  Finite-dimensional, inviscid equations of hydrodynamics, such as the
zero-viscosity, one-dimensional Burgers equation or the three-dimensional
incompressible Euler equation, obtained through a Fourier-Galerkin projection,
thermalise---mediated through structures known as tygers [Ray et al., Phys.
Rev. E 84, 016301 (2011)]---with an energy equipartition. Therefore, numerical
solutions of inviscid partial differential equations, which typically have to
be Galerkin-truncated, show a behaviour at odds with the parent equation. We
now propose, by using the one-dimensional Burgers equation as a testing ground,
a novel numerical recipe, named tyger purging, to arrest the onset of
thermalisation and hence recover the true dissipative solution.
