where L, D2 and A2 are length, diam

where L, D2 and A2 are length, diameter and cross-sectional area of
penstock, respectively. In addition, f is friction factor, Pk12 is the
sum of local losses in penstock due to entrance, bends, penstock
fittings and gates, AN is nozzle area at its exit (section 3 in Fig. 1) and
kN is nozzle head loss coefficient, which is given by (e.g., [1]).

ผลลัพธ์ (แอฟริกา) 1:

waar L, D2 en A2 is lengte, deursnee en deursnee-area van
valdeur, onderskeidelik. Daarbenewens F is wrywingsfaktor, Pk12 is die
bedrag van plaaslike verliese in valdeur Weens ingang, draaie, valdeur
Fittings en ​​Gates, an mondstuk Area op sy uitgang (artikel 3 in Fig. 1) en
kN is mondstuk kop verloor koëffisiënt. wat gegee word deur (bv, [1]).