  We present a three-dimensional model of polarised galactic dust emission that
takes into account the variation of the dust density, spectral index and
temperature along the line of sight, and contains randomly generated small
scale polarisation fluctuations. The model is constrained to match observed
dust emission on large scales, and match on smaller scales extrapolations of
observed intensity and polarisation power spectra. This model can be used to
investigate the impact of plausible complexity of the polarised dust foreground
emission on the analysis and interpretation of future CMB polarisation
observations.
