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THMT-12. Proceedings of the Seventh International Symposium On Turbulence Heat and Mass Transfer
September, 24-27, 2012, Palermo, Italy

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal


ISBN Print: 978-1-56700-302-4

ISSN: 2377-2816

Towards Development of a Transfer Function between Flow Rate and Pressure Gradient for Turbulent Pulsating Pipe Flow

pages 1762-1769
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1800
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Краткое описание

The present study has been carried out in the context of the development of a measurement method for turbulent, fully-developed, low-amplitude, time-periodic pipe flows. Earlier investigations for laminar flow have shown that this method allows the reconstruction of the instantaneous flow rate from a recorded pressure gradient history by utilizing the knowledge of the frequency-dependent relationship between the mass flow rate and the pressure gradient. In order to facilitate the implementation of the measurement technique into a flow meter for turbulent pulsating pipe flows, the main objective of the present research effort is to approximate the aforementioned relationship with a simple, yet very general, mathematical expression in the form of a typical transfer function. In this paper, two correlations are proposed; one such expression has been theoretically derived, based on the assumption of quasi-steady flow, while using data from the numerical simulations for turbulent sinusoidally-pulsating pipe flows, a second expression has been also proposed.

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