code: def flow_orifice(Diam, Height, RatioVCOrifice):
      
      #Checking input validity
      ut.check_range([Diam, ">0", "Diameter"],
                     [RatioVCOrifice, "0-1", "VC orifice ratio"])
      if Height > 0:
          return (RatioVCOrifice * area_circle(Diam).magnitude
                  * np.sqrt(2 * gravity.magnitude * Height))
      else:
          return 0
docs: Return the flow rate of the orifice.