Comparison of cosmological simulations and deep submillimetre galaxy
  surveys
  Recent progress in submillimetre surveys by single-dish telescopes allows us
to further challenge the consistency between cosmological simulations and
observations. In particular, we compare our simulations that include dust
formation and destruction with the recent SCUBA-2 surveys (`STUDIES') by
putting emphases on basic observational properties of dust emission such as
dust temperature, size of infrared (IR)-emitting region, IR luminosity function
and IRX--$\beta$ relation. After confirming that our models reproduce the local
galaxy properties, we examine the STUDIES sample at $z\approx 1-4$, finding
that the simulation reproduces the aforementioned quantities except for the
$z\gtrsim 2$ IR luminosity function at the massive end ($\sim 10^{13}$
L$_{\odot}$). This means that the current simulation correctly reproduces the
overall scaling between the size and luminosity (or star formation rate) of
dusty region, but lacks extreme starburst phenomena at $z\gtrsim 2$. We also
discuss extinction curves and possible AGN contribution.
