In this paper, using systems under tension we investigate the bubble nucleation mechanisms from flat surfaces with grooves. The maximum pressure sustained by the system (nucleation pressure) is used as a surrogate to understand the propensity to nucleate. Homogeneous nucleation studies are carried out to set a reference point for our heterogeneous simulations. The remainder of the paper is structured as follows. In Section 2 we present our modeling methodology and simulation details. Section 3 details our results. Finally, in Section 4 we summarize our findings.