A novel method for estimation of unsteady flow rate using pressure at two or three points along a pipeline is described in this paper. The pressure data are processed using a wave propagation model to determine the unsteady flow. The comparison and analysis of two-transducer and three-transducer techniques are investigated through simulation. The proposed method is shown to be effective for unsteady flow rate measurement over a high bandwidth. However, if the pressure values from two transducers are used, inaccuracies exist at certain frequencies when the transducer spacing coincides with multiples of half a wavelength. The accuracy can be improved by adding a third transducer with unequal spacing. The three-transducer method has been implemented in experiments and has been found to be robust and reliable.
|Number of pages||8|
|Journal||Journal of Fluids Engineering: Transactions of the ASME|
|Early online date||24 Jan 2014|
|Publication status||Published - 1 Mar 2014|
- laminar flow
- pipe flow
- wave propagation
- unsteady flow rate measurement
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Person: Research & Teaching, Core staff
- Department of Mechanical Engineering - Reader
- Institute for Mathematical Innovation (IMI)
- Centre for Digital, Manufacturing & Design (dMaDe)
- EPSRC Centre for Doctoral Training in Advanced Automotive Propulsion Systems (AAPS CDT)
Person: Research & Teaching, Core staff, Affiliate staff