Abstract
This paper presents theoretical investigations of the rheological effects of lubricant on the performance of the Journal bearing system under steady state condition including squeezing. Runga Kutta Fehlberg method is employed to solve the Reynolds and the energy equations governing the flow of power law fluids simultaneously. Those equations are coupled due to the consistency which is a function of pressure and temperature both. The results show that this simple innovative model can reasonably calculate delta profile and hence the pressure and the temperature. The obtained results that the pressure and the temperature both increase with the power law flow index n and decrease with the increase of the squeezing parameter q. These results are found to be similar to the results available in the literature.
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- c:
-
Radial clearance
- h:
-
Oil film thickness
- m:
-
Consistency index
- n:
-
Flow behaviour index
- p:
-
Hydrodynamic pressure
- Q:
-
Flow flux
- R:
-
Radious of the journal
- t:
-
Time of approach
- T:
-
Temperature
- u,v :
-
Velocity components
- V:
-
Squeeze velocity
- W:
-
Load capacity
- WR :
-
Wπ/Wπ/2 load ratio
- ε:
-
Eccentricity ratio
- θ:
-
Angular co-ordinate
- \( \overline{m} \) :
-
\( m\left( \frac{U}{c} \right)^{n} \alpha \)
- \( U \) :
-
\( c\frac{d\varepsilon }{dt} \)
- \( p_{e} \) :
-
\( \frac{{\rho \,C_{p} \,C\,U}}{k} \)
- \( \overline{D} \) :
-
\( D\sin \theta \frac{2n + 1}{n} \)
- \( \overline{E} \) :
-
\( \frac{E}{D}\left( {\frac{2n + 1}{n}} \right)^{n} \sin^{n} \theta \)
- \( \overline{\gamma } \) :
-
\( \frac{\beta }{\rho Cp\,\alpha } \)
- \( \overline{R} \) :
-
\( \frac{R}{C} \)
- \( \overline{h} \) :
-
\( \frac{h}{C} \)
- \( B \) :
-
\( \left( {\frac{2n + 1}{2n}} \right)^{n} \sin^{n} \theta \)
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© 2014 Springer India
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Prasad, D., Panda, S.S., Subrahmanyam, S.V. (2014). Power Law Fluid Film Lubrication of Journal Bearing with Squeezing and Temperature Effects. In: Patel, H., Deheri, G., Patel, H., Mehta, S. (eds) Proceedings of International Conference on Advances in Tribology and Engineering Systems. Lecture Notes in Mechanical Engineering. Springer, New Delhi. https://doi.org/10.1007/978-81-322-1656-8_6
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DOI: https://doi.org/10.1007/978-81-322-1656-8_6
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