I am doing the thermal analysis of FSW welding. The heat transfer coefficient is applied on the surface, but our SPH part is meshed, how can I apply this coefficient?
After finishing the analysis and drawing the temperature diagram of the particle, it can be seen that the temperature of the particle is fixed at the same maximum temperature and does not cool down because it does not know how to apply the coefficient of heat transfer to the environment.
In cases where the SPH region is not meshed, you can utilize approximate methods to apply the heat transfer coefficient to the surface. One common approach is to replace directly applying the heat transfer coefficient to the surface with using the maximum surface temperature and considering it as a boundary condition for the SPH particles. This method approximately accounts for the heat transfer effect.
By the completion of the analysis and plotting the temperature diagram for the particles, if the temperature of the particles remains constant at the maximum temperature and does not cool down, it may be due to the improper application of the heat transfer coefficient to the environment. To address this issue, you need to find the correct method for applying the heat transfer coefficient to the SPH particle surface and properly incorporate this coefficient into your analysis. This may involve defining appropriate boundary conditions and employing approximate methods for heat transfer in SPH. It is advisable to consult with experts in the field to receive the necessary guidance in this regard.
Thank you for your answer Do you not have a solution to this problem that the temperature of the particles should decrease after welding?