&会岛 Held-Hou model -Angular momentum Review The absolute angular momentum per unit mass is M=(2 a cos o+u)acosΦ a is the radius of the earth Due to earth's Deviation from the solid rotation solid rotation D 1ap Dt M=-p∂入 a cos oFx acoSΦ In an axisymmetric flow([M]=M) coiF] In an inviscid (frictionless),axisymmetric flow,the angular momentum is conserved 授课教师：张洋6M = (⌦a cos ￾ + u)a cos ￾ D Dt M = ￾1 ⇢ @p @￾ + a cos ￾F￾ D Dt[M] = a cos ￾[F￾] 授课教师：张洋 6 Held-Hou model -Angular momentum n The absolute angular momentum per unit mass is a is the radius of the earth Due to earth’s solid rotation Deviation from the solid rotation ⌦ a cos ￾ a ￾ In an axisymmetric flow ([M]=M) In an inviscid (frictionless), axisymmetric flow, the angular momentum is conserved. Review