Prediction of the entropy production and pressure losses in two-phase flow from the mixing length theory
The case of vertical two-phase flow is examined under the light of the mixing-length theory which was succesfully applied to turbulent flows. The purpose of the analysis is to obtain the pressure distribution along the geothermal wells. The well is modeled as a vertical pipe carrying a fluid of variable density; the density distribution is described by two parameters. The conservation equations are written in boundary layer coordinates and the pressure losses are computed through the entropy production function. The two-phase friction factor is defined and calculated and through this the pressure distribution of the geothermal well is obtained. Finally a comparison is made of the results emanating from this model to other theoretical predictions and known experimental data.
- Research Organization:
- Brown Univ., Providence, RI (USA). Div. of Engineering
- DOE Contract Number:
- AC02-79ET27225
- OSTI ID:
- 5414700
- Report Number(s):
- DOE/ET/27225-5
- Country of Publication:
- United States
- Language:
- English
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