Four types of undulated cylinders with streamwise undulation. transverse undulation. in-phase undulation and antiphase undulation are employed to investigate the undulation-axis effect on the structure of heat transfer around wavy cylinders. The flows around these undulated cylinders are numerically simulated by large eddy simulation at Re = 3000. https://countryscenesaddleryandpetsuppliers.shop/product-category/floor-mats/