Run calculation

adib 94 · November 22, 2017, 08:25

can someone explain what is the difference between run calculation using iterations and time steps?

e_cfd · November 22, 2017, 10:22

Dear Adib,

For solving discretized governing equations (i. e. continuity, momentum, energy ...) you need to apply an iterative method. In fact, for steady problems, you can find the solution by iterating while for transient problems you need to use an implicit (or explicit) formulation. It means that you need to iterate in each time step to find the solution in that time and then can advance (in time).

November 22, 2017, 08:25	Run calculation	#1
adib 94 New Member adib Join Date: Nov 2017 Posts: 10 Rep Power: 8	can someone explain what is the difference between run calculation using iterations and time steps?

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November 22, 2017, 10:22		#2
e_cfd Member ehsan Join Date: Sep 2014 Posts: 38 Rep Power: 11	Dear Adib, For solving discretized governing equations (i. e. continuity, momentum, energy ...) you need to apply an iterative method. In fact, for steady problems, you can find the solution by iterating while for transient problems you need to use an implicit (or explicit) formulation. It means that you need to iterate in each time step to find the solution in that time and then can advance (in time).