Pressure and Temperature Field Measurements of a Lightly Loaded Circumferential Groove Journal Bearing

Cristea, Alex-Florian; Bouyer, J.; Fillon, Michel; Pascovici, M. D.

doi:10.1080/10402004.2011.604758

Cited by 18 publications

(13 citation statements)

References 20 publications

(14 reference statements)

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“…The difference in the pressure and temperature might be due to the high number of holes for the pressure and temperature sensors of the bushing. Yet another reason may be the lack of simulation methods in the groove: physically, the temperature field in the groove is dependent on the oil flow (speed and mass flow rate) in the groove and the pressure field is not constant in the groove [20]. The present TEHD simulation tool is not capable of taking into account these phenomena: the pressure is supposed to be constant in the simulation tool and the oil temperature in the groove depends only on the temperature of the bushing and shaft temperature.…”

Section: Journal Bearing Geometrymentioning

confidence: 99%

“…In 2011, Cristea [20,21] published several experiments of a central groove journal bearing at equilibrium state. His test rig consisted of a rotating shaft of 80 mm diameter, with a 61 µm radial clearance at room temperature (22 • C).…”

Section: Comparison To Cristea's Testmentioning

confidence: 99%

“…The temperature measurements were done at every 10 • , at 5 different axial sections (at 1, 7, 13, 19 and 26.5 mm from the end of the land). Unlike in [20], Cristea measured the oil flow rate and the resistant torque during his experiments in [21].…”

Section: Journal Bearing Geometrymentioning

confidence: 99%

“…Cristea's journal bearing had a steel shaft and a bronze bushing with an external diameter of 200 mm. The oil inlet temperature was constant, at 30 • C during the experiments of Cristea [20] and 40 • C for [21] (see Table 3). Table 3.…”

Section: Comparison To Cristea's Testmentioning

confidence: 99%

“…Table 3. Journal bearing and oil supply properties of the experiments of Cristea [20,21]. 1 Oil supply temperature for [21].…”

Section: Comparison To Cristea's Testmentioning

confidence: 99%

See 4 more Smart Citations

Experimental and Numerical Analysis on the Seizure of a Carbon-Filled PTFE Central Groove Journal Bearing during Start-Up Period

et al. 2018

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During the start-up period, if the journals bearing bushing and shaft materials have different heat conductivities, the thermal expansion of the shaft might be more rapid than that of the bushing. This reduces the radial clearance between the bearing components and generates higher shear stresses in the lubricating fluid, which can lead to bearing seizure, resulting in the deterioration of the journal bearing.(1) First, we present an experimental case study of the seizure of a central groove journal bearing with a carbon-filled polytetrafluoroethylene (PTFE) bushing and a steel shaft; (2) Then, a static thermoelastohydrodynamic (TEHD) simulation is compared to Cristea's experiments (Cristea, A.-F., 2012); (3) Then, a pseudo-transient TEHD simulation is performed in order to numerically predict the observed phenomena on the test rig; (4) Finally, the evolution of the oil flow rate and the bushing temperatures during the start-up period determined with the pseudo-transient TEHD modelling are compared to the experimental data of the test rig. The pressure field is determined with the thermohydrodynamic (THD) Elrod's modelling, with Vijayaraghvan's robust solver algorithm. The pseudo-transient temperature field in the bearing components as well as the thermal and mechanical deformations are calculated with a commercial software.

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Section: Journal Bearing Geometrymentioning

confidence: 99%

Section: Comparison To Cristea's Testmentioning

confidence: 99%

Section: Journal Bearing Geometrymentioning

confidence: 99%

Section: Comparison To Cristea's Testmentioning

confidence: 99%

“…Table 3. Journal bearing and oil supply properties of the experiments of Cristea [20,21]. 1 Oil supply temperature for [21].…”

Section: Comparison To Cristea's Testmentioning

confidence: 99%