This　work　investigates　the　airflow　driven　by　dual　axial-flow　fans　in　an　atmospheric　boundary　layer　(ABL)　wind　tunnel　and　the　expected　entrainment　of　sand　movement　together.　The　present　study　is　conducted　via　3D　numerical　simulation　based　on　modelling　the　entire　wind　tunnel,　including　the　power　fan　sections.　Three　configurations　of　dual　fans　in　the　tunnel　are　proposed.　Simulation　results　show　that　the　airflow　in　the　tunnel　with　dual-fan　configuration　can　satisfy　the　logarithmic　distribution　law　for　ABL　flows.　The　airflow　driven　by　the　dual　fans　placed　together　at　the　tunnel　outlet　is　highly　similar　to　that　in　the　tunnel　with　single　fans.　Although　the　boundary　layer　thickness　is　reduced,　the　maximum　airflow　velocity　(53.393　m/s)　and　turbulence　intensity　(12.02%),　which　are　respectively　1.75　and　1.49　times　higher　than　those　under　the　single-fan　configuration,　can　be　reached　when　dual　fans　are　separately　placed　at　the　tunnel　inlet　and　outlet.　The　simulation　and　experiment　manifest　that　the　separated　arrangement　of　dual　fans　in　the　tunnel　should　be　suitable　for　the　experimental　study　of　aeolian　sand　transport.　Some　measures,　such　as　wind　tunnel　construction　adjustment　and　optimal　roughness　element　arrangement,　are　necessary　to　guarantee　the　required　boundary　layer　thickness　in　the　wind　tunnel.