Porous　particle　flow　is　universal　in　nature　and　industry.　However,　in　previous　numerical　simulations,　porous　particles　have　usually　been　assumed　to　be　solid.　It　is　necessary　to　study　the　flow　and　heat-transfer　characteristics　around　porous　particles　because　they　are　greatly　different　from　those　of　impermeable　particles.　In　this　study,　two-dimensional　steady　flow　and　heat　transfer　around　and　through　a　porous　particle　with　a　constant　temperature　placed　in　a　cold　fluid　were　numerically　investigated.　The　effects　of　the　Reynolds　number　(Re)　and　Darcy　number　(Da)　on　the　flow　and　heat-transfer　characteristics　were　investigated　in　detail.　The　investigated　ranges　of　the　parameters　were　10　≤　Re　≤　40　and　10−6　≤　Da　≤　10−2.　It　is　sophisticated　to　simulate　porous　particles　with　traditional　simulation　methods　because　of　their　complicated　structure.　Therefore,　the　lattice　Boltzmann　method　was　used　to　solve　the　generalized　macroscopic　governing　equations　because　of　its　simplicity.　The　drag　coefficient　decreased　with　increasing　Re　or　Da,　but　the　decrease　was　not　prominent　in　the　range　10−6　≤　Da　≤　10−4.　The　heat-transfer　efficiency　of　the　front　surface　was　much　stronger　than　that　of　the　rear　surface.　The　heat-transfer　efficiency　between　the　particle　and　the　fluid　increased　with　increasing　Re　or　Da.　However,　for　10−6　≤　Da　≤　10−4,　the　increase　was　not　prominent　and　the　heat-transfer　enhancement　ratio　was　slightly　larger　than　one.　Furthermore,　the　effect　of　Da　became　more　prominent　at　larger　Re.　In　addition,　new　correlations　for　the　drag　coefficient　and　surface-averaged　Nusselt　number　were　obtained　based　on　the　simulated　results.　©　2021　Chinese　Society　of　Particuology　and　Institute　of　Process　Engineering,　Chinese　Academy　of　Sciences