The greatest parts of numerical simulation methodology of photosensitive VLSI pixels are the planning of simulation procedure and numerical modeling results verification procedure. To design the optimal simulation methodology leads to obtain the accurate data for practical design of photosensitive pixels. After a series of simulations the algorithm for charge capacity CCD elements calculation through the two-dimensional physic-topological modeling had been developed. This algorithm gives the set of optimal driving voltages for CCD element too. This algorithm had been widely used in practical design of photosensitive CCD and demonstrates the good calculation time economy.