Rheology

Rheology and flow behaviour

Viscosity is a measure of flow resistance. Rheology refer to the determination of the flow behaviour of a fluid under gravity or under a given force, e.g. injection of thermoset resin into tiny channels in rock for sealing purpose.


Viscosity can be monitored by cappilary viscometers, rotational viscometer or with a rheometer.


Rheometers are very convenient since it is possible to measure the viscosity from very low (0.001/s) to very high shear rates (1000/s) which gives the viscosity function in one single measurement.


The viscosity function can be used in a simulation model to predict the flow behaviour e.g. the pressure drop during flow in tubings, the pump pressure requried to achieve a certain flow rate among others.

Services

Prediction of curing behaviour of thermoset

Hydration of concrete and degree of hydration

Simulation of temperature and conversion profiles in thick walled structures during curing/hydration

Keywords

Newtonian flow

Non-Newtonian flow

Viscosity

Viscosity function

Pseudo-plastic flow behaviour

Thixotropy

Shear stress

Thixotropic fillers

Rheometer

Viscometer