Abstract
On the basis of the Brinkman-extended Darcy model (BEDM), this paper examines the effects of viscous shear stresses on the linear stability of finite porous journal bearings. The result shows that the influences of viscous shear stresses on the dynamic performance of porous journal-bearing systems are apparent and not negligible. In certain regions of parameter space the BEDM predicts quite different stability characteristics to those derived using either the slip-flow model (SFM) or Darcy model (DM). In particular, a higher threshold speed (increased stability) is predicted using the BEDM for porous bearings with (i) small length-to-diameter ratios (λ < 1) or (ii) low permeability parameters and high steady-state eccentricity ratios.
| Original language | English |
|---|---|
| Pages (from-to) | 645-658 |
| Number of pages | 14 |
| Journal | International Journal of Mechanical Sciences |
| Volume | 36 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1994 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Linear stability analysis of finite porous journal bearings-Use of the Brinkman-extended Darcy model. / Lin, Jaw Ren; Hwang, Chi-Chuan.
In: International Journal of Mechanical Sciences, Vol. 36, No. 7, 01.01.1994, p. 645-658.Research output: Contribution to journal › Article
TY - JOUR
T1 - Linear stability analysis of finite porous journal bearings-Use of the Brinkman-extended Darcy model
AU - Lin, Jaw Ren
AU - Hwang, Chi-Chuan
PY - 1994/1/1
Y1 - 1994/1/1
N2 - On the basis of the Brinkman-extended Darcy model (BEDM), this paper examines the effects of viscous shear stresses on the linear stability of finite porous journal bearings. The result shows that the influences of viscous shear stresses on the dynamic performance of porous journal-bearing systems are apparent and not negligible. In certain regions of parameter space the BEDM predicts quite different stability characteristics to those derived using either the slip-flow model (SFM) or Darcy model (DM). In particular, a higher threshold speed (increased stability) is predicted using the BEDM for porous bearings with (i) small length-to-diameter ratios (λ < 1) or (ii) low permeability parameters and high steady-state eccentricity ratios.
AB - On the basis of the Brinkman-extended Darcy model (BEDM), this paper examines the effects of viscous shear stresses on the linear stability of finite porous journal bearings. The result shows that the influences of viscous shear stresses on the dynamic performance of porous journal-bearing systems are apparent and not negligible. In certain regions of parameter space the BEDM predicts quite different stability characteristics to those derived using either the slip-flow model (SFM) or Darcy model (DM). In particular, a higher threshold speed (increased stability) is predicted using the BEDM for porous bearings with (i) small length-to-diameter ratios (λ < 1) or (ii) low permeability parameters and high steady-state eccentricity ratios.
UR - http://www.scopus.com/inward/record.url?scp=0028464875&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028464875&partnerID=8YFLogxK
U2 - 10.1016/0020-7403(94)90019-1
DO - 10.1016/0020-7403(94)90019-1
M3 - Article
VL - 36
SP - 645
EP - 658
JO - International Journal of Mechanical Sciences
JF - International Journal of Mechanical Sciences
SN - 0020-7403
IS - 7
ER -