The Hartmann number (Ha) is the ratio of electromagnetic force to the viscous force, first introduced by Julius Hartmann (1881 – 1951) of Denmark. [1] [2] It is frequently encountered in fluid flows through magnetic fields. [3] It is defined by:
where
The Hartmann number (Ha) is the ratio of electromagnetic force to the viscous force, first introduced by Julius Hartmann (1881 – 1951) of Denmark. [1] [2] It is frequently encountered in fluid flows through magnetic fields. [3] It is defined by:
where