The results of statistical analysis for the estimation of two-phase flow pressure loss coefficient
| Method . | SE% . | bias . | R2 . |
|---|---|---|---|
| ANN | 36.49 | 0.174 | 0.873 |
| ANN-APSO | 23.71 | 0.118 | 0.919 |
| ANFIS | 14.73 | 0.084 | 0.943 |
| ANFIS-APSO | 8.45 | 0.034 | 0.989 |
| Equation (14) | 10.12 | 0.063 | 0.961 |
| Kabiri-Samani & Borghei (2010) | 17.56 | –0.113 | 0.947 |
| Zhang et al. (2010) | 18.22 | 0.211 | 0.931 |
| Lee & Lee (2001) | 21.14 | –0.317 | 0.725 |
| Mishima & Hibiki (1996) | 29.71 | –5.236 | 0.629 |
| Muller & Heck (1986) | 35.43 | –11.76 | 0.324 |
| Lockhart & Martinelli (1949) | 48.96 | –23.77 | 0.261 |
| Method . | SE% . | bias . | R2 . |
|---|---|---|---|
| ANN | 36.49 | 0.174 | 0.873 |
| ANN-APSO | 23.71 | 0.118 | 0.919 |
| ANFIS | 14.73 | 0.084 | 0.943 |
| ANFIS-APSO | 8.45 | 0.034 | 0.989 |
| Equation (14) | 10.12 | 0.063 | 0.961 |
| Kabiri-Samani & Borghei (2010) | 17.56 | –0.113 | 0.947 |
| Zhang et al. (2010) | 18.22 | 0.211 | 0.931 |
| Lee & Lee (2001) | 21.14 | –0.317 | 0.725 |
| Mishima & Hibiki (1996) | 29.71 | –5.236 | 0.629 |
| Muller & Heck (1986) | 35.43 | –11.76 | 0.324 |
| Lockhart & Martinelli (1949) | 48.96 | –23.77 | 0.261 |