The　gas-solid　flow　in　a　cylindrical　spouted　bed　with　a　pair　of　spherical　longitudinal　vortex　generators　(LVGs)　was　numerically　investigated　by　a　two-fluid　model　with　kinetic　theory　for　granular　flow.　Simulations　and　analyses　were　conducted　on　five　types　of　spouted　beds:　a　conventional　spouted　bed　without　disturbance　units　as　well　as　spouted　beds　with　a　pair　of　LVGs　in　which　the　radius　of　spheres　installed　on　the　LVGs　had　four　different　dimensions.　Results　of　the　computational　fluid　dynamics　demonstrate　that　the　fountain　height　decreases　with　larger　radius,　and　the　influence　range　of　the　longitudinal　vortex　increases　with　the　greater　radius,　both　for　the　gas　phase　and　particle　phase.　The　turbulent　kinetic　energy　of　the　gas　phase　along　the　radial　and　axial　directions　in　the　spouted　bed　was　also　promoted　significantly　by　the　longitudinal　vortex　and　increased　with　larger　radius,　which　is　due　to　the　higher　LVG　volume.