display Q1 for illustrating the influences of various factors when the default selref=T is selected. The process is transient. A single cell has a uniform source of C1. Heavy linear under-relaxation is used so as to necessitate many sweeps for convergence. Neither the solution nor the number of sweeps is influenced by XULAST, YVLAST, ZWLAST, TLAST OR RHO1. Both are influenced by: RESFAC, FIINIT(C1) and the relaxation factor. enddis #pause enddis TEXT(Influences On Convergence; Transient STEADY=F; SOLVE(C1) PATCH(SOURCE,PHASEM,1,1,1,1,1,1,1,1) The larger is the absolute magnitude of the following quantity the smaller will be the number of iterations, and therefore the accuracy of the solution. FIINIT(C1)=10 Changing either of the next two statements will change the (un-converged) solution RELAX(C1,LINRLX,0.01); RESFAC=0.01 Changing any of the next five statements will have no effect on the solution zwlast=100; yvlast=10; xulast=1/10; tlast= 1/100; rho1=.0001 COVAL(SOURCE,C1,FIXFLU,1/TLAST) LSWEEP=1000; TSTSWP=10; NPLT=10; ORSIZ=0.2