CANARINA:   DESCAR: Algorithms IV · software · environmental consulting                                     2.1 Water is stratified   2.1.1 Multiport diffuser.- We have three different cases:  Case I:  θ >=65º   F<=0.1 ó θ <65º   F<=0.36 θ=angle between Ua vector and diffuser. F=Fraude number F=Ua3 (g’q)-1 q=Unitary flor rate in the diffuser q=QLt-1 (m2/s) Q=Discharge flow rate (m3/s) Lt=Diffuser length (m) S=initial dilution In such a case, we have the next relationships   S=0.27 Ua H q-1 F-1/3 e=0.29H B=SQ/eUa   Case II:    25o=<θ <65º  F>0,36 (*)   In such a case, we have the next relationships   S=0.38 Ua H q-1 B=max[Ltsin θ; 0.93Lt F-1/3] e=SQ/BUa   Case III:    θ <25º  0,3620   In such a case, we have the next relationships   S=0.139 Ua H q-1 B=max[Ltsin θ; 0.93Lt F-1/3] e=SQ/BUa   Case V:    θ >65º  F>0,1   In such a case, we have the next relationships   S=0.58 Ua H q-1 B=max[Ltsin θ; 0,93Lt F-1/3] e=SQ/BUa   From Case II to Case V, and if e>H, we take e=H and S= UaBH/Q.   2.1.2 Separated ports.- We will solve this case by means of a iterative mathematical method   B=max[Ltsin θ; 0,93Lt F-1/3] S=0.089 g’1/3 (H-e)5/3 Qb-2/3   (***) e=SQ/BUa   Qb= flow rate at each single port(m3/s).   The number of iterations can modify by means of the parameter N_it of the function Calculation parameters of the program. Increasing N_it value, we increase the numeric convergence but we will need more time of calculation. We should look for an optimized value of N_it.   Single port.- In such a case, we have the next relationships     e=0.15H S=0.089 g’1/3 (H-e)5/3 Q-2/3 B=SQ/eUa (*)   However, at high velocity values and if B<=0.3H, the approximation is not correct .                (air)           (noise)              (electrosmog)         environmental consulting                                                                                 Canarina Environmental Software Software for environmental consulting firms Canary Islands, Spain  e-mail: contact        European Union · network on Pollution Member of MAPO: European network on Marine Pollution.                        english:           castellano:        italiano:           français:      português:     deutsch:         APLICACIONES castellano: DIS CUS DES  RAD   english: DIS CUS   RAD     deutsch: DIS CUS  DES  RAD   português: DIS CUS DES RAD     italiano:   DIS CUS  DES RAD français:  DIS CUS DES RAD