This article reports the numerical study of natural convection in a differentially heated cylindrical annular enclosure with a thin baffle attached to inner wall. The inner and outer walls of the annulus are respectively maintained at higher and lower temperatures. whereas the top and bottom walls are thermally insulated. Using an implicit finite difference technique. https://www.roneverhart.com/Black-flower-Reversable-Tote-Bag-E05728-FRS-RB0/