I got a 7x7 m porch. What type of ventilation gives you the more pleasant air feeling?

Top down, one big one or several small ones?

Or semi-rotating ventilation more from the side?

If more than one, I guess they should blow basically from one direction to give the feeling of natural wind.

I think you are talking about fans

I guess it depends on the size and location of the porch

7m x7m is a large area, and a combination of all that you mentioned will need to be used

keep in mind the following concerns.

Heat rices, so the temperature in a high ceiling is a lot higher than at floor level, in high ceiling areas , to bring that hot air down is counterproductive.

one side of the porch, will be hotter than an other depending on time of the day, and sun position, so fans blowing air in from the cool side, and not from the hot side might be a good ides.

I

Sirineou, that is helpful,

I was considering the top down fan because that what is in all shopping centers, and in many normal rooms.

I guess it depends on the ceiling height.