Fluid mechanical property measurement method and measurement device
AssigneeThe Foundation for the Promotion of Industrial Science
InventorsKeiji Sakai, Tomoki Ishiwata
Life of this patent
Estimating the term…
Abstract
An object is to measure a mechanical property of a fluid at a temporal resolution of at least 100 [μs]. Therefore, a method comprising: causing a droplet 21 to fly by ejecting a fluid to be measured from a nozzle 11a as the droplet 21; generating an electric field in a space around a flight path 22 of the droplet 21 by applying a voltage to an electrode arranged in the vicinity of the flight path 22; deforming the droplet 21 in a way of contactless deformation with a dielectric force induced by the electric field; and measuring a mechanical property of the fluid based on temporal variation of deformation state of the droplet 21 after deforming the droplet 21.
Claims10
A fluid mechanical property measurement method, the method comprising:
- causing a droplet to fly by ejecting a fluid to be measured from a nozzle as the droplet;
- generating an electric field in a space around a flight path of the droplet by applying a voltage to an electrode arranged in the vicinity of the flight path;
- deforming the droplet in a way of contactless deformation with a dielectric force induced by the electric field;
- and
- measuring a mechanical property of the fluid based on temporal variation of deformation state of the droplet after deforming the droplet.
A fluid mechanical property measurement device, the device comprising:
- a droplet creation device causing a droplet to fly by ejecting a fluid to be measured from a nozzle as the droplet;
- an electrode disposed in the vicinity of flight path of the droplet;
- a voltage application device applying a voltage to the electrode;
- and
- a droplet observation device observing the droplet, wherein:
- the voltage application device applies the voltage to the electrode so as to generate an electric field in a space around the flight path, a dielectric force induced by the electric field acts on the droplet in a way of contactless deforming the droplet;
- and
- a mechanical property of the fluid is measured based on temporal variation of deformation state of the droplet observed by the droplet observation device after deforming the droplet.
Dependencies are inferred from the claim text.