Siddharth Thakur - Academia.edu (original) (raw)
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University of Sciences and Technology-Oran- Mohamed Boudiaf (USTOMB).
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Papers by Siddharth Thakur
International Journal of Heat and Mass Transfer, 1999
Computations are performed to simulate a discrete hole _lm cooling~ow over an experimental test g... more Computations are performed to simulate a discrete hole _lm cooling~ow over an experimental test geometry representative of the leading edge of turbine blades[ A multiblock pressure correction algorithm is used for the computations\ and both low!Reynolds number and wall function kÐo models are used for turbulence closure[ The~ow through the coolant ducts\ from the plenum to the blade surface\ is resolved as a part of the computation by specifying the coolant mass~ux in the plenum[ A systematic grid re_nement study is conducted with the _nest grid consisting of approximately one million points[ Next\ the~ow_eld is examined^key physical mechanisms resulting from the inter! actions between the cooling jets and the freestream are identi_ed and their e}ect on the thermal _eld is compared with the experimentally observed thermal _eld[ Finally\ a study of geometric parametric variation is conducted to optimize the _lm cooling design[ Nine di}erent combinations of two parameters\ namely\ the relative stagger and the relative angle between the two rows of cooling holes are investigated for their e}ect on heat transfer on the blade surface[ Þ 0888 Elsevier Science Ltd[ All rights reserved[ Nomenclature D hole diameter k turbulent kinetic energy P production of turbulent kinetic energy s streamwise coordinate along the blade surface measured from the symmetry plane u\ v\ w Cartesian velocity components U freestream or coolant velocity x\ y\ z Cartesian coordinates y ¦ non!dimensionalized distance from wall "wall coor! dinates# z spanwise coordinate on the blade surface[ Greek symbols o rate of dissipation of turbulent kinetic energy m molecular viscosity m t turbulent "eddy# viscosity h surface adiabatic e}ectiveness 7 density
& Proceedings 저널· 프로시딩즈| 기술보고서| 해외 …, 1999
The emphasis in this work is on the review and application of differential Reynolds stress models... more The emphasis in this work is on the review and application of differential Reynolds stress models (RSMs) for complex three-dimensional geometries. First, we review the latest status of RSMs and the various associated modeling issues. Then, practically relevant implementation ...
International Journal of Heat and Mass Transfer, 1999
Computations are performed to simulate a discrete hole _lm cooling~ow over an experimental test g... more Computations are performed to simulate a discrete hole _lm cooling~ow over an experimental test geometry representative of the leading edge of turbine blades[ A multiblock pressure correction algorithm is used for the computations\ and both low!Reynolds number and wall function kÐo models are used for turbulence closure[ The~ow through the coolant ducts\ from the plenum to the blade surface\ is resolved as a part of the computation by specifying the coolant mass~ux in the plenum[ A systematic grid re_nement study is conducted with the _nest grid consisting of approximately one million points[ Next\ the~ow_eld is examined^key physical mechanisms resulting from the inter! actions between the cooling jets and the freestream are identi_ed and their e}ect on the thermal _eld is compared with the experimentally observed thermal _eld[ Finally\ a study of geometric parametric variation is conducted to optimize the _lm cooling design[ Nine di}erent combinations of two parameters\ namely\ the relative stagger and the relative angle between the two rows of cooling holes are investigated for their e}ect on heat transfer on the blade surface[ Þ 0888 Elsevier Science Ltd[ All rights reserved[ Nomenclature D hole diameter k turbulent kinetic energy P production of turbulent kinetic energy s streamwise coordinate along the blade surface measured from the symmetry plane u\ v\ w Cartesian velocity components U freestream or coolant velocity x\ y\ z Cartesian coordinates y ¦ non!dimensionalized distance from wall "wall coor! dinates# z spanwise coordinate on the blade surface[ Greek symbols o rate of dissipation of turbulent kinetic energy m molecular viscosity m t turbulent "eddy# viscosity h surface adiabatic e}ectiveness 7 density
& Proceedings 저널· 프로시딩즈| 기술보고서| 해외 …, 1999
The emphasis in this work is on the review and application of differential Reynolds stress models... more The emphasis in this work is on the review and application of differential Reynolds stress models (RSMs) for complex three-dimensional geometries. First, we review the latest status of RSMs and the various associated modeling issues. Then, practically relevant implementation ...