Symbol in context

$\dot{m}$

This entry links every published equation using this exact notation. Its meaning may change between equations.

Meanings in context

Article-grounded definition

the coolant mass flow rate.

Editorial equation guide

How many kilograms of cooling fluid pass through the loop each second. Its SI unit is kilograms per second.

Article-grounded definition

the mass flow.

\dot{Q} = \dot{m}\, c_p\, \Delta T

This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.

\dot{m}

the coolant mass flow rate.

\dot{m}

the coolant mass flow rate.

\dot{Q} = \dot{m} c_p \Delta T

This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.

\dot{Q} = \dot{m}\,c_p\,\Delta T = \rho\,\dot{V}\,c_p\,\Delta T,

Cooling power equals fluid mass flow × specific heat capacity × temperature rise. Density converts volume flow into mass flow.

\dot{m}

the mass flow.