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A numerical study of pressure distribution and flow through rigid short-tube orifices.

Author(s) : BASSIOUNY R., O'NEAL D. L.

Summary

A finite element model was used to estimate the pressure distribution inside a short-tube orifice and mass flow for single-phase flow of R22 and R134a. The results for the numerical model were compared to published experimental data. The study included three different length-to-diameter ratios and upstream pressures ranging from 1.45 to 1.72 MPa for R22 and from 0.9 to 1.17 MPa for R134a. Downstream pressures ranged from 1 to 1.36 for R22 and from 0.6 to 0.86 MPa for R134a. A constant subcooling of 13.9 °C was used for all cases.

Details

  • Original title: A numerical study of pressure distribution and flow through rigid short-tube orifices.
  • Record ID : 2003-0077
  • Languages: English
  • Source: ASHRAE Transactions. 2002 Winter Meeting, Atlantic City, New Jersey. Volume 108, part 1 + CD-ROM.
  • Publication date: 2002
  • Document available for consultation in the library of the IIR headquarters only.

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