煤烧圆家重点实验宝 The generalized conversion law DΦ Dt +S2=0 Where Sa is the source term of o 2. Continue equation with p=p, Sa=0, O ○t National Lab, of Coal Combustion. HUST or O Wuhan 430074 P R CHINA Dt E-mail:pcbnlcc@hust.edu.cnNL CC National Lab. of Coal Combustion, HUST Wuhan 430074, P. R. CHINA E-mail: pcbnlcc@hust.edu.cn The generalized conversion law + = 0  V S V Dt D   Where S is the source term of  2. Continue Equation with =r, S = 0, ( ) 0 0 0 =   + =   +   =  j j j j x v Dt D v t x Dt D r r r r or