On a twisted conical K\"ahler-Ricci flow

In this paper, we discuss diameter bound and Gromov-Hausdorff convergence of a twisted conical K"ahler-Ricci flow on the total spaces of some holomorphic submersions. We also observe that, starting from a model conical K"ahler metric with possibly unbounded scalar curvature, the conical K"ahler-Ricci flow will instantly have bounded scalar curvature for $t>0$, and the bound is of the form $\frac{C}{t}$. Several key results will be obtained by direct arguments on the conical equation without passing to a smooth approximation. In the last section, we present several remarks on a twisted K"ahler-Ricci flow and its convergence.