Community Research and Development Information Service - CORDIS


This report reviews previous work to investigate the effect of upstream edge sharpness on the discharge coefficient of orifice plates. It traces the development of standard requirements for edge sharpness and discusses the need for more guidance in the manufacture and inspection of orifice plates. The NEL project to provide new experimental data on the effect of edge sharpness and other defects is described in detail. The main results indicate that the present criteria for edge sharpness are realistic but the rejection of large orifice plates for very slight visible imperfections is perhaps unnecessarily stringent.

Additional information

Authors: HOBBS J M, National Engineering Laboratory, Glasgow (GB);HUMPHREYS J S, National Engineering Laboratory, Glasgow (GB);DUDDY E, National Engineering Laboratory, Glasgow (GB);MAXWELL D, National Engineering Laboratory, Glasgow (GB)
Bibliographic Reference: EUR 13762 EN (1991) 92 pp., MF, ECU 4
Availability: (2)
Record Number: 199111075 / Last updated on: 1994-12-02
Original language: en
Available languages: en