FluidPower.h

#pragma once
 
class FluidPower {
  public:
    FluidPower(double specificGravity, double flowRate, double head)
        : specificGravity(specificGravity), flowRate(flowRate), head(head), isPump(true) {};
 
    FluidPower(double flowRate, const double inletPressure, const double outletPressure,
               const double compressibilityFactor, const double velocityPressure)
        : flowRate(flowRate), inletPressure(inletPressure), outletPressure(outletPressure),
          compressibilityFactor(compressibilityFactor), isPump(false), velocityPressure(velocityPressure) {};
 
    double calculate() {
        if (isPump) {
            return 0.746 * flowRate * head * specificGravity / 3961.38;
        }
        return 0.746 * flowRate * (outletPressure - inletPressure - velocityPressure) * compressibilityFactor / 6362;
    }
 
  private:
    const double specificGravity = 0, flowRate, head = 0;
 
    // used only for fan fluid power calculations
    const double inletPressure = 0, outletPressure = 0, compressibilityFactor = 0;
 
    const bool isPump;
 
    const double velocityPressure = 0;
};