%0 Conference Paper %1 Topbas2015Conjugate %A Topbas, Bilge S. %A Celik, Bayram %B ULIBTK'15 20. Ulusal Isı Bilimi ve Teknigi Kongresi %D 2015 %K 35k05-heat-equation 76-04-fluid-mechanics-explicit-machine-computation-and-programs 76m12-finite-volume-methods-in-fluid-mechanics 76r05-forced-convection 80-04-heat-transfer-explicit-machine-computation-and-programs 80a20-heat-and-mass-transfer 80m12-finite-volume-methods-in-heat-transfer openfoam %T Conjugate Heat Transfer Analysis for Internally Cooled Solid Structure %U https://www.researchgate.net/publication/281849519\_Conjugate\_heat\_transfer\_analysis\_for\_internally\_cooled\_solid\_structure %X In order to realistically model the heat and mass transfer over an internally cooled solid structure, such as turbine blades, it is necessary to solve the heat equation for solid and fluid regions simultaneously. A conjugate heat transfer solver is developed by explicitly coupling two existing solvers of open source CFD software package, OpenFOAM (OpenFOAM, 2015). The both solvers are based on finite volume method. At each time step, temperature fields for solid and fluid regions are obtained from a transient heat conduction solver and an unsteady incompressible Navier-Stokes (with energy equation) solver, respectively. Then, the developed solver performs inner iterations by resolving the heat equations for solid and fluid till reaching the desired accuracy in terms of the continuity errors of the temperature and the heat flux on the contact surface between the solid and the fluid. The objective of the present study is to investigate the effect of cooling channels inside a solid structure, such as a turbine blade, on the conjugate heat transfer by using the developed solver. Within this scope, in the present study, conjugate heat transfer analysis is performed for two benchmark problems, Couette and Backward Facing Step flow, and the results are compared to the Couette and Backward Facing Step flow solutions of Ramsak (2015). Excellent agreement has been found between the reference studies and the numerical solutions obtained for both of the benchmark problems. Then, preliminary results are obtained for an internally cooled airfoil in terms of conjugate heat transfer analysis. The obtained temperature distribution on the airfoil in terms of temperature gradient is evaluated, whose high value is harmful for structure.

@inproceedings{Topbas2015Conjugate, abstract = {{In order to realistically model the heat and mass transfer over an internally cooled solid structure, such as turbine blades, it is necessary to solve the heat equation for solid and fluid regions simultaneously. A conjugate heat transfer solver is developed by explicitly coupling two existing solvers of open source CFD software package, OpenFOAM (OpenFOAM, 2015). The both solvers are based on finite volume method. At each time step, temperature fields for solid and fluid regions are obtained from a transient heat conduction solver and an unsteady incompressible Navier-Stokes (with energy equation) solver, respectively. Then, the developed solver performs inner iterations by resolving the heat equations for solid and fluid till reaching the desired accuracy in terms of the continuity errors of the temperature and the heat flux on the contact surface between the solid and the fluid. The objective of the present study is to investigate the effect of cooling channels inside a solid structure, such as a turbine blade, on the conjugate heat transfer by using the developed solver. Within this scope, in the present study, conjugate heat transfer analysis is performed for two benchmark problems, Couette and Backward Facing Step flow, and the results are compared to the Couette and Backward Facing Step flow solutions of Ram\v{s}ak (2015). Excellent agreement has been found between the reference studies and the numerical solutions obtained for both of the benchmark problems. Then, preliminary results are obtained for an internally cooled airfoil in terms of conjugate heat transfer analysis. The obtained temperature distribution on the airfoil in terms of temperature gradient is evaluated, whose high value is harmful for structure.}}, added-at = {2019-03-01T00:11:50.000+0100}, author = {Topba\c{s}, Bilge S. and Celik, Bayram}, biburl = {https://www.bibsonomy.org/bibtex/2b5d76ac52586e4eb4f500950bec46dce/gdmcbain}, booktitle = {ULIBTK'15 20. Ulusal Is{\i} Bilimi ve Tekni\u{g}i Kongresi}, citeulike-article-id = {14611980}, citeulike-linkout-0 = {https://www.researchgate.net/publication/281849519\_Conjugate\_heat\_transfer\_analysis\_for\_internally\_cooled\_solid\_structure}, comment = {(private-note)mentioned by sam 2018-07-07}, interhash = {6c0df8d1dfbbbae8c2a5749f69b84b03}, intrahash = {b5d76ac52586e4eb4f500950bec46dce}, keywords = {35k05-heat-equation 76-04-fluid-mechanics-explicit-machine-computation-and-programs 76m12-finite-volume-methods-in-fluid-mechanics 76r05-forced-convection 80-04-heat-transfer-explicit-machine-computation-and-programs 80a20-heat-and-mass-transfer 80m12-finite-volume-methods-in-heat-transfer openfoam}, posted-at = {2018-07-09 02:00:53}, priority = {5}, timestamp = {2019-03-01T00:11:50.000+0100}, title = {{Conjugate Heat Transfer Analysis for Internally Cooled Solid Structure}}, url = {https://www.researchgate.net/publication/281849519\_Conjugate\_heat\_transfer\_analysis\_for\_internally\_cooled\_solid\_structure}, year = 2015 }