Hydrodynamic Lubrication 2009 Part 14 pps

Poreh, “A Turbulent Energy Dissipation Model for Flows With Drag Reduction”, Journal of Fluids Engineering, Trans.. Hashimoto, “Turbulent Lubrication Theory Using the Frictional Law Firs

24 L.G Hampson and H Naylor, “Friction Reduction in Journal Bearing by High Molecular

Weight Polymers”, Proc the 2nd Leads-Lyon Symposium on Tribology, Mechanical

Engineering Publications Ltd., London, September 1975, pp 70 - 72

25 S Hassid and M Poreh, “A Turbulent Energy Dissipation Model for Flows With Drag

Reduction”, Journal of Fluids Engineering, Trans ASME, Vol 100, No 1, March

1978, pp 107 - 112

26 S Wada and H Hashimoto, “Turbulent Lubrication Theory Using the Frictional Law (First Report, Derivation of Turbulent Coefficient and Lubrication Equation)” (in

Japanese), Trans JSME, Vol 44, No 382, June 1978, pp 2140 - 2148.

27 S Wada and H Hashimoto, “Ditto (Second Report, Its Application to Journal Bearing)”

(in Japanese), Trans JSME, Vol 44, No 382, June 1978, pp 2149 - 2156.

28 R.E Hinton and J.B Roberts, “The Characteristics of a Statically Loaded Journal

Bear-ing with Superlaminar Flow”, Journal of Mechanical EngineerBear-ing Science, IMechE,

London, Vol 22, No 2, 1980, pp 79 - 94

29 H Fukayama, M Tanaka and Y Hori, “Friction Reduction in Turbulent Journal Bearings

by Highpolymers”, Journal of Lubrication Technology, Trans ASME, Series F, Vol.

102, No 4, October 1980, pp 439 - 444

30 T Kato and Y Hori, “Taylor Vortices in a Journal Bearing” (in Japanese), Trans JSME,

Vol 49, No 445, September 1983, pp 1510 - 1520

31 T Kato and Y Hori, “Turbulent Lubrication Theory Using k-ε Model for Journal

Bear-ings” (in Japanese), Journal of Japan Society of Lubrication Engineers, Vol 28, No.

12, December 1983, pp 907 - 914

32 S Kaneko, Y Hori and M Tanaka, “Static and Dyanmic Characteristics of Annular Plain

Seals”, Proc of Third International Conference on Vibrations in Rotating Machinery,

IMechE, Univ of York, England, September 11 - 13, 1984, pp 205 - 214

33 Y Hori, H Fukayama, M Tanaka, T Kato and S Kaneko “Turbulent

LubricationThe-ory for Annular Plain Seals” (ln Japanese), Journal of Japan Society of Lubrication Engineers, Vol 30, No 6, June 1985, pp 430 - 437.

34 T Kato and Y Hori, “Pressure Distributions in a Journal Bearing Lubricated by Drag

Reducing Liquids under Turbulent Conditions”, Proceedings JSLE International Tri-bology Conference, July 8 - 10, 1985, Tokyo, Japan, pp 571 - 576.

35 S Kaneko, Y Hori, T Kato and M Tanaka, “Static Characteristics of Annular Plain

Seals in the Turbulent Regime” (in Japanese), Journal of Japan Society of Lubrication Engineers, Vol 31, No 7, July 1986, pp 493 - 500.

36 S Kaneko, Y Hori and M Tanaka, “Dynamic Characteristics of Annular Plain Seals

in the Turbulent Regime (First Report, Theoretical Analysis) ” (in Japanese), Jour-nal of Japan Society of Lubrication Engineers, Vol 31, No 9, September 1986, pp.

650 - 657

37 S Kaneko, Y Hori and M Tanaka, “Dynamic Characteristics of Annular Plain Seals

in the Turbulent Regime (Second Report, Experimental Analysis) ” (in Japanese),

Journal of Japan Society of Lubrication Engineers, Vol 32, No 2, February 1987,

pp 141 - 147

38 H.K Myong and N Kasagi, “A New Proposal for a k-ε Turbulence Model and Its

Evalu-ation (First Report, Development of the Model)” (in Japanese), Trans JSME, C, Vol.

54, No 507, November 1988, pp 3003 - 3009

39 C Arakawa, “Computational Fluid Dynamics for Engineering” (in Japanese), University

of Tokyo Press, Tokyo, 1994.

40 T Kajishima, “Numerical Simulation of Turbulent Flows” (in Japanese), Yokendo Ltd., Tokyo, 1999

alignment of bearings 89

Amonton’s law 5

animal joint 137

approximate nonlinear analysis 98

bearing number 2

boundary condition

- of oil film 27

G¨umbel’s - 28, 37, 42

half Sommerfeld’s - 29

Reynolds’ - 29

separation - 29

Sommerfeld’s - 28, 31

Swift-Stieber’s - 29

boundary lubrication 4

cavitation 146

chaos 112

circular bearing 23

circular journal bearings 25

column model 153

constant-strain-rate modulus 154

Coulomb’s law 5

critical speed 63

cylindrical coordinates 55

deformation of a pad 58

dissipation energy 170

dry friction 4

dynamic oil film force 71

dynamic oil film pressure 68

energy equation 166, 168

energy loss 1

finite element method 122 finite length (journal) bearing 27, 43 finite length plane pad bearing 54 floating bush bearing 24, 102, 113 fluid film seal 209, 211

foil bearing 119 foil disk 131 friction 1 generator rotor 87 half-speed whirl 65 heat generation 161 Hermann’s variational method 150 Holm, R 6

hydrodynamic bearing 23 hydrodynamic lubrication 3, 6, 9 hydrostatic bearing 23

infinitely long (journal) bearings 29 infinitely long bearing 31

infinitely long plane pad bearing 48 isoviscous anlysis 172

Jost Committee 2 journal bearing 6, 23 journal bearing

- attitude angle 25

- clearance circle 25

- eccentricity ratio 25

- frictional moment 35, 40, 43

- infinite length approximation 27

- load capacity 35

- oil film constant 75

- oil film damping constants 75

- oil film force 32, 38, 42

- oil film pressure 29, 31, 37, 41

- oil film spring constant 75

- oil film thickness 26

- radial clearance 25

- shape of oil film 26

- short bearing approximation 27, 41

k-ε model 203, 214

K´arm´an constant 202

Kingsbury bearing 48

Knudsen number 59, 131

leakage of lubricating oil 43

Leonardo da Vinci 5

limit cycle 98

locus of journal center 33, 39, 42

lubricant 1

lubrication 1

various forms of - 2

magnetic disk memory device 7, 59

magnetic head 7

magnetic tape memory storage 120, 130

mean free path 59, 130

Michell bearing 48

mixed lubrication 4

mixing length model 201, 204

moir´e method 132, 158

moving surface 22

multi-arc bearing 23

multibearing system 89

nonlinear stability 94

oil film rupture 28

oil whip 63, 64

- hysteresis 64, 84

- inertia effect 64

- influence of an earthquake 92

- preventing method 113

- theory 67

secondary - 87

oil whirl 65

Okazaki’s method 69

parametric excitation 63

partial bearing 23

Pertrov’s law 36

plane pad bearing 48

- center of pressure 52

- frictional force 53

- load capacity 51

- pivot position 53

- pressure distribution 49 porous bearing 109 pressure spike 120 read/write element 59 Reynolds’ equation 11, 17 generalized- 163, 165 Reynolds’ stress 199 Reynolds’ theory 11 Reynolds, O 9 Routh-Hurwitz criterion 79 sector pad bearing 55 seizure 1

self-excited vibrations

- due to oil film action 63

- due to internal damping 63 flow-induced - 63

short bearing 41 side leakage factor 54 sinusoidal squeeze 144, 145, 149 skeletal joint 7

sliding bearing 23 slip flow 59, 131 small-end bearing 137 solid friction 4 Sommerfeld transform 30 Sommerfeld’s number 34 squeeze effect 7, 18, 137 squeeze film 137 stability chart 80, 81 stability limit 76 stationary surface 21 stretch effect 18 Stribeck diagram 3 Taylor vortex 224 temperature analysis

- of a circular journal bearing 185

- tilting pad thrust bearing 172 temperature rise 161

thermohydrodynamic lubrication 162 THL 162

three arc bearing 23, 106, 113

- offset factor 107

- preload factor 107

thrust bearing 23, 47

tilting pad bearing 23, 48, 113

time-average equation of motion 200

Toms’ effect 222

Tower, B 9

transfer matrix 91

transition temperature

of oil film 161

tribology 2

meaning of - 7

true contact area 5

turbulence model 201

turbulent flow energy 203 turbulent flow loss 203 turbulent lubrication 197 turbulent lubrication theory

- k-ε model 215

- mixing length model 204 turbulent shear stress 199 turbulent viscosity coefficient 202, 203 two arc bearing 23, 113

viscoelastic model 153 wear 1

wedge effect 7, 18