工程流体力学分析,ansys
4.2 The Acceleration Field of a Fluid V (r , t ) iu( x, y, z, t ) jv( x, y, z, t ) kw( x, y, z, t ) dV du dv dw a i j k dt dt dt dt
du u u x u y u z dt t x t y t z t
u u u u u v w t x y zLocal acceleration 0 unsteady t
Nonlinear terms
Convective acceleration
nonuniform
0 xi3