ice accretion

ice accretion

[′īs ə‚krē·shən]
(hydrology)
The process by which a layer of ice builds up on solid objects which are exposed to freezing precipitation or to supercooled fog or cloud droplets.
References in periodicals archive ?
Ice accretion and subsequent ice shedding into engine cores during flight can adversely affect engine performance and damage engine components.
The software uses information about the airflow surrounding the body of interest to calculate trajectories of approaching water droplets, the mass and energy transfer processes at the surface of the body, and the resulting ice accretion shape.
the acceptable offeror will demonstrate: international achievements in icing research including but not limited to the norwegian confines of the botnia-atlantica region, posses cold wind-tunnel facilities (including flow visualization capabilities) to be used for experimental verification of models, experience in developing new ice accretion and icing parameter instruments for outdoor use, including observation networks, mastery of computational fluid dynamic methods for modeling the icing characteristics of outdoor (especially statnett).
Ice buildup may be within tolerance for a time, but it only takes a few short minutes for ice accretion to become extreme and urgent.
In view of the serious threats that ice accretion would impose on flight safety, ice protection methods must be applied to prevent or control the ice accretion.
The results of the measured peaks of ice accretion on the grid (black points) and the calculated impingement height (500 [micro]m to 800 [micro]m droplets; gray line) are shown in Figure 25.
[18] carried out a wind tunnel test to investigate the influence of the initial ice accretion angle on the aerodynamic characteristics of D-shape 2-bundled and 6-bundled conductors.
Bank angle plus ice accretion would have given the airplane a higher stall speed.
Contributions come from a variety of organizations including NASA, Boeing Aircraft, and Pennsylvania State University, and address aspects of the issue such as fluid dynamics, observational technology, hydrophobic coatings, interaction of meteorological conditions with wing shapes, and a variety of ice accretion test methods.
Conductor galloping represents a classical motion instability mechanism in the steady flow over a noncircular cross section caused by ice accretion on the conductor.
Currently there are two main approaches to deal with the ice accretion problem.