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An axial flow turbine operates in the exactly reverse of an axial flow compressor. A set of static guide vanes or nozzle vanes accelerates and adds swirl to the fluid and directs it to the next row of turbine blades mounted on a turbine rotor. ==Stage velocity triangle== The angles in the absolute system are noted by alpha (α) and the angles in the relative system are noted by beta (β). Axial and tangential components of both absolute and relative velocities are shown in the figure. Static and stagnation values of pressure and enthalpy in the absolute and relative systems are also shown. It is often assumed that the axial velocity component remains constant through the stage. From this condition we get, cx = c1 cos α1 = c2 cos α2:= w2 cos β2 = c3 cos α3 = w3 cos α3 Also, for constant axial velocity yields a useful relation: tan α2 + tan α3 = tan β2 + tan β3 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Axial Turbine Stages」の詳細全文を読む スポンサード リンク
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