laminar flow


Also found in: Dictionary, Thesaurus, Financial, Encyclopedia, Wikipedia.
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.

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.
References in periodicals archive ?
In the first step of manufacturing of the laminar flow type incubator the plexiglas cover was removed.
Saha, "Laminar flow and heat transfer through a circular tube having integral transverse corrugations and fitted with centre-cleared twisted-tape," Experimental Thermal and Fluid Science, vol.
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).
Homotopy Analysis Solutions for the Asymmetric Laminar Flow in a Porous Channel with Expanding or Contracting Walls.
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.
As a result, this paper introduces this ratio relationship as laminar flow ratio.
The increased resistance will be seen down into the smaller airways until the inherent laminar flow effect from the multitude of parallel airways, takes effect.
In this scenario, laminar flow diffusers behave quite predictably, producing characteristic laminar flow.
Laminar flow is amenable to analytical solution but for transition and turbulent flows, empirical equations must be used.
Such reduction might be possible if the dolphin were able to maintain laminar flow as opposed to the turbulent flow that would be expected to occur at dolphin-swimming speeds.
The Series 305 horizontal laminar flow clean bench features a stainless steel table top with a white painted-steel shell, front access, and interior lighting.
The critical point comes where air changes from flowing smoothly across a surface (laminar flow) to when it becomes chaotic (turbulent flow).