laminar flow

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Related to Poiseuille flow: plane Poiseuille flow, Couette 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 ?
Keywords: red blood cell, Poiseuille flow, immersed boundary method, lattice Boltzmann method, elasticity modulus.
Couette and Poiseuille flows," Journal of Fluid Mechanics, vol.
The simulation was carried out for a simple Poiseuille flow formed in a tube with a confined throat.
(i) We consider the question why Poiseuille flow is stable by using the shear stress [mu](du/dr).
P., 1981, A critical study of Poiseuille flow of couple stress fluid with applications to blood flow, Biorheology, 18, pp.
9b), [chi] = 1 for the Darcy flow, and [chi] = 2 for the Poiseuille flow.
Numerically integrating the derivative of the fitting function, [dr.sub.p]/dz, as indicated above using a pressure profile, P(z), derived from the Poiseuille flow equation gives an increase in the effective area:
Streamlines in Poiseuille flow are all straight and parallel to the walls (which prevents turbulent mixing), and streamlines near the walls move much more slowly (reaching zero velocity at the wall) than those passing through the channel's middle.
Chan, "Analytical modeling of rarefied Poiseuille flow in microchannels," Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, vol.
Further, the IB-LBM has been applied to quantitative analyses of the motion and deformation of the RBC membrane in a Poiseuille flow and its compression during passage through a stenotic microvessel, with a focus on the cell-cell interaction strength [2,3,29].