the body and the adjacent fluid (liquid or gas) and is triggered by the *FILM card.

How is the pascal unit named after Blaise Pascal?

The Pascal abbreviated as Pa refers to as the SI unit (International System of Units) of Pressure. Furthermore, pressure, in science, is defined as the force acting per unit area. The unit of Pressure has been named after Blaise Pascal. Blaise Pascal was a French mathematician and philosopher.

How is the pressure of a pascal unit defined?

One Pascal (Pa) is defined as the pressure imparted by a Force of one Newton perpendicularly on the area of one square meter. Mathematically, one can derive the expression as follows, Pressure P = Force F acting perpendicularly per unit area (where N is Newton, m is the meter, kg is the kilogram, s is the second, and J is the Joule).

What did Blaise Pascal do for a living?

Blaise (blɛz). 1623–62, French philosopher, mathematician, and physicist. As a scientist, he made important contributions to hydraulics and the study of atmospheric pressure and, with Fermat, developed the theory of probability.

How are Pascal units used in material science?

Geophysicists around the world use the higher units of pascals like the Gigapascal (GPa), for measuring the tectonic stresses or calculating pressure within the Earth. In the material science and engineering department, the pascal measures the tension (or the tensile strength), stiffness and compressive strength of materials.