In　this　article,　the　heat　and　mass　transfer　mechanism　of　micropolar　nanofluid　embedded　with　Buoyancy　force　and　magnetic　field　across　an　enclosure　has　been　analyzed.　Mass,　energy,　and　momentum　equations　are　required　to　construct　the　mathematical　model　to　evaluate　the　efficacy　of　thermal　performance　of　nanoparticles.The　motivation　for　this　study　is　to　improve　heat　and　mass　transfer　efficiency　in　heat　transfer　equipment　and　heat　recovery　units　in　industrial　and　engineering　processes.　Given　the　signification　of　dimensional　analysis,　2D　model　is　set　up　in　their　dimensionless　context.　In　addition,　the　finite　volume　approach　(FVM)　is　employed　for　numerical　simulations.　The　thermophoresis　and　Brownian　motion　parameters　has　been　considered　for　the　temperature　field,　as　proven　via　simulation.　As　a　result　of　the　random　mobility　of　nanoparticles,　more　heat　is　emitted　inside　the　enclosure.　Furthermore,　mass　diffusivity　and　Schmidt　number　are　inversely　related,so　that　mass　diffusion　inside　the　cavity　is　faster　for　small　values　of　Schmidt　number.　Additionally,　it　is　discovered　that　a　high　vortex　viscosity　parameter　produces　a　weak　concentration　field　and　has　significant　behavior　when　thermophoresis　parameter　and　Reynolds　number　are　significant.　The　simulations　are　captured　in　graphical　form,　and　their　results　are　explained　in　detail.