| lossConstant_D_zetaReturn the loss constant 8*zeta/(pi^2*D^4) |  | 
| D | Type: Diameter (m) Description: Diameter at port_a or port_b | 
|---|---|
| zeta | Type: Real Description: Constant pressure loss factor with respect to D (i.e., either port_a or port_b) | 
| k | Type: Real Description: Loss constant (= 8*zeta/(pi^2*D^4)) | 
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