It seems you are looking for the solution manual for (often the classic text "Conduction Heat Transfer" by Sadık Kakaç and Yaman Yener, or Arpaci's own book). The file you mentioned is conduction heat transfer arpaci solution manual.zip .
Would you like help solving a specific problem from Arpaci's book instead? If you share the problem statement, I can guide you through the analytical steps. conduction heat transfer arpaci solution manual.zip