METEO 300 Lecture Notes - Lecture 13: Mass Flow Rate, Conservation Of Mass, Control Volume
Document Summary
Me 300 - lecture 13 - mass conservation. Steady flow mass conservation: mass cannot be accumulated (stored) or created (generated). The mass conservation equation becomes: m in= m out for a control volume. *this equation may change depending on the control volume. For example, a jet engine obeys the mass conservation equation: m air+m fuel= m exit. The mass flow rate can be calculated by: m = a vx, is the density, a is the area of the surface, and vx is the velocity that is perpendicular to the plane of a. Solution: m 1>m 2, m 1 = m 2, m 1 < m 2. According to steady flow mass conservation, the rate of mass flow in equals the rate of mass flow out. m 1 = m 2. An expanding pipe has a steady flow through it. 1: v1>v2, v1 = v2, v1 < v2.
