et al. 2004a; Röpke et al.  2007b), we believe that examining 2D models is a natural step forward. Moreover, it illustrates how nucleosynthesis in the different models proceeds, and highlights differences with respect to one-dimensional models.

In particular, we focus on three models in this paper as follows:

-   [**C-DEF:** ]{} A globally spherically symmetric pure-deflagration explosion in which the deflagration was ignited within the *c3*-shape boundary, as was done by Reinecke et al. (1999a). About $2\times10^{-2}\,M_{\odot}$ were initially incinerated to trigger the deflagration. This model is similar to one presented already in Travaglio et al. (2004a).

-   [**C-DDT:** ]{} A delayed detonation model which follows the 2D spherical deflagration C-DEF model. A prescription for the DDT is given below.

-   [**O-DDT:** ]{} A delayed detonation model which follows an extremely off-center deflagration. The deflagration is ignited by 29 bubbles distributed within an opening angle with respect to the $z$-axis of 45 degrees. The outermost bubble was placed at a distance of $\sim 180$ km from the center. About $1\times 10^{-5}\,M_{\odot}$ were initially incinerated to trigger the deflagration. The DDT is treated in the same way as in the C-DDT model.

The exploding WD had a central density of $2.9 