An arrangement design method for a cooling structure of an EGR cooler and the EGR cooler, the arrangement design method comprises the design of a matrix pipeline arrangement structure and the design of heat dissipation patterns, and the design of the matrix pipeline arrangement structure comprises the steps of calculation of the overall arrangement area and the comprehensive heat exchange area, calculation of the number of needed single pipes, calculation of the inner
diameter D of a shell and determination of the
pipe distance. The design of the heat dissipation patterns comprises the steps of determining the
pattern type and determining the arrangement rule of the inner surface and the outer surface, and the
pattern type is any one of a pit array structure, a wavy pattern structure or a rhombus pattern structure. By the adoption of the design of the pipeline with the square section, the superficial area is larger, the heat exchange efficiency is improved, meanwhile, compared with a traditional fin type cooler, the air side pressure loss is lower, the concave pits are formed in the inner wall of the pipeline, the turbulence degree of fluid is increased, a fluid boundary layer is broken, the
heat transfer effect is improved, the EGR rate of an engine can be effectively increased, and the engine performance is improved. Meanwhile, the
carbon deposition risk of the cooler is reduced to a certain extent, and
continuous operation of the engine is guaranteed.