0
TECHNICAL PAPERS

Effect of Radial Clearance on the Flow Between Corotating Disks in Fixed Cylindrical Enclosures

[+] Author and Article Information
Mohammad Al-Shannag, Joan Herrero, Francesc Giralt

Universitat Rovira i Virgili, Department of Chemical Engineering, 43006 Tarragona, Catalonia, Spain

Joseph A. C. Humphrey

Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA 22904-4746

J. Fluids Eng 124(3), 719-727 (Aug 19, 2002) (9 pages) doi:10.1115/1.1487355 History: Received August 02, 1999; Revised February 01, 2002; Online August 19, 2002
Copyright © 2002 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Sketch of the flow configuration investigated numerically. The geometrical parameters shown match those of the test section investigated experimentally by Schuler et al. 1 in which: R1=56.4 mm,R2=105 mm,H=9.53 mm,h=1.91 mm and A=2.7 mm. In this study calculations are performed for five gap sizes (A/R2=0.0064, 0.013, 0.026, 0.052 and 0.077) with Re=2.1×104.
Grahic Jump Location
Effect of grid refinement on axisymmetric calculations of the mean and rms velocities for Re=2.1×104 with A/R2=0.026. (a) Axial profiles of radial velocity components at R=1.0. (b) Axial profiles of the circumferential velocity components at R=0.9. (c) Radial profiles of the axial velocity components at Z=0.25.
Grahic Jump Location
Effect of grid refinement on the time dependence of the axial velocity component at Z=0 for R=0.90 and 1.0. Calculation conditions correspond to Fig. 2.
Grahic Jump Location
Measured and calculated radial profiles of the mean (a) and rms (b) circumferential velocities along the inter-disk mid-plane, Z=0, for the case with A/R2=0.026. Calculations are restricted to the inter-disk space of Fig. 1 using symmetry-plane (Eq. (6)) or periodic-plane (Eq. (7)), boundary conditions in the gaps. The axisymmetric results are averaged over time and the 3D results (and the measurements) are averaged over time and in the circumferential direction. The 3D calculations by Humphrey et al. 8 are for a pair of disks of zero thickness using symmetry-plane boundary conditions in the gaps.
Grahic Jump Location
Cross-stream distributions of the time-averaged flow obtained in a full domain axisymmetric calculation for the geometry of Fig. 1 with A/R2=0.026. (a) Cross-stream flow streamlines (unlabeled). (b) Contours of the mean circumferential velocity component. (c) Contours of the rms circumferential velocity component.
Grahic Jump Location
Cross-stream distributions of the time- and circumferentially-averaged flow obtained in a full domain 3D calculation for the geometry of Fig. 1 with A/R2=0.26. (a) Cross-stream flow streamlines based on the axial and radial velocity components (unlabeled). (b) Contours of the mean circumferential velocity component. (c) Contours of the rms circumferential velocity component.
Grahic Jump Location
Measured and calculated radial profiles of the mean circumferential velocity (a) and rms (b) along the inter-disk mid-plane, Z=0. These are full domain calculations corresponding to the geometry of Fig. 1 with A/R2=0.013 and 0.026. The axisymmetric results are averaged over time and 3D results (and the measurements) are averaged over time and in the circumferential direction.
Grahic Jump Location
Instantaneous cross-stream flow streamlines (unlabeled) corresponding to the full domain 3D calculation conditions of Fig. 6(A/R2=0.026). Contours are plotted at selected (R-Z) planes corresponding to: (a) θ=0.72π; (b) 0.84 π; (c) 1.03 π; (d) 1.91 π.
Grahic Jump Location
Cross-stream distributions of the time- and circumferentially-averaged flow obtained in a full domain 3D calculation for the geometry of Fig. 1 with A/R2=0.013. (a) Cross-stream flow streamlines based on the axial and radial velocity components (unlabeled). (b) Contours of the mean circumferential velocity component. (c) Contours of the rms circumferential velocity component.
Grahic Jump Location
Variations of the disk torque coefficients CMMD and CMSD (defined in the text) as a function of A/R2 for full domain axisymmetric and 3D calculations. Also shown is the experimental fit for CMMD obtained by Hudson and Eibeck 6. The axisymmetric calculations are connected by dotted lines to help visualize the qualitative trends in the data but the lines are not to be interpreted as “best fits” to the numerical data.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In