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Table 2 Overview of modified parameters and variation range for hydraulic optimization
Parameters | Unit | Reference case(st.) | Range/variation | Abbreviations |
|---|---|---|---|---|
\({r}_{{i}}\) | [m] | – | [0.01:0.99] | |
\({\text{SDR}}\) | \([-]\) | 11 | 6 7.4 9 11 13.6 | |
17 21 26 33 41 | ||||
flow type | \([-]\) | Turbulent | Laminar | |
Turbulent rough regime | ||||
\({Re}\) | \([-]\) | 10000 | 1000 | \(Re_{c,\text{lam}}\) |
4000 | \(Re_{c,\min}\) | |||
100000 | \(Re_{c,\max}\) | |||
\({L}\) | [m] | 20 | 5 | \(L_{\min}\) |
100 | \(L_{\max}\) | |||
\({r_a}\) | [m] | 75 | 39 | \(r_{a,\min}\) |
240 | \(r_{a,\max}\) | |||
\({k}\) | \([-]\) | Plastic/steel | Steel/plastic | \(k_{\text{switch}}\) |
Steel/steel | \(k_{\text{steel}}\) | |||
(Inner pipe/outer pipe) | Plastic/plastic | \(k_{\text{plast}}\) |