Bank Nifty is expected to open flat today. After the opening, it is likely to trade within a consolidation zone between the 51500 and 52000 levels throughout the session. A significant downside movement is expected only if Bank Nifty starts trading below the 51450 level, which could lead to a decline toward the 51050 mark. Conversely, a strong bullish rally may occur only if it breaks above the 52050 level, signaling potential upward momentum.