This study employs computational fluid dynamics (CFD) to investigate the phenomenon of barrel distortion induced by solar heating. The focus is on analyzing non-uniform heating effects on the outer walls of barrel. The process involves applying a heat flux to the outer surface of the barrel over a fixed period of time to emulate solar radiation. The CFD model incorporates detailed geometry, mesh, and boundary conditions accounting for heat transfer within the barrel material and to the surrounding fluid flow. Simulation captures thermal interaction between the fluid and solid components which is crucial for accurate heat distribution predictions. Solar load model is implemented in order to simulate realistic solar heating scenarios which involves position of sun with respect to barrel. This study contributes to understanding behavior of barrels under solar heating and structural deformations induced by non-uniform thermal loads which will further help in design of thermal sleeves for barrels.