APSC 101 Chapter Notes - Chapter 7: Qnet, Spreadsheet
Document Summary
Requirements: the design must have it; pass or fail. Objectives: differentiate based on levels of performance, describe stakeholder satisfaction. Design parameter values determined by the engineers; such as material, laptop battery. These dictate the product attributes, like how much it will cost. Maximize satisfaction, quantify performance for a single objective. Minimum satisfaction is usually associated with a requirement. Find a qin and qout so that height in tank is constant. Qnet is the rate of change in the volume of water in the take per time. Catchment area: width of half the roof and b, length of the roof. Depends on how hard the rain is and how large the catchment area. Low cost, quick, powerful, look at behavior over a period. Need to make assumptions, rely on approximations, need to interpret the results to apply to physical results, can"t physically fabricate your model. Numerical allow us to approximate equations that cannot be solve on paper.
