regarding bimodal microstructure

[anujyadav0693]

respected sir,
i am using this code
neper -T -n from_morpho -morpho "diameq:lognormal(0.0005,0.00005)+0.1111111111*lognormal(0.00001,0.0000001),1-sphericity:lognormal(0.145,0.03)" -group "diameq>0.00002?1:2" -morphooptiini "weight:radeq,coo:packing" -dim 2 -domain "square(0.04,0.01)" -o void -format "geo,ori,tess" -statcell diameq -oridescriptor "euler-bunge" -ori "fiber(0,0,1,0,0,1)" -statgroup area -statface id,area

To generate a bimodal microstructure, but i have a query
is there any way to control the small grain percentage.
for example- i want to make multiple models as give in table below-

small grain size small grain percentage
model1 model2 model3 model4

50 micrometer 10% 20% 30% 50%

30 micrometer 10% 20% 30% 50%

My question is, in any way, can I make multiple models of the same small grain dia with different small grain percentages or vice versa?
because I also want to make models of the same small grain percentages with different small grain diameter
Is there any command to control, or should I do the hit-and-trial
thank you.

[anujyadav0693]

If possible, please update the given code.
Thankyou.

[rquey]

Neper's -morpho works with number fractions of grains, not volume fractions. You can reasonably convert one into the other using the average grain sizes.

[anujyadav0693]

neper -T -n from_morpho -morpho "diameq:0.3*lognormal(0.0005,0.00005)+lognormal(0.00005,0.000005),1-sphericity:lognormal(0.145,0.03)" -group "diameq>0.00009?1:2" -morphooptiini "weight:radeq,coo:packing" -dim 2 -domain "square(0.03,0.01)" -o void -format "geo,ori,tess" -statcell diameq -oridescriptor "euler-bunge" -ori "fiber(0,0,1,0,0,1)" -statgroup area -statface id,area

sir, I am using this still I am getting 3.75% of area following the small grain distribution, and the remaining area is given to large grain. This also take to much time to run. please suggest what type of formula this code follows. any way to reduce time