Air and waterflow electrical generator modeling

I need a mathematical model in which the variables can be altered to determine the efficiency of various configurations. variables are Air pressure in a pipe, air volume in same pipe, dimensions f pipe, depth of entry of air into the pipe below sea-level, speed of water flow in the pipe at variable distances, inclusion of electrical generators at those intervals, torque in KGF required to turn those turbines, length of pipe below air input depth and length of pipe above air input point. generators can be paced below the air entry and/or above the air entry point. The funtion of the air input, compressed in a windmillwind powered compressor is to accelerate the water flow as in an air dredge. The expanding air creats a pressure differential. The force of air and water pressure and gravity acts to accelerate water through each turbine. The water is reaccelerated after each turbine as the air continues to expand as it rises through the pipe, reinvigorating the water flow.