Turbine blade temperature transfer using the load surface method

Temperature transfer is important to MDA (multidisciplinary analysis) of turbine blades, for the separation of aerodynamics and structure analysis codes. To re-couple these codes, a load surface method is provided here to transfer temperature across the interface of arbitrarily meshed CFD (Computational Fluid Dynamics) and CSM (Computational Structural Mechanics) models. The idea of the method is to transfer temperature by a Bi-cubic B-spline surface, fitted from the CFD temperature results of interfaces in parametric space. The temperature of the CSM nodes of the interface is calculated from the load surface in the same parametric space. An important step in this transfer method is to map the CFD and CSM nodes into the same parametric space. The mapping surface method is detailed for this purpose. In the mapping method, the nodes are mapped onto a structured quad mesh, called a mapping surface, which is additionally generated on the interface surface. Then, the nodes are mapped into the parametric space, which is defined by a parameterization of the mapping surface. To evaluate the accuracy of the method, the temperature of a turbine blade is transferred experimentally. The result indicates that the method is accurate even for coarse meshes.

[1]  Guru Guruswamy.  A New Modular Approach for Tightly Coupled Fluid/Structure Analysis , 2009 .

[2]  J. Samareh.  Aerodynamic Shape Optimization Based on Free-form Deformation , 2004 .

[3]  Juan J. Alonso,et al.  Fluid/structure coupled aeroelastic computations for transonic flows in turbomachinery , 2002 .

[4]  A Samareh Jamshid.  Aeroelastic Deflection of NURBS Geometry , 1998 .

[5]  Jamshid A. Samareh,et al.  MULTIDISCIPLINARY AERODYNAMIC-STRUCTURAL SHAPE OPTIMIZATION USING DEFORMATION (MASSOUD) , 2000 .

[6]  Andrea Trucco,et al.  A geometrical approach to the surface-fitting problem in underwater three-dimensional acoustic images , 1999 .

[7]  V. Mukhopadhyay,et al.  MULTIDISCIPLINARY HIGH-FIDELITY ANALYSIS AND OPTIMIZATION OF AEROSPACE VEHICLES, PART 1: FORMULATION , 2013 .

[8]  Marilyn J. Smith,et al.  An Evaluation of Computational Algorithms to Interface Between CFD and CSD Methodologies. , 1996 .

[9]  A Samareh Jamshid,et al.  A Unified Approach to Modeling Multidisciplinary Interactions , 2000 .

[10]  Rainald Loehner,et al.  Fluid-structure coupling - Extensions and improvements , 1997 .

[11]  Sara Maad,et al.  Surface fitting with boundary data , 2004, 2004 43rd IEEE Conference on Decision and Control (CDC) (IEEE Cat. No.04CH37601).

[12]  Bernard Grossman,et al.  Multidisciplinary design optimization of a strut-braced wing transonic transport , 2000 .

[13]  J. C. Townsend,et al.  Multidisciplinary High-Fidelity Analysis and Optimization of Aerospace Vehicles , 2013 .

[14]  Hugh Thornburg,et al.  Parametric Mesh Deformation and Sensitivity Analysis for Design of a Joined-Wing Aircraft , 2004 .

[15]  Michael S. Floater,et al.  Parametrization and smooth approximation of surface triangulations , 1997, Comput. Aided Geom. Des..

[16]  Jamshid A. Samareh,et al.  Use of CAD Geometry in MDO , 1996 .

[17]  Rainald Löhner,et al.  Conservative load projection and tracking for fluid-structure problems , 1996 .

[18]  Joaquim R. R. A. Martins,et al.  pyMDO: A framework for high-fidelity multi-disciplinary optimization , 2004 .

[19]  Cai Xian-xin.  MDO Technology Applied to The Aeroengine Turbine Blade Design , 2005 .

[20]  Stephan Bock.  Approach for Coupled Heat Transfer/Heat Flux Calculations , 2003 .

[21]  Robert Haimes,et al.  The Synergistic Use of CAD for Tightly Coupled Analysis and Design , 2005 .

[22]  Xuedong Zhou,et al.  Transonic Compressor IGV/Rotor Interaction Analysis Including Fluid Structure Interaction , 2004 .

[23]  N. Liamis,et al.  Recent advances in aerothermal turbine design and analysis , 2000 .

[24]  John R. Rice,et al.  GasTurbnLab: a multidisciplinary problem solving environment for gas turbine engine design on a network of nonhomogeneous machines , 2002 .