先进材料疑固实验室 Momentum transfer Laboratory of Advanced Materials Solidification Euler equation for momentum transfer Assumptions:ideal fluid,no viscosity,no internal friction Only mass force as gravity,inertia force,electro- magnetic force et al.being considered. At point (x,y,z),a volumetric unit,with Volume V,surface area A and density p, The mass force here would be: d (.v)=d dF 1dF X dm p dv Then,the entire force on the volume is: F=∫pf(x,y,,0dV 上浒充通大学 SHANGHAI JIAO TONG UNIVERSITYMomentum transfer Euler equation for momentum transfer • Assumptions: ideal fluid, no viscosity, no internal friction Only mass force as gravity, inertia force, electro￾magnetic force et al. being considered. At point (x, y, z), a volumetric unit, with Volume V, surface area A and density ρ, The mass force here would be: Then, the entire force on the volume is: