The author proposes an intriguing novel fluid rheology model [1] which can address both gas and cavitating liquid bearings depending on the choice of a single adjustable gas mass fraction number λ. His model appears to be readily incorporated into a finite element representation of the Reynolds equation, and his numerical results appear to agree well with previously published numerical and experimental results for thrust bearings under steady load and speed.

We must note that his literature survey is incomplete in that it omits all mention of an older mass-conserving cavitation algorithm proposed by Kumar and Booker [2] for fluid-film bearings and demonstrated in representative publications for planar, cylindrical, and spherical bearing geometry [3–8]. This older algorithm, denoted as the K–B algorithm for discussion purposes here, assumes a biphase lubricant rheology model which does not require...

References

References
1.
Brunetiere
,
N.
,
2018
, “
A General Model for Liquid and Gas Lubrication, Including Cavitation
,”
ASME J. Tribol.
,
140
(
2
), p.
021702
.
2.
Kumar
,
A.
, and
Booker
,
J. F.
,
1991
, “
A Finite Element Cavitation Algorithm
,”
ASME J. Tribol.
,
113
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), pp.
276
286
.
3.
Kumar
,
A.
, and
Booker
,
J. F.
,
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, “
A Finite Element Cavitation Algorithm: Application/Validation
,”
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,
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4.
Boedo
,
S.
, and
Booker
,
J. F.
,
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, “
Cavitation in Normal Separation of Square and Circular Plates
,”
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,
117
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3
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403
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.
5.
Boedo
,
S.
, and
Booker
,
J. F.
,
1997
, “
Surface Roughness and Structural Inertia in a Mode-Based Mass-Conserving Elastohydrodynamic Lubrication Model
,”
ASME J. Tribol.
,
119
(
3
), pp.
449
455
.
6.
Boedo
,
S.
,
2011
, “
Mass Conserving Cavitation Effects in Squeeze-Film Journal Bearings Subjected to Sinusoidal Loads
,”
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,
54
(
1
), pp.
21
35
.
7.
Boedo
,
S.
, and
Booker
,
J. F.
,
2009
, “
Dynamics of Offset Journal Bearings—Revisited
,”
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,
223
(
3
), pp.
359
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; 606–607.
8.
Boedo
,
S.
,
Booker
,
J. F.
, and
Coots
,
S. A.
,
2013
, “
Swing Phase Lubrication Analysis of a Novel Artificial Hip Joint
,”
ASME
Paper No. IMECE2013-64356.
9.
Hays
,
D. F.
, and
Feiten
,
J. B.
,
1964
, “
Cavities Between Moving Parallel Plates
,”
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,
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,
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, pp.
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.
10.
Boedo
,
S.
, and
Booker
,
J. F.
,
2005
, “
Modal and Nodal EHD Analysis for Gas Journal Bearings
,”
ASME J. Tribol.
,
127
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), pp.
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.
11.
Miller
,
B. A.
, and
Green
,
I.
,
2001
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Numerical Formulation for the Dynamic Analysis of Spiral-Grooved Face Seals
,”
ASME J. Tribol.
,
123
(
2
), pp.
395
403
.
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