Evaluation Analysis of Prediction Methods for Two-Phase Flow Pressure Drop in Mini-Channels

Abstract

2092 data of two-phase flow pressure drop were collected from 18 published papers of which the working fluids include R123, R134a, R22, R236ea, R245fa, R404a, R407C, R410a, R507, CO2, water and air. The hydraulic diameter ranges from 0.506 to 12mm; Relo from 10 to 37000, and Rego from 3 to 4×105. 11 correlations and models for calculating the two-phase frictional pressure drop were evaluated based upon these data. The results show that the accuracy of the Lockhart-Martinelli method, Mishima and Hibiki correlation, Zhang and Mishima correlation and Lee and Mudawar correalion in the laminar region is very close to each other, while the Muller-Steinhagen and Heck correlation is the best among the evaluated correlations in the turbulent region. A modified Chisholm correlation was proposed, which is better than all of the evaluated correlations in the turbulent region and its mean relative error is about 29%. For refrigerants only, the new correlation and Muller-Steinhagen and Heck correlation are very close to each other and give better agreement than the other evaluated correlations.

Resistance characteristics of air–water two-phase flow in a rolling 3×3 rod bundle

“…Based on the separated flow model, studies of Sun and Mishima [13] and Wang et al [14] indicated that the index value n of Martinelli parameter X in Chisholm correlation [15] is not 1, as shown in Eq. (11).…”

An experimental study of two-phase pressure drop of acetone in triangular silicon micro-channels

“…A C C E P T E D ACCEPTED MANUSCRIPT 7 Lee and Garimella [8] paid a great attention on the channel size effect, and applied regression analysis to obtain a new correlation of pressure drop for saturated boiling of water. Phan et al [9] observed that the total two-phase pressure drop of water significantly increases with static contact angle.…”

“…Sun and Mishima [7] collected 2092 data from 18 published papers using 12 kinds of working fluids, evaluated 11 correlations and models for calculating the two-phase frictional pressure drop, and also proposed a modified…”

A two-phase, two-component model for vertical upward gas–liquid annular flow

“…A very large databank for pressure drop has been built in the literature. Apart from experiments, various forms of two-phase multiplier have been proposed to predict the pressure loss, as summarized by Sun and Mishima (2009). In this method, the pressure drop correlation of single phase flow is required to be provided first, and many of them are semi-experimental based.…”

“…Many researchers have investigated the pressure gradient of annular flow in different diameter tubes through experimental methods, such as Cioncolini et al (2009), Shannak (2008, and Sun and Mishima (2009). A very large databank for pressure drop has been built in the literature.…”