Review Article

Predicting and Preventing Flow Accelerated Corrosion in Nuclear Power Plant

Table 1

Possible important parameters and some measurement techniques.

ParameterSome measuring techniquesReferences

The velocity ().(i) Calculated from flow rate and flow area
(ii) Ultrasonic sensors
(iii) Pitot tube
[11, 17, 18].

Reynolds number (Re).Calculated from velocity, diameter of tube, and kinematic viscosity[11, 17, 18].

Mass transfer coefficient ().
Requirements:
 (1) Use of realistic geometries
 (2) Measurement of both smooth and rough surfaces
 (3) Use in two-phase flow
(i) Dissolution of sparingly soluble solid
(ii) Limiting current
(iii) Analogy with heat transfer
(iv) Computational
[12, 1923].

The surface shear stress ().
 Requirements as for
(i) On isolated surface element using force transducer
(ii) Pressure drop
(iii) Various types of heat transfer sensors
(iv) Limiting current density on isolated small electrode, but not for separated flows
(v) Computational
[12, 1820, 24, 25].

Intensity of turbulence (TI).
 Requirements as for
(i) Analysis of fluctuations in limiting current density on isolated small electrode.
(ii) Hot wire
(iii) Laser-Doppler anemometer
[11, 1820].

Freak energy density (FED).
 Requirements as for
Complex analysis of fluctuations in limiting current density on isolated small electrode, single author use. [2628].