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Keywords: Coriolis force
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Journal Articles
Article Type: Research Papers
J. Turbomach. August 2022, 144(8): 081006.
Paper No: TURBO-21-1247
Published Online: March 3, 2022
... on the performance is studied through wall-resolving large Eddy simulations of a rotor with large relative tip gap size. The simulations are performed in a rotating frame with rotation accounted for through a Coriolis force term. In a first step, experimental results are used to provide validation. The main part...
Journal Articles
Article Type: Research-Article
J. Turbomach. July 2019, 141(7): 071003.
Paper No: TURBO-18-1269
Published Online: February 15, 2019
... inlet passage had a higher heat transfer compared with that of the stationary case, and the leading side heat transfer was less than that of the stationary case. The combined action of the Coriolis force and the centrifugal buoyancy force pushed the colder fluid toward the trailing side, leading...
Journal Articles
Article Type: Research Papers
J. Turbomach. May 2012, 134(3): 031007.
Published Online: July 14, 2011
...Mohammad A. Elyyan; Danesh K. Tafti Large-eddy simulations are used to investigate Coriolis forces effect on flow structure and heat transfer in a rotating dimpled channel. Two geometries with two dimple depths are considered, δ = 0.2 and 0.3 of channel height, for a wide range of rotation number...
Journal Articles
Article Type: Research Papers
J. Turbomach. March 2012, 134(2): 021021.
Published Online: June 30, 2011
... by the ribs. However, in the outlet pass, Coriolis forces markedly affected the rib induced secondary flow field. The influence of rotation on heat transfer was visible in particular in the bend region and in the second pass directly downstream of the bend. Schematic and geometry of the numerical...
Journal Articles
Article Type: Research Papers
J. Turbomach. April 2011, 133(2): 021003.
Published Online: October 19, 2010
... transfer induced by the Coriolis force generally perceived in a ribbed or smooth channel is less evident in a pin-fin channel. One of the well-known notions for rotating channel flow of an orthogonal mode is that the level of heat/mass transfer decreases on the leading surface, but increases...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2009, 131(4): 041005.
Published Online: July 1, 2009
..., and the deflection angles on the suction surface are larger than those on the pressure surface. This was attributed to the combined action of the Coriolis force and centrifugal force. (3) In the rotating case, for CO 2 injection, the magnitude of heat transfer coefficient on the pressure surface is reduced compared...
Journal Articles
Article Type: Research Papers
J. Turbomach. July 2008, 130(3): 031021.
Published Online: May 6, 2008
... that the heat/mass transfer characteristics were influenced by the Coriolis force, the decrement of the main flow rate, and the secondary flow. In the 90 deg angled ribbed channel, the heat/mass transfer reduced on the leading surface with an increment in the rotation number, but it increased on the trailing...
Journal Articles
Article Type: Research Papers
J. Turbomach. October 2007, 129(4): 730–739.
Published Online: August 15, 2006
...M. Nikolic; E. P. Petrov; D. J. Ewins The problem of estimating the mutual interaction of the effects of Coriolis forces and of blade mistuning on the vibration characteristics of bladed disks is addressed in this paper. The influence of different degrees of mistuning on forced response...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2005, 127(4): 659–667.
Published Online: May 24, 2005
... turbines turbulence Coriolis force ducts cooling In engineering applications such as gas turbines and electric generators, characteristics of the flow field, and heat transfer in internal cooling rotating ducts with strong curvature are very important to understand, as the curvature can...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2004, 126(4): 627–636.
Published Online: December 29, 2004
... transfer augmentation ratio 10% to 20% over the action of Coriolis forces alone. However, it does not have any significant effect at the leading side of the duct. The overall effect of buoyancy on heat transfer augmentation for the ribbed duct is found to be less than 10% over the effect of Coriolis forces...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2003, 125(4): 609–622.
Published Online: December 1, 2003
... of the duct which isolates the boundary layers adjacent to the duct wall except for the region in the U bend. In spite of this, the flow structure redistributes slightly with rotation due to the Coriolis force. With the assistance of Fig. 3 , it is found that the Coriolis force acts toward the trailing...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2002, 124(1): 86–99.
Published Online: February 1, 2001
...-196. Review Chair: R. Natole. 04 June 2001 01 February 2001 gas turbines flow simulation subsonic flow stress analysis deformation tensors Coriolis force flow separation turbulence Computational Fluid Dynamics (CFD) coupled to turbomachinery specific steady 1 2...
Journal Articles
Article Type: Technical Papers
J. Turbomach. January 2001, 123(1): 124–132.
Published Online: February 1, 2000
.... Pressure is computed using a hybrid SIMPLER/PISO approach, which satisfies the continuity of mass and momentum simultaneously at every time step. The second-moment solutions show that the secondary flows induced by the angled ribs, rotating buoyancy, and Coriolis forces produced strong nonisotropic...