Theturbulentkineticenergy(TKE)balanceinthewakeofaself-propelledbodyisafundamentaltopicinfluiddynamics,particularlyrelevanttounderstandingthecomplexflowstructuresandenergydissipationmechanismsbehindmovingobjectssuchasunderwatervehicles,aircraft,ormarineanimals.Thisbalanceinvolvestheinterplaybetweenproduction,dissipation,transport,andconvectionofTKEwithinthewakeregion.StudyingtheTKEbalanceprovidesinsightsintothewake'sself-sustainingturbulence,itsdecaycharacteristics,andtheoverallenergyefficiencyoftheself-propelledsystem.Researchersoftenemployexperimentalmeasurements,numericalsimulations,ortheoreticalmodelstoanalyzethesedynamics,whicharecrucialforoptimizingpropulsionsystems,reducingdrag,andimprovingtheperformanceofautonomousorbio-inspiredvehicles.