Alleviation of cancellation problem of preconditioned Navier-Stokes equations

An approach to alleviate the cancellation problem of preconditioned Navier-Stokes equations is proposed. Adiabatic laminar viscous flows around a circular cylinder are calculated at different Mach numbers. It is shown that a redefinition of total enthalpy to reduce the magnitude of total enthalpy can alleviate the cancellation problem for adiabatic laminar flows at low Mach numbers.