000			01857pam a2200205a 44500
003			OSt
008			160408bc1994 xxu||||| |||| 00| 0 eng d
020			_a812240653X
040			_cIIT Kanpur
041			_aeng
082			_a621.406 _bR18tu
100			_aRao, J. S.
245	1		_aTurbomachine unsteady aerodynamics _cJ. S. Rao
260			_aNew Delhi _bWiley Eastern _c1994
300			_axi, 520p
500			_aIncludes bibliographical references and index
520			_aThe problem of blade fatigue failures is important in the design of new gas turbines. The most important information required in estimating the blade life is the non-steady force field arising out of the stage flow path interaction. This book is concerned with such information. The basic principles of inviscid incompressible flows are first presented, with applications to elementary incompressible flows. The airfoil theory using conformal mapping is then given to explain the basic principles of steady aerodynamic lift, followed by two-dimensional thin airfoil theory. The unsteady thin airfoil theory due to transverse and chord-wise gusts in the upstream flow is given in detail, which is then linked to the turbomachine stage flow. The blade lift and moment calculations arising out of potential flow and vortex wakes from the neighboring row are then presented. Next, the principles of compressible flow are introduced with an extension to the turbomachine stage problem. A modified exact hydraulic analogy for isentropic flows is then introduced to study flow path interaction in a gas turbine stage. Finally, viscous flow and boundary layer theory are introduced with applications to the turbomachine blades. Thus, this book enables a designer to determine the blade's steady force field in a turbomachine.
650			_aTurbomachines -- Aerodynamics
942			_cBK
999			_c315817 _d315817