The　gas　purging　states　affect　electricity　output　and　energy　storage　capacity　of　unitized　regenerative　fuel　cells.　In　this　study,　a　model　of　unitized　regenerative　fuel　cell　is　established.　Cell　voltages　and　operating　temperatures　influences　on　the　dynamic　distribution　of　thermal　fluid　during　purging　process　and　the　discharge　of　residual　liquid　water　in　electrolytic　cell　mode　are　investigated.　The　motivation　of　the　present　study　is　better　understanding　the　gas　purging　characteristics　and　its　effect　on　reaction　behaviors　of　unitized　regenerative　fuel　cells.　Simulation　results　reveal　a　significant　influence　of　purging　gas　temperature　on　the　water　flooding　and　a　great　effect　of　operating　voltage　on　the　water　diffusion.　The　operating　temperature　of　electrolytic　cell　model　almost　has　little　effect　on　purging　results　at　different　cell　temperature　and　the　same　purging　gas　temperature.　When　the　purging　gas　temperature　is　changed,　higher　temperatures　of　cell　and　purging　gas　facilitate　liquid　water　discharging　out　from　the　cell　regions.　In　cell　water　flooding　situation,　when　having　large　liquid　content,　the　purging　gas　has　little　effects　on　the　water　expelling　process.　(c)　2022　Hydrogen　Energy　Publications　LLC.　Published　by　Elsevier　Ltd.　All　rights　reserved.