  In this paper, we propose a novel ROM stabilization strategy for
under-resolved convection-dominated flows, the approximate deconvolution Leray
ROM (ADL-ROM). The new ADL-ROM introduces AD as a new means to increase the
accuracy of the classical Leray ROM (L-ROM) without degrading its numerical
stability. We also introduce two new AD ROM strategies: the Tikhonov and van
Cittert methods. Our numerical investigation for convection-dominated systems
shows that, when the filter radius is relatively large, the new ADL-ROM is more
accurate than the standard L-ROM. Furthermore, the new ADL-ROM is less
sensitive with respect to model parameters than L-ROM.
