Shapes of ovens

[Geezer]

Hi all.
Due to position and size of my slab, im thinking of doing an elliptical shape oven. 2 possible strategies are a semi ellipse with a front buttress wall and external flue or an ellipse with a vertical slice making up the flat front wall, also with an external flue.
pros and cons a d which would be the better choice for air flow and cooking?
cheers.

[david s]

When you say Eloise do you mean the side view or plan view? Maybe add a drawing of your proposed design. Departure from a hemisphere introduces structural weakness and if you intend building a brick oven makes constructing an elliptical form extremely difficult.