Steady and unsteady solver
Hey guys,
I am totally new to CFD so appologies if this may seem trivial to some of you. I am modelling windflow around a large number of buildings for my first CFD project. When attempting to solve the solution using a steady state solver, I could not get the solution to converge. I then attempted to solve the problem using a unsteady state solver and managed to get total convergence. I really want to know why the solution convergerd when using unsteady solver but did'nt using a steady state solver. Thanks in advance for any replies. Sam 
Re: Steady and unsteady solver
First, some flows are inherently unsteady and have no steadystate solution. Second, transient solutions tend to be numerically more stable, and often converge when the mesh is not good enough or the solution controls too restrictive to converge a steadystate solution.

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