COOLING LOAD_urban form

HI EVERYONE
i have a question

as far as i know every time the distance between building is narrow, the cooling load also decreases, but what i found after the optimization made me perturb

i found the opposite as shown in the graphs!
even if you think i didn’t put the context during the simulation
then i found the same thing for the solar incident too

KNOWING THAT I ONLY MODELED URBAN BLOCKS WITHOUT WINDOW