Non-adiabatic pressure loss boundary condition for modelling turbocharger turbine pulsating flow

M. S. Chiong, S. Rajoo, A. Romagnoli, A. W. Costall, R. F. Martinez-Botas

Research output: Contribution to journalArticlepeer-review

24 Citations (SciVal)


This paper presents a simplified methodology of pulse flow turbine modelling, as an alternative over the meanline integrated methodology outlined in previous work, in order to make its application to engine cycle simulation codes much more straight forward. This is enabled through the development of a bespoke non-adiabatic pressure loss boundary to represent the turbine rotor. In this paper, turbocharger turbine pulse flow performance predictions are presented along with a comparison of computation duration against the previously established integrated meanline method. Plots of prediction deviation indicate that the mass flow rate and actual power predictions from both methods are highly comparable and are reasonably close to experimental data. However, the new boundary condition required significantly lower computational time and rotor geometrical inputs. In addition, the pressure wave propagation in this simplified unsteady turbine model at different pulse frequencies has also been found to be in agreement with data from the literature, thereby supporting the confidence in its ability to simulate the wave action encountered in turbine pulse flow operation.

Original languageEnglish
Pages (from-to)267-281
Number of pages15
JournalEnergy Conversion and Management
Publication statusPublished - 15 Mar 2015


  • Modelling
  • Non-adiabatic pressure loss
  • One-dimensional
  • Turbine
  • Turbocharger
  • Unsteady flow

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology


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