Yes, absolutely, a floor fan can be very effective at helping to dry out spaces that have had recent water damage, helloing to avoid subsequent mold and rust from developing. Anything that moves air naturally around a room can be beneficial in this respect and if the room isn’t too humid and has windows and doors, get those opened first to help the air get circulating. Obviously, you don’t want to be operating any electrical items in rooms with physical standing water but you can direct a fan, blower or air circulator to high areas to help accelerate the drying out process.