TY - JOUR TI - Application of differential transformation method for an annular fin with variable thermal conductivity AU - Aksoy İshak Gökhan JN - Thermal Science PY - 2022 VL - 26 IS - 3 SP - 2301 EP - 2310 PT - Article AB - The thermal analysis of the annular fin is performed by applying the differential transformation method. The thermal conductivity of the annular fin has been considered as a function of temperature. The effects of non-dimensional parameters, namely thermal conductivity and thermo-geometric fin parameters on the fin efficiency and temperature distribution are determined. Obtained results from the differential transformation method are also compared with the exact analytical results and the results of the finite difference method in the constant thermal conductivity condition. It has been concluded that the differential transformation method provides accurate results in the solution of non-linear problems.