버전 1.0.0(26.3 KB) 작성자:Punit This app calculates and classifies the flow for simple pipe flow geometry. The user must enter the fluid and flow properties. 팔로우 0.0 (0) 다운로드 수: 317 업데이트 날짜:2020/4/7 ...
A Reynolds equation governing the steady flow of a fluid through a curvilinear, narrow tube, with its derivation from Navier–Stokes equations through asymptotic methods is presented. The channel considered may have a rather large curvature and torsion. Approximations of the velocity and the pressure...
based on studies of Osborn Reynolds, is a dimensionless number comprised of the physical characteristics of the flow. Equation 1 is used to calculate theReynolds number(NR) for fluid flow.
Reynolds Number Equation The Reynolds Number is the ratio of the inertial and viscous forces of a fluid's flow: $$Re = \frac{inertial force}{viscous force} $$ The expressions for the two terms simplify into a ratio that provides the Reynolds number formula: $$Re = \frac{\rho vd}{\...
TheColebrook-White equationis used to calculate the friction factor for turbulent flow. The friction factor is then used in the Darcy-Weisbach formula to calculate the fluid frictional loss in a pipe.
This new turbulence model was able to capture well the drag reduction of various viscoelastic fluids over a wide range of Reynolds numbers and performed better than previously developed models for the same type of constitutive equation, even if the streamwise and wall-normal turbulence intensities ...
The principle that the type of fluid motion, that is, laminar flow or turbulent flow, in geometrically similar flow systems depends only on the Reynolds number; for example, in a pipe, laminar flow exists at Reynolds numbers less than 2000, turbulent flow at numbers above about 3000.McGraw...
The analysis is extended to examine the response of k/t, the unsteady rate-of-change term of the k-transport equation. A Reynolds stress transport model (RSTM) of turbulence is compared with data for steady and periodic pipe flows and, in most cases, satisfactory agreement is demonstrated. ...
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2.Three-Dimensional Numerical Simulations of the Viscous Flow Past a Large Diameter Cylinder of the Spar Platform under Supercritical Reynolds Number超临界雷诺数下Spar平台大直径柱体绕流的三维数值模拟 3.Numerical solution of Reynolds' equation for ultra-thin gas film lubrication at the head/disk interfa...