FLUID BULK MODULUS: COMPARISON OF LOW PRESSURE MODELS

Authors

  • Hossein Gholizadeh Department of Mechanical Engineering, University of Saskatchewan 57 Campus Drive, Saskatoon, Saskatchewan, Canada, S7N 5A9
  • Richard Burton Department of Mechanical Engineering, University of Saskatchewan 57 Campus Drive, Saskatoon, Saskatchewan, Canada, S7N 5A9
  • Greg Schoenau Department of Mechanical Engineering, University of Saskatchewan 57 Campus Drive, Saskatoon, Saskatchewan, Canada, S7N 5A9

Keywords:

fluid bulk modulus models, hydraulic fluid, air/gas dissolving, adiabatic, isothermal, volumetric fraction of air/gas, critical pressure

Abstract

Fluid bulk modulus is a fluid property that has been studied extensively over the past. The numerical value of this property depends on the operating conditions, the amount of entrained air/gas, and the way compression is applied and to some extent, the mathematical form it is defined. In a companion paper, an extensive review of fluid bulk modulus was presented. From this review, it was established that many models for fluid bulk modulus in the low pressure range (below critical pressure) have been forwarded. However, many of these models are based on assumptions that have not been explicitly defined. This paper considers these models and attempts to quantify the underlying assumptions. In addition some modification to these models are proposed in order to compare their prediction in the case where air/gas in entrained, for example. The paper concludes by categorizing the models into two groups and recommending the best model that can be used for each group. Finally some problems which observed in the models are discussed and future work for solving these problems presented.

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Author Biographies

Hossein Gholizadeh, Department of Mechanical Engineering, University of Saskatchewan 57 Campus Drive, Saskatoon, Saskatchewan, Canada, S7N 5A9

Hossein Gholizadeh Ph.D. Candidate in the Mechanical Engineering Department, University of Saskatchewan, Canada. He Received his M.Sc. from Iran University of Science and Technology in Tehran, Iran in 2003. His main research interest is in fluid power transmission and control. His current research is focused on fluid bulk modulus and methods of on-line measuring of effective bulk modulus

Richard Burton, Department of Mechanical Engineering, University of Saskatchewan 57 Campus Drive, Saskatoon, Saskatchewan, Canada, S7N 5A9

Richard Burton P.Eng, Ph.D, FASME, Burton is a Professor of Mechanical Engineering, University of Saskatchewan He is involved in research pertaining to the application of intelligent theories to control and monitoring of hydraulics systems, component design, and system analysis. He is a Fellow of ASME, a member of the executive of ASME, FPST Division, and an active member of FPNI. He is a reviewer for most Journals that contain fluid power topics.

Greg Schoenau, Department of Mechanical Engineering, University of Saskatchewan 57 Campus Drive, Saskatoon, Saskatchewan, Canada, S7N 5A9

Greg Schoenau Professor of Mechanical Engineering at the University of Saskatchewan. He was head of that Department from 1993 to 1999. He obtained B.Sc. and M. Sc. Degrees from the University of Saskatchewan in mechanical engineering in 1967 and 1969, respectively. In 1974 he obtained his Ph.D. from the University of New Hampshire in fluid power control systems. He continues to be active in research in this area and in the thermal systems area as well. He has also held positions in numerous outside engineering and technical organizations.

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Published

2013-03-01

How to Cite

Gholizadeh, H., Burton, R., & Schoenau, G. (2013). FLUID BULK MODULUS: COMPARISON OF LOW PRESSURE MODELS. International Journal of Fluid Power, 13(1), 7–16. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/693

Issue

2012: Vol 13 Iss 1

Section

Original Article