laminar flow


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Related to laminar flow: transitional flow, laminar blood flow

flow

 [flo]
1. the movement of a liquid or gas.
2. the amount of a fluid that passes through an organ or part in a specified time; called also flow rate.
forced expiratory flow (FEF) the rate of airflow recorded in measurements of forced vital capacity, usually calculated as an average flow over a given portion of the expiratory curve; the portion between 25 and 75 per cent of forced vital capacity is called the maximal midexpiratory flow. Called also forced expiratory flow rate.
laminar flow smooth, uninterrupted flow as of a gas through a tube.
maximal expiratory flow FEF200–1200; the rate of airflow at forced vital capacity, represented graphically as the slope of the line connecting the points 200 mL and 1200 mL on the forced expiratory volume curve. See also pulmonary function tests. Called also maximal expiratory flow rate.
maximal midexpiratory flow FEF25–75; the maximum rate of airflow measured between expired volumes of 25 and 75 per cent of the vital capacity during a forced expiration; represented graphically as the slope of the line connecting the points on the forced expiratory volume curve at 25 and 75 per cent of the forced vital capacity. See also pulmonary function tests. Called also maximal midexpiratory flow rate.
renal plasma flow (RPF) the amount of plasma that perfuses the kidneys per unit time, approximately 90 per cent of the total constitutes the effective renal plasma flow, the portion that perfuses functional renal tissue such as the glomeruli.
turbulent flow flow that is agitated or haphazard.

lam·i·nar flow

the relative motion of elements of a fluid along smooth parallel paths, which occurs at lower values of a Reynolds number.

laminar flow

lam·i·nar flow

(lam'i-năr flō)
The relative motion of elements of a fluid along smooth parallel paths, which occurs at lower values of a Reynolds number.

laminar

made up of laminae or layers; pertaining to a lamina.

laminar bone
see laminar bone.
laminar cortical necrosis
necrosis of the superficial layers of the cerebral cortex. See also polioencephalomalacia.
laminar dermis
the sensitive laminae in the horse's hoof; interdigitate with the insensitive laminae on the inner aspect of the horn of the hoof.
laminar flow
the flow of liquid through a tube so that the fluid passes along in concentric layers which slide over each other.
References in periodicals archive ?
In the first step of manufacturing of the laminar flow type incubator the plexiglas cover was removed.
As the wing approaches its critical angle of attack, the point where laminar flow separates from turbulent flow moves forward along with the center of pressure (the focal point of lift).
At a constant flow velocity of each curve, there exists a solid fraction region in which the pressure drop presents a common trend of valley to peak, meaning that the flow behavior returns to a laminar flow from turbulence with the increasing of solid mass fraction X.
The authors developed an extensive spreadsheet to calculate laminar flow ratios of several runner cross-sections, including those discussed in this article.
45 m/s) to determine if the laminar flow concept could be made to work practically.
Similarly, derivation of the flow rate for a given pressure drop, normally used for design purposes, although gives a direct solution for laminar flow, it still requires iteration because the type of flow, laminar, turbulent or transition, is not known a priori and is known only after computing the pressure drop which gives the wall shear stress, [[tau].
The Roman Arch[TM] Laminar Flow Nozzle--one of Roman Fountains most innovative products, produces a perfect glass-like arc of water that is finally an affordable option in laminar flow for the residential and commercial market.
Company offers two basic static mixer designs for use in turbulent and laminar flow mixing applications.
An analysis report commissioned by the United States Department of Energy states, "A system treated with Frigaid will experience increased volumetric efficiency, reduced laminar flow, quieter operation, compressor seal protection, increased resistance to oxidation, a 1500% increase in lubricating ability, reduced run time, extended equipment life and energy savings averaging 21.
of floor space, the unit's open flow-through design of the central star-wheel significantly lowers particle counts to well under GMP standards when used with laminar flow, and is rated for use in Class 100 clean rooms.
Baer-Riedhart began working with NASA in 1974 and has since worked on the F-18 High Angle-of-attack Research Vehicle program, the Optical Air Data System project, the Joined Wing Research Aircraft, the F-14 Variable Sweep Transition flight experiment, the JetStar Laminar Flow Control program, the F-15 Highly Integrated Digital Electronic Control program and the F-11 Transonic Aircraft Technology program.