Hydraulic machines, radial and axial – Methodology for performance transposition from model to prototype

IEC 62097:2019 establishes the prototype hydraulic machine efficiency from model test results, with consideration of scale effect including the effect of surface roughness.

This document is intended to be used for the assessment of the results of contractual model tests of hydraulic machines.

This second edition cancels and replaces the first edition published in 2009. This edition constitutes an editorial and technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

a) In introduction, clarifications have been brought such as addition of a sentence which declares the precedence of IEC 62097 over IEC 60193 if any mismatch is found between them

b) In Clauses 3 and 4, corrections of the typographical errors

c) In Clause 3: changes to be in accordance with presentation of the terms and structure of IEC 60193 (except for the water temperature)

d) In Clause 4:

–？ Deletion of the clause providing the direct step-up procedures for a whole turbine

–？ Introduction of a global view by using turbine A and turbine B instead of model turbine, reference model turbine and prototype turbine

–？ Move of section dealing with