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Vortex Unit Conventions

Vortex Unit Conventions

Feb 21, 2023

Vortex® supports the SI system (International System of Units) also known as the MKS (metre, kilogram, second) system.

Some physical quantities typically used for rigid-body dynamics are shown in the table below:

Physical Quantity

Unit

Symbol

Physical Quantity

Unit

Symbol

Length

Meter

m

Mass

Kilogram

kg

Time

Second

sec

Angle

Radian

rd

Linear Speed

Meter per Second

m/sec

Linear Acceleration

Meter per Second2

m/sec2

Angular Speed

Radian per Second

rd/sec

Angular Acceleration

Radian per Second2

rd/sec2

Force

Newton

N

Energy

Joule

J

Work

Joule

J

Power

Watt

W

Torque (moment of force)

Newton Meter

N⋅m

Moment of Inertia

Kilogram Meter2

kg⋅m2

Spring Constant

Newton per Meter

N/m

Spring Damping

Mass per Second

kg/sec

Kinetic Loss

Second per Mass

sec/kg



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