The effect of roughness on flow in fractures was investigated using lattice Boltzmann method (LBM). Simulations were conducted for both statistically generated hypothetical fractures and a natural dolomite fracture. The effect of increasing roughness on effective hydraulic aperture. Izbash and Forchheimer parameters with increasing Reynolds number (Re) ranging from 0. https://macorners.shop/product-category/mens-cuban-link-chain/