One of the biggest challenges of the world is to find sufficient energy for the future. Solar energy is the largest and most abundant renewable energy. However, the performance of a solar photovoltaic (PV) panel is significantly reduced because of the dust deposition on its surface. This work is concerned with the numerical investigation of air flow and dust deposition behavior around a ground mounted solar PV panel using computational fluid dynamics (CFD). Moreover, installing vortex generators (VGs) as a passive cleaning method on the PV panels is introduced and analyzed. Simulations are...