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DESCRIPTIONFor non-isothermal
flow problems, viscous heating in the energy equation can either be accounted
or neglected.
By default, viscous
heating is not taken into account.
Viscous heating may
have an important effect on the temperature when shear-rate and/or viscosity
is(are) large.
NOTESFor non-isothermal
flow problems involving a temperature dependence in the momentum equation
(by means of a boyancy term or a temperature dependent viscosity), viscous
heating introduces a coupling between energy and momentum equations.