Strand7 Software: In Detail: Solvers: Heat Transfer
Strand7 heat solver
Strand7 may be used for the analysis of heat transfer problems. The heat solver in Strand7 supports both linear and nonlinear modes of heat transfer, with either steadystate of transient heat transfer.  
Steady state heat solver  
The steady state heat solver is used to calculate the temperature distribution in a structure in the steady state or equilibrium condition. The steady state heat solver considers three basic modes of heat transfer: conduction, convection and radiation. The output from the steady state solver is a single value of temperature for each node. Derived values such as flux and temperature gradients are also available.  
Two types of steady state heat solutions are possible:  
Linear  The linear solver can be used for problems that involve conduction and convection modes of heat transfer and where the material properties are independent of temperature.  
Nonlinear  Any problem that includes radiation heat transfer, or temperature dependent material properties, requires the nonlinear solver.  
 
The steady state heat solver performs the following steps:  


Notes 

The solution of a steady state heat analysis, i.e. nodal temperatures, can be used in any of the structural solvers, as a temperature distribution for thermal stress analysis.  
Transient heat solver 

The transient heat solver uses a time stepping approach to calculate the temperature variation in a structure as a function of time. The solver considers three basic modes of heat transfer: conduction, convection and radiation. The output from this solver is a set of nodal temperatures at each time step. This provides a point wise approximation to the variation of temperature in the structure as a function of time.  
Two basic types of transient heat solutions are possible: 

Linear  The linear solver can be used for problems that involve conduction and convection modes of heat transfer and where the material properties are independent of temperature, but the temperature varies with time.  
Nonlinear  Any problem that includes radiation heat transfer, temperature dependent material properties, or variable time steps, requires the nonlinear solver.  
The transient heat solver performs the following steps: 



Notes 



For more information on thermal analysis, see Strand7 Webnotes  Thermal / Heat Transfer. 