Page 356 - Bird R.B. Transport phenomena
P. 356

Table  11.4-1   Equations of Change for Pure Fluids in Terms of the Fluxes

                          Eq.            Special  form        In terms of D/Dt                                                                            Comments


                          Cont.          —                                                                                              Table 3.5-1       For p — constant, simplifies  to
                                                                                                                                        (A)                  (V • v) = 0


                          Motion         General                                  T] +                                                  Table 3.5-1       For т = 0 this becomes   Euler's
                                                                                                                                        (B)                 equation


                                         Approximate         p—    = -Vp -    [V- T]  + pg -  pgP(T  - т)                               11.3-2            Displays  buoyancy   term

                                                                                                                                        (C)


                          Energy         In terms of           D(K  + U + Ф)      -(V • q) -   (V • pv) -  (V •  [T • v])                                 Exact only  for Ф time independent
                                                                      Dt
                                         K+   11 +  Ф                                                                                   (D)

                                                               D(K+U)
                                         In terms of                              •q)-   (V  • pv)   (V •  [T • v]) + p(v • g)
                                                                   Dt
                                         £+ U                                                                                           (E)


                                         In terms of                              - ( v [V-T])  +  p ( v g )                            Table 3.5-1       From equation of motion
                                                                                                                                        (F)



                                         In terms of                                    v)  -  (T:VV)                                   11.2-2            Term containing   (V • v) is zero for
                                         U                                                                                              (G)                 constant p

                                                                                            Dp
                                         In terms of         p^--(V.q)- (T:V           v)  +  —                                         11.2-3            H=U+     {pip)
                                         H                                                                                              (H)


                                         In terms of                              - T | -j,  j  (V  •  v)  -  (T:VV)                                      For an ideal gas Т(др/дТ)  ()  = p
                                         C v and T                                                                                      (I)


                                                               £  DT _                 In  p\  Dp
                                         In terms of                      ( V #  }                                                      11.2-5            For an ideal gas {d In pld In T)  =  1
                                                                                                                                                                                          p
                                                                                       In   T) Dt
                                                                                              p
                                         C pand  T                                                                                      (J)
   351   352   353   354   355   356   357   358   359   360   361