[anujsharmax]

Everyone seems to be assuming that you have a big fan which actually changes the air flow in the whole room in a major way. If that's the case, great, put it any way you like - it doesn't matter.

For people like me, who use a cheap fan in the summer. Put it in front of you facing towards you. You will feel cooler.

If you are still interested in CFD I can give you a hand, but this is answer we are going to get from it anyway.

[z3ugma]

I agree with you - it's similar to the principle of a space heater in the winter. You point it at yourself and heat only a small zone. In the summer, point the fan at yourself and use evaporative cooling to cool just a small zone.

[cimmanom]

Fans big enough to significantly change air flow can be cheap. Window size box fans were $20 at the drug store last I checked. Build quality can't be great, but I had a fan like that last 5 years or so through heavy use.