THE EFFECT OF JOURNAL VIBRATION ON THE HYDRODYNAMIC PRESSURE PROFILE IN A PLAIN JOURNAL BEARING

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HOSSEINI MOHAMMAD; ABYAR HOSSEIN

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:5 Page(s): 348-356

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Title

THE EFFECT OF JOURNAL VIBRATION ON THE HYDRODYNAMIC PRESSURE PROFILE IN A PLAIN JOURNAL BEARING

Author(s)

HOSSEINI MOHAMMAD | ABYAR HOSSEIN | Issue Writer Certificate

Keywords

JOURNAL BEARINGQ2

REDUCED FREQUENCYQ1

VIBRATIONQ2

HYDRODYNAMICS PRESSURE PROFILEQ1

Abstract

In many cases, journal VIBRATIONs in the radial direction have been observed in the various rotating machinery using JOURNAL BEARING. In this investigation the effects of forced oscillation of a journal on the hydrodynamic pressure profile of a two dimensional plain JOURNAL BEARING are evaluated. Gambit and ANSYS- Fluent software are used to produce mesh and simulate the flow field respectively. Fluid is Newtonian and viscosity is constant. Also, flow is laminar, isothermal, and heat transfer is neglected. It is assumed that there is no phase change and cavitation does not exist. A user defined function is written in C language and compiled by Fluent to apply the oscillation motion to the journal. Results are obtained for three non-dimensional VIBRATION frequencies of journal (0.001, 0.1 and 1), and two eccentricity ratios (0.54 and 0.8). Results show that the hydrodynamic pressure profile is significantly dependent on the oscillation frequency of journal. It can be observed that the pressure distribution variations are independent of frequency when oscillation frequency is low. However, the pressure distribution is considerably affected by increasing oscillation frequency which leads to appearance of different hydrodynamic pressure distribution. These influences become more and more intense by rising non-dimensional VIBRATION frequency ratios, especially when it is 1.

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APA: Copy

HOSSEINI, MOHAMMAD, & ABYAR, HOSSEIN. (2016). THE EFFECT OF JOURNAL VIBRATION ON THE HYDRODYNAMIC PRESSURE PROFILE IN A PLAIN JOURNAL BEARING. MODARES MECHANICAL ENGINEERING, 16(5), 348-356. SID. https://sid.ir/paper/177943/en

Vancouver: Copy

HOSSEINI MOHAMMAD, ABYAR HOSSEIN. THE EFFECT OF JOURNAL VIBRATION ON THE HYDRODYNAMIC PRESSURE PROFILE IN A PLAIN JOURNAL BEARING. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(5):348-356. Available from: https://sid.ir/paper/177943/en

IEEE: Copy

MOHAMMAD HOSSEINI, and HOSSEIN ABYAR, “THE EFFECT OF JOURNAL VIBRATION ON THE HYDRODYNAMIC PRESSURE PROFILE IN A PLAIN JOURNAL BEARING,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 5, pp. 348–356, 2016, [Online]. Available: https://sid.ir/paper/177943/en

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