TY - JOUR TI - Determination of temperature distribution for annular fins with temperature dependent thermal conductivity by HPM AU - Ganji Davood Domairry AU - Ganji Zaman Ziabkhsh AU - Ganji Hosain Domiri JN - Thermal Science PY - 2011 VL - 15 IS - 11 SP - 111 EP - 115 PT - Article AB - In this paper, homotopy perturbation method has been used to evaluate the temperature distribution of annular fin with temperature-dependent thermal conductivity and to determine the temperature distribution within the fin. This method is useful and practical for solving the nonlinear heat transfer equation, which is associated with variable thermal conductivity condition. The homotopy perturbation method provides an approximate analytical solution in the form of an infinite power series. The annular fin heat transfer rate with temperature-dependent thermal conductivity has been obtained as a function of thermo-geometric fin parameter and the thermal conductivity parameter describing the variation of the thermal conductivity